From b14a48aba1ff8451523650abffeb0b6826af0e67 Mon Sep 17 00:00:00 2001 From: Claude Date: Tue, 18 Nov 2025 06:43:29 +0000 Subject: [PATCH 1/4] chore: prepare repository for crates.io publication This commit prepares the repository for publication to crates.io by: - Removing development documentation (PROGRESS.md, PROJECT_COMPLETION_PLAN.md, NEXT_STEPS.md, REVIEW_SUMMARY.md, PHASE6_PLAN.md, START_PHASE3.md, CONVERSION_PLAN.md) - Removing empty nested sorting module in modules/searching/modules/ - Adding version specifications to all internal dependencies in Cargo.toml files - Fixing clippy warnings: - Changed module-level doc comments from ///! to //! - Added #[derive(Debug)] to GraphGenerator and DigraphGenerator - Updated is_multiple_of usage in graph_generator.rs - Removed unused import in top_m.rs - Added missing module documentation in advanced/lib.rs All tests pass (986 tests), clippy reports no warnings, formatting is correct, documentation builds successfully, and release build completes without errors. The repository is now ready for publication to crates.io. --- CONVERSION_PLAN.md | 1483 ----------------- NEXT_STEPS.md | 426 ----- PHASE6_PLAN.md | 480 ------ PROGRESS.md | 788 --------- PROJECT_COMPLETION_PLAN.md | 523 ------ REVIEW_SUMMARY.md | 340 ---- START_PHASE3.md | 434 ----- modules/advanced/Cargo.toml | 6 +- modules/advanced/src/allow_filter.rs | 10 +- modules/advanced/src/block_filter.rs | 10 +- modules/advanced/src/lib.rs | 3 + modules/advanced/src/top_m.rs | 11 +- modules/fundamentals/src/util/transaction.rs | 8 +- modules/geometry/Cargo.toml | 2 +- modules/graphs/src/digraph_generator.rs | 1 + modules/graphs/src/graph_generator.rs | 3 +- modules/graphs/src/symbol_digraph.rs | 8 +- modules/graphs/src/symbol_graph.rs | 8 +- modules/searching/Cargo.toml | 2 +- modules/searching/modules/sorting/src/lib.rs | 0 modules/sorting/Cargo.toml | 2 +- modules/strings/Cargo.toml | 4 +- .../src/substring/longest_common_substring.rs | 8 +- .../substring/longest_repeated_substring.rs | 8 +- 24 files changed, 49 insertions(+), 4519 deletions(-) delete mode 100644 CONVERSION_PLAN.md delete mode 100644 NEXT_STEPS.md delete mode 100644 PHASE6_PLAN.md delete mode 100644 PROGRESS.md delete mode 100644 PROJECT_COMPLETION_PLAN.md delete mode 100644 REVIEW_SUMMARY.md delete mode 100644 START_PHASE3.md delete mode 100644 modules/searching/modules/sorting/src/lib.rs diff --git a/CONVERSION_PLAN.md b/CONVERSION_PLAN.md deleted file mode 100644 index 8ec931f..0000000 --- a/CONVERSION_PLAN.md +++ /dev/null @@ -1,1483 +0,0 @@ -# algs4-rust: Java to Rust Conversion Plan - -## Project Overview - -This project converts the Java implementation from [kevin-wayne/algs4](https://github.com/kevin-wayne/algs4) (Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne) to idiomatic Rust. - -**Source Repository:** https://github.com/kevin-wayne/algs4 -**Target Repository:** algs4-rust -**Total Files in Original:** ~201 Java source files -**Core Files to Convert:** ~160 files (41 skipped or optional) -**License:** GPLv3 (inherited from source) - -## Design Philosophy - -Following the original design principles while adapting to Rust idioms: -- **Clarity:** Code should be easy to read and understand -- **Portability:** Standard Rust with minimal dependencies -- **Efficiency:** Leverage Rust's zero-cost abstractions and memory safety -- **Safety:** Use Rust's type system to prevent common errors -- **Idiomatic:** Follow Rust best practices (ownership, borrowing, traits) - -## Project Structure - -``` -algs4-rust/ -├── Cargo.toml # Main workspace configuration -├── .gitignore # Ignore Cargo artifacts -├── README.md # Project documentation -├── CONVERSION_PLAN.md # This file -├── PROGRESS.md # Detailed progress tracking -├── API_GUIDE.md # API design and usage examples -├── LICENSE # GPLv3 license -├── .claude/ # Claude Code context -│ ├── commands/ # Custom slash commands -│ └── context/ # Additional context files -├── modules/ # Main algorithm modules (workspace members) -│ ├── fundamentals/ # Basic data structures -│ ├── sorting/ # Sorting algorithms -│ ├── searching/ # Search algorithms -│ ├── graphs/ # Graph algorithms -│ ├── strings/ # String processing -│ ├── geometry/ # Geometric algorithms -│ └── advanced/ # Advanced topics -├── examples/ # Example programs (converted from Java clients) -├── tests/ # Integration tests -│ └── data/ # Test data files (.txt from original repo) -└── benches/ # Performance benchmarks -``` - -## Key Decisions Made - -### 1. API Structure -**Decision:** Modular with optional unified re-export crate - -```rust -// Users can import from individual modules -use algs4_fundamentals::{Stack, Queue}; -use algs4_sorting::quick_sort; - -// Or (future) use unified crate that re-exports everything -use algs4::prelude::*; -``` - -**Rationale:** Allows users to include only what they need, reducing compile times. - -### 2. String Algorithm Strategy -**Decision:** Hybrid approach based on algorithm requirements - -- **UTF-8 aware algorithms** (search, pattern matching): Use `&str` and `String` -- **Byte-level algorithms** (compression, low-level): Use `&[u8]` and `Vec` -- **Character-indexed algorithms** (suffix arrays): Use `Vec` when needed - -**Rationale:** Respects Rust's UTF-8 strings while supporting byte-level operations where needed. - -### 3. Test Data Files -**Decision:** Include in repository with `include_str!` macro - -```rust -const TEST_DATA: &str = include_str!("../tests/data/tinyG.txt"); -``` - -**Location:** `tests/data/` directory with original .txt files from algs4 repo - -### 4. Client Programs (Java main() methods) -**Decision:** Convert to both examples and integration tests - -- **Examples** (`examples/`): Interactive demonstrations -- **Integration tests** (`tests/`): Automated correctness verification -- **Doc tests**: Simple usage in documentation - -**Rationale:** Provides both learning resources and test coverage. - -### 5. Multimedia & Visualization -**Decision:** Phase 11 (optional) with feature flags - -```toml -[features] -default = [] -graphics = ["plotters"] -audio = ["rodio"] -image = ["image"] -``` - -**Rationale:** Core algorithms don't need multimedia; power users can opt-in. - -### 6. Error Handling Philosophy -**Decision:** -- `Result` for I/O and file operations -- `Option` for search operations (found/not found) -- `panic!` only for contract violations (e.g., invalid indices with debug assertions) - -### 7. Performance vs Clarity -**Decision:** Clarity first, then optimize with benchmarks - -- Initial implementations prioritize readability -- Add `#[inline]` and optimizations after correctness verified -- Document any deviations from textbook for performance -- Benchmark against std library and Java - ---- - -## Files to Skip - -The following files from the original repository will **not** be converted: - -### Testing/Benchmarking Utilities (use Cargo alternatives) -- `DoublingTest` - Use `cargo bench` instead -- `DoublingRatio` - Use `criterion` benchmarks -- `RandomSeq` - Can be done with `rand` crate directly - -### System Utilities (use standard tools) -- `Cat` - Use shell `cat` command -- `BinaryDump` - Use `hexdump` or `xxd` -- `HexDump` - Use `hexdump` or `xxd` -- `PictureDump` - Not applicable without Picture - -### Multimedia (moved to optional Phase 11) -- `Picture`, `StdPicture`, `GrayscalePicture` (25 files total - see Phase 11) -- `StdDraw`, `Draw`, `DrawListener` -- `StdAudio`, `StdAudioStereo` - -### Java-Specific or Redundant -- Multiple "X" variants where one Rust implementation suffices -- Some test clients (consolidate into integration tests) - -**Total Skipped:** ~41 files -**Core Conversion Target:** ~160 files - ---- - -## Conversion Phases - -The work is divided into **11 phases** (Phase 0-10, plus optional Phase 11) to manage complexity and context windows. - ---- - -### **Phase 0: Project Foundation** ✅ COMPLETED -**Estimated Effort:** 1 session -**Status:** DONE - 2025-11-13 - -**Deliverables:** -- [x] Project structure setup -- [x] Cargo workspace configuration -- [x] .gitignore and basic files -- [x] Claude context files -- [x] Conversion plan document -- [x] Initial README -- [x] CI/CD setup - -**Files Created:** -- `Cargo.toml` (workspace) -- `.gitignore` -- `README.md` -- `CONVERSION_PLAN.md` -- `.claude/` context files -- `LICENSE` -- GitHub Actions CI/CD - ---- - -### **Phase 1: Core I/O & Basic Types** -**Estimated Effort:** 2 sessions -**Priority:** HIGH (Required by all other modules) -**Module:** `modules/fundamentals/` - -**Java Files to Convert (8 files):** -1. `StdIn` - Standard input utilities -2. `StdOut` - Standard output utilities (formatted printing) -3. `In` - File and URL input -4. `Out` - File output -5. `StdRandom` - Random number generation -6. `Stopwatch` - Elapsed time measurement -7. `Counter` - Simple counter with name -8. `Accumulator` - Running statistics (mean, variance) - -**Files to Skip:** -- `BinaryIn`, `BinaryOut`, `BinaryStdIn`, `BinaryStdOut` (Phase 1B if needed) -- `StdArrayIO` (not commonly used) -- `DoublingTest`, `DoublingRatio` (use `cargo bench`) - -**Key Challenges:** -- Standard input/output handling in Rust (`std::io`) -- Random number generation (`rand` crate) -- Timer utilities (`std::time::Instant`) -- Making I/O convenient like Java's utilities - -**Dependencies:** -- `rand = "0.8"` - Random number generation - -**Rust Adaptations:** -```rust -// StdIn equivalent -pub fn read_int() -> io::Result { ... } -pub fn read_line() -> io::Result { ... } - -// StdRandom equivalent -pub fn uniform_int(a: i32, b: i32) -> i32 { ... } -pub fn shuffle(arr: &mut [T]) { ... } - -// Stopwatch -pub struct Stopwatch { start: Instant } -impl Stopwatch { - pub fn elapsed(&self) -> f64 { ... } -} -``` - -**Testing:** -- Unit tests for each utility -- Doc tests showing usage -- Example programs reading/writing data - ---- - -### **Phase 2: Collections & Union-Find** -**Estimated Effort:** 3 sessions -**Priority:** HIGH (Foundation for other data structures) -**Module:** `modules/fundamentals/` - -**Java Files to Convert (16 files):** - -**Collections (12 files):** -1. `Bag` - Multiset (unordered collection) -2. `LinkedBag` - Linked-list implementation -3. `ResizingArrayBag` - Array-based implementation -4. `Queue` - FIFO queue -5. `LinkedQueue` - Linked-list queue -6. `ResizingArrayQueue` - Circular array queue -7. `Stack` - LIFO stack -8. `LinkedStack` - Linked-list stack -9. `ResizingArrayStack` - Array-based stack -10. `SET` - Ordered set -11. `ST` - Ordered symbol table -12. `Knuth` - Knuth shuffle - -**Union-Find (4 files):** ⭐ MOVED FROM PHASE 9 -13. `UF` - Union-Find interface -14. `QuickFindUF` - Quick-find implementation -15. `QuickUnionUF` - Quick-union implementation -16. `WeightedQuickUnionUF` - Weighted with path compression - -**Key Challenges:** -- Generic type parameters and trait bounds -- Iterator implementation for all collections -- Memory-safe linked structures (`Box` and `Option>>`) -- Resizing array implementation -- Union-Find with path compression - -**Rust Adaptations:** -```rust -// Stack example -pub struct Stack { - first: Option>>, - size: usize, -} - -impl Stack { - pub fn push(&mut self, item: T) { ... } - pub fn pop(&mut self) -> Option { ... } -} - -impl Iterator for StackIter { ... } - -// Union-Find -pub struct WeightedQuickUnionUF { - parent: Vec, - size: Vec, - count: usize, -} - -impl WeightedQuickUnionUF { - pub fn union(&mut self, p: usize, q: usize) { ... } - pub fn find(&mut self, p: usize) -> usize { ... } -} -``` - -**Why Union-Find is in Phase 2:** -- Needed for Kruskal's MST algorithm (Phase 7A) -- Fundamental data structure, not geometric -- Simple enough to implement early -- No dependencies on other structures - -**Testing:** -- Unit tests for each collection -- Iterator tests -- Union-Find correctness tests -- Property tests (e.g., union-find maintains equivalence) - ---- - -### **Phase 3: Sorting Algorithms** -**Estimated Effort:** 2-3 sessions -**Priority:** MEDIUM -**Module:** `modules/sorting/` - -**Java Files to Convert (18 files):** -1. `Selection` - Selection sort -2. `Insertion` - Insertion sort -3. `InsertionX` - Insertion with sentinel -4. `BinaryInsertion` - Binary insertion sort -5. `Shell` - Shellsort -6. `Merge` - Top-down mergesort -7. `MergeBU` - Bottom-up mergesort -8. `MergeX` - Optimized mergesort -9. `Quick` - Quicksort -10. `Quick3way` - 3-way quicksort -11. `QuickX` - Optimized quicksort -12. `QuickBentleyMcIlroy` - Bentley-McIlroy 3-way -13. `Heap` - Heapsort -14. `LSD` - LSD radix sort -15. `MSD` - MSD radix sort -16. `InplaceMSD` - In-place MSD -17. `Quick3string` - 3-way string quicksort -18. `Inversions` - Count inversions - -**Files to Skip:** -- `AmericanFlag`, `AmericanFlagX` (complex, rarely used) - -**Key Challenges:** -- Generic comparison functions (use `Ord` trait) -- In-place sorting with slices -- String-specific optimizations -- Performance benchmarking - -**Rust Adaptations:** -```rust -// Generic sorting functions -pub fn selection_sort(arr: &mut [T]) { ... } -pub fn merge_sort(arr: &mut [T]) { ... } -pub fn quick_sort(arr: &mut [T]) { ... } - -// String sorting -pub fn lsd_sort(arr: &mut [String], w: usize) { ... } -pub fn msd_sort(arr: &mut [String]) { ... } -``` - -**Testing:** -- Correctness: sorted output, stable sorts preserve order -- Property tests: output is permutation of input -- Benchmark against `slice::sort()` and `slice::sort_unstable()` -- Test edge cases: empty, single element, all equal, reverse sorted - ---- - -### **Phase 4: Priority Queues** -**Estimated Effort:** 2-3 sessions -**Priority:** MEDIUM-HIGH -**Module:** `modules/fundamentals/` - -**Java Files to Convert (10 files):** -1. `MaxPQ` - Maximum priority queue (binary heap) -2. `MinPQ` - Minimum priority queue -3. `IndexMaxPQ` - Index-based max PQ -4. `IndexMinPQ` - Index-based min PQ -5. `BinomialMinPQ` - Binomial heap -6. `FibonacciMinPQ` - Fibonacci heap -7. `IndexBinomialMinPQ` - Indexed binomial heap -8. `IndexFibonacciMinPQ` - Indexed Fibonacci heap -9. `MultiwayMinPQ` - Multiway heap -10. `IndexMultiwayMinPQ` - Indexed multiway heap - -**Key Challenges:** -- Heap implementation with generics -- Index-based operations (map external keys to heap positions) -- Advanced heap structures (binomial, Fibonacci) -- Efficient decrease-key operations -- Complex pointer manipulation in safe Rust - -**Rust Adaptations:** -```rust -// Basic priority queue -pub struct MaxPQ { - pq: Vec>, - n: usize, -} - -impl MaxPQ { - pub fn insert(&mut self, item: T) { ... } - pub fn del_max(&mut self) -> Option { ... } -} - -// Indexed priority queue -pub struct IndexMinPQ { - pq: Vec, // heap of indices - qp: Vec, // inverse: qp[i] = position of i in pq - keys: Vec>, -} - -impl IndexMinPQ { - pub fn insert(&mut self, i: usize, key: T) { ... } - pub fn decrease_key(&mut self, i: usize, key: T) { ... } -} -``` - -**Note:** Advanced heaps (Fibonacci, Binomial) are complex. May take extra time. - -**Testing:** -- Heap property maintained after operations -- Correct ordering of extracted elements -- Index-based operations work correctly -- Benchmark against `std::collections::BinaryHeap` - ---- - -### **Phase 5: Searching & Symbol Tables** -**Estimated Effort:** 3-4 sessions -**Priority:** HIGH -**Module:** `modules/searching/` - -**Java Files to Convert (20 files):** - -**Search Algorithms (2):** -1. `BinarySearch` - Binary search in sorted array -2. `BinarySearchST` - Binary search symbol table - -**Trees (4):** -3. `SequentialSearchST` - Unordered linked list -4. `BST` - Binary search tree -5. `RedBlackBST` - Red-black BST -6. `AVLTreeST` - AVL tree -7. `BTree` - B-tree - -**Hash Tables (2):** -8. `SeparateChainingHashST` - Separate chaining -9. `LinearProbingHashST` - Linear probing - -**Tries (4):** -10. `TrieSET` - R-way trie set -11. `TrieST` - R-way trie symbol table -12. `PatriciaSET` - Patricia trie set -13. `PatriciaST` - Patricia trie symbol table - -**Applications (8):** -14. `FrequencyCounter` - Count word frequencies -15. `DeDup` - Remove duplicates -16. `Count` - Count occurrences -17. `FileIndex` - File indexing -18. `LookupCSV` - CSV lookup -19. `LookupIndex` - Index lookup -20. `KWIK` - Keyword in context (moved from strings) - -**Key Challenges:** -- Self-balancing tree implementations (Red-Black especially complex) -- Hash function design (use Rust's `Hash` trait) -- Trie implementation with ownership -- Generic key-value storage with trait bounds - -**Rust Adaptations:** -```rust -// Symbol table trait -pub trait SymbolTable { - fn put(&mut self, key: K, value: V); - fn get(&self, key: &K) -> Option<&V>; - fn delete(&mut self, key: &K); - fn size(&self) -> usize; -} - -// BST implementation -pub struct BST { - root: Option>>, -} - -// Red-Black BST (complex!) -pub struct RedBlackBST { - root: Option>>, -} - -enum Color { Red, Black } - -struct RBNode { - key: K, - val: V, - left: Option>>, - right: Option>>, - color: Color, - size: usize, -} -``` - -**Testing:** -- BST property maintained -- Red-black tree invariants -- Hash table load factor and resizing -- Trie correctness -- Application programs work correctly - ---- - -### **Phase 6: Graph Fundamentals** -**Estimated Effort:** 3 sessions -**Priority:** HIGH -**Module:** `modules/graphs/` - -**Java Files to Convert (18 files):** - -**Graph Structures (4):** -1. `Graph` - Undirected graph -2. `Digraph` - Directed graph -3. `EdgeWeightedGraph` - Weighted undirected graph -4. `EdgeWeightedDigraph` - Weighted directed graph - -**Special Graphs (3):** -5. `AdjMatrixEdgeWeightedDigraph` - Adjacency matrix representation -6. `SymbolGraph` - String-vertex mapping -7. `SymbolDigraph` - Directed symbol graph - -**Generators (2):** -8. `GraphGenerator` - Random graph generation -9. `DigraphGenerator` - Random digraph generation - -**Undirected Traversal (3):** -10. `DepthFirstSearch` - DFS -11. `DepthFirstPaths` - DFS paths -12. `BreadthFirstPaths` - BFS paths - -**Directed Traversal (5):** -13. `DepthFirstDirectedPaths` - Directed DFS paths -14. `BreadthFirstDirectedPaths` - Directed BFS paths -15. `NonrecursiveDFS` - Iterative DFS -16. `NonrecursiveDirectedDFS` - Directed iterative DFS -17. `DirectedDFS` - Reachability - -**Components (1):** -18. `CC` - Connected components (undirected) - -**Key Challenges:** -- Graph representation (adjacency list) -- Edge and vertex types -- Iterator patterns for graph traversal -- Memory-efficient structures -- Avoiding excessive cloning - -**Rust Adaptations:** -```rust -// Basic graph -pub struct Graph { - v: usize, // number of vertices - e: usize, // number of edges - adj: Vec>, // adjacency lists -} - -impl Graph { - pub fn add_edge(&mut self, v: usize, w: usize) { ... } - pub fn adj(&self, v: usize) -> &[usize] { ... } -} - -// Weighted edge -#[derive(Clone, Copy)] -pub struct Edge { - v: usize, - w: usize, - weight: f64, -} - -// Directed edge -#[derive(Clone, Copy)] -pub struct DirectedEdge { - from: usize, - to: usize, - weight: f64, -} - -// Graph traits -pub trait GraphTrait { - fn v(&self) -> usize; - fn e(&self) -> usize; - fn add_edge(&mut self, v: usize, w: usize); - fn adj(&self, v: usize) -> Box + '_>; -} -``` - -**Testing:** -- Graph construction correctness -- Traversal visits all reachable vertices -- Path reconstruction -- Connected components -- Test with standard graph files (tinyG.txt, etc.) - ---- - -### **Phase 7A: Shortest Paths & MST** -**Estimated Effort:** 3-4 sessions -**Priority:** HIGH -**Module:** `modules/graphs/` - -**Java Files to Convert (12 files):** - -**Shortest Paths (8):** -1. `DijkstraSP` - Dijkstra's algorithm -2. `DijkstraUndirectedSP` - Dijkstra for undirected graphs -3. `DijkstraAllPairsSP` - All-pairs Dijkstra -4. `BellmanFordSP` - Bellman-Ford (handles negative weights) -5. `AcyclicSP` - Shortest paths in DAG -6. `AcyclicLP` - Longest paths in DAG -7. `FloydWarshall` - Floyd-Warshall all-pairs -8. `TransitiveClosure` - Transitive closure - -**Minimum Spanning Trees (4):** -9. `LazyPrimMST` - Lazy Prim's algorithm -10. `PrimMST` - Eager Prim's algorithm -11. `KruskalMST` - Kruskal's algorithm ⭐ **Uses Union-Find from Phase 2** -12. `BoruvkaMST` - Boruvka's algorithm - -**Key Challenges:** -- Shortest path with different edge weights (positive, negative, DAG) -- Priority queue usage for Dijkstra and Prim -- Union-Find for Kruskal -- Path reconstruction -- Handling negative cycles - -**Dependencies:** -- Priority queues from Phase 4 -- Union-Find from Phase 2 -- Graph structures from Phase 6 - -**Rust Adaptations:** -```rust -// Dijkstra's algorithm -pub struct DijkstraSP { - dist_to: Vec, - edge_to: Vec>, -} - -impl DijkstraSP { - pub fn new(g: &EdgeWeightedDigraph, s: usize) -> Self { ... } - pub fn dist_to(&self, v: usize) -> f64 { ... } - pub fn path_to(&self, v: usize) -> Option> { ... } -} - -// Kruskal's MST -pub struct KruskalMST { - mst: Vec, - weight: f64, -} - -impl KruskalMST { - pub fn new(g: &EdgeWeightedGraph) -> Self { - let mut edges: Vec = g.edges().collect(); - edges.sort_by(|a, b| a.weight.partial_cmp(&b.weight).unwrap()); - - let mut uf = WeightedQuickUnionUF::new(g.v()); - // ... Kruskal's algorithm - } -} -``` - -**Testing:** -- Shortest path distances match expected values -- MST weight is correct -- Handles negative weights (Bellman-Ford) -- Detects negative cycles -- Test with standard graph files (tinyEWG.txt, etc.) - ---- - -### **Phase 7B: Flow & Advanced Graph Analysis** -**Estimated Effort:** 3-4 sessions -**Priority:** MEDIUM -**Module:** `modules/graphs/` - -**Java Files to Convert (18 files):** - -**Cycles (8):** -1. `Cycle` - Cycle detection (undirected) -2. `DirectedCycle` - Cycle detection (directed) -3. `DirectedCycleX` - Nonrecursive cycle detection -4. `EdgeWeightedDirectedCycle` - Weighted directed cycle -5. `EulerianCycle` - Eulerian cycle (undirected) -6. `EulerianPath` - Eulerian path (undirected) -7. `DirectedEulerianCycle` - Directed Eulerian cycle -8. `DirectedEulerianPath` - Directed Eulerian path - -**Topological & Ordering (2):** -9. `Topological` - Topological sort -10. `DepthFirstOrder` - DFS preorder/postorder/reverse postorder - -**Strongly Connected Components (3):** -11. `KosarajuSharirSCC` - Kosaraju-Sharir algorithm -12. `TarjanSCC` - Tarjan's algorithm -13. `GabowSCC` - Gabow's algorithm - -**Bipartite (2):** -14. `Bipartite` - Bipartite detection -15. `BipartiteX` - Nonrecursive bipartite - -**Maximum Flow (2):** -16. `FlowEdge` - Flow edge data type -17. `FlowNetwork` - Flow network -18. `FordFulkerson` - Ford-Fulkerson algorithm - -**Files moved to Phase 7C:** -- `BipartiteMatching`, `HopcroftKarp` (can be Phase 7C if needed) -- `GlobalMincut` (part of flow) -- `CPM`, `DegreesOfSeparation`, `Arbitrage`, `AssignmentProblem` (applications) - -**Key Challenges:** -- Cycle detection in various graph types -- Topological ordering -- SCC algorithms (complex) -- Bipartite matching -- Maximum flow implementation -- Residual graph handling - -**Rust Adaptations:** -```rust -// Topological sort -pub struct Topological { - order: Option>, -} - -impl Topological { - pub fn new(g: &Digraph) -> Self { - let cycle = DirectedCycle::new(g); - if !cycle.has_cycle() { - let dfo = DepthFirstOrder::new(g); - Self { order: Some(dfo.reverse_post()) } - } else { - Self { order: None } - } - } -} - -// Flow edge -pub struct FlowEdge { - v: usize, - w: usize, - capacity: f64, - flow: f64, -} - -impl FlowEdge { - pub fn residual_capacity_to(&self, vertex: usize) -> f64 { ... } - pub fn add_residual_flow_to(&mut self, vertex: usize, delta: f64) { ... } -} - -// Ford-Fulkerson -pub struct FordFulkerson { - value: f64, - marked: Vec, -} -``` - -**Testing:** -- Cycle detection correctness -- Topological order is valid -- SCC correctness -- Bipartite detection -- Max flow value matches expected -- Min-cut correctness - ---- - -### **Phase 7C: Graph Applications** (Optional Extension) -**Estimated Effort:** 2 sessions -**Priority:** LOW -**Module:** `modules/graphs/` - -**Java Files to Convert (6 files):** -1. `BipartiteMatching` - Bipartite matching -2. `HopcroftKarp` - Hopcroft-Karp algorithm -3. `GlobalMincut` - Global minimum cut -4. `AssignmentProblem` - Assignment problem -5. `CPM` - Critical path method -6. `DegreesOfSeparation` - Degrees of separation -7. `Arbitrage` - Arbitrage detection - -**Note:** These are application programs that can be done later or as examples. - ---- - -### **Phase 8: String Processing** -**Estimated Effort:** 3 sessions -**Priority:** MEDIUM -**Module:** `modules/strings/` - -**Java Files to Convert (17 files):** - -**Pattern Matching (3):** -1. `KMP` - Knuth-Morris-Pratt -2. `BoyerMoore` - Boyer-Moore -3. `RabinKarp` - Rabin-Karp - -**Regular Expressions (2):** -4. `NFA` - Nondeterministic finite automaton -5. `GREP` - Pattern matching with NFA - -**Compression (3):** -6. `LZW` - LZW compression -7. `Huffman` - Huffman coding -8. `RunLength` - Run-length encoding - -**Suffix Structures (2):** -9. `SuffixArray` - Suffix array -10. `SuffixArrayX` - Optimized suffix array - -**String Utilities (2):** -11. `Alphabet` - Alphabet data type -12. `Genome` - Genome data type - -**Applications (5):** -13. `LongestCommonSubstring` - LCS -14. `LongestRepeatedSubstring` - LRS -15. `TopologicalX` - String topological sort (if not in Phase 7B) - -**Files Moved:** -- `KWIK` → Phase 5 (applications) - -**Key Challenges:** -- String pattern matching with Rust strings (UTF-8 vs bytes) -- Compression algorithms -- Suffix array implementation -- Regular expression engine -- Handling both text and binary data - -**Rust Adaptations:** -```rust -// Pattern matching (byte-level) -pub struct KMP { - pattern: Vec, - dfa: Vec>, -} - -impl KMP { - pub fn new(pattern: &[u8]) -> Self { ... } - pub fn search(&self, text: &[u8]) -> Option { ... } -} - -// Compression -pub fn compress(input: &[u8]) -> Vec { ... } -pub fn decompress(input: &[u8]) -> Vec { ... } - -// Suffix array -pub struct SuffixArray { - text: Vec, - index: Vec, -} - -impl SuffixArray { - pub fn lcp(&self, i: usize) -> usize { ... } - pub fn rank(&self, query: &[u8]) -> usize { ... } -} -``` - -**String Handling Decision:** -- UTF-8 strings: Use `&str` for text processing -- Byte-level: Use `&[u8]` for compression and low-level algorithms -- Document when to use each - -**Testing:** -- Pattern matching finds correct positions -- Compression/decompression roundtrip -- Suffix array LCP values correct -- Regex matching works -- Test with both ASCII and UTF-8 data - ---- - -### **Phase 9: Geometric Algorithms** -**Estimated Effort:** 2 sessions -**Priority:** LOW -**Module:** `modules/geometry/` - -**Java Files to Convert (9 files):** - -**Geometric Primitives (4):** -1. `Point2D` - 2D point -2. `RectHV` - Axis-aligned rectangle -3. `Interval1D` - 1D interval -4. `Interval2D` - 2D interval - -**Geometric Algorithms (3):** -5. `ClosestPair` - Closest pair of points -6. `FarthestPair` - Farthest pair of points -7. `GrahamScan` - Graham scan convex hull - -**Visualization (2):** -8. `Draw` - Basic drawing (optional, feature-gated) -9. `DrawListener` - Drawing events (optional) - -**Files Removed:** -- Union-Find moved to Phase 2 -- `StdDraw` moved to Phase 11 (multimedia) - -**Key Challenges:** -- Geometric data structures -- Floating-point precision -- Convex hull algorithm -- Visualization (optional feature) - -**Rust Adaptations:** -```rust -// Point -#[derive(Clone, Copy, Debug)] -pub struct Point2D { - x: f64, - y: f64, -} - -impl Point2D { - pub fn distance_to(&self, that: &Point2D) -> f64 { ... } - pub fn ccw(a: &Point2D, b: &Point2D, c: &Point2D) -> i32 { ... } -} - -// Convex hull -pub struct GrahamScan { - hull: Vec, -} - -impl GrahamScan { - pub fn new(points: &[Point2D]) -> Self { ... } - pub fn hull(&self) -> &[Point2D] { ... } -} -``` - -**Testing:** -- Geometric calculations correct -- Convex hull properties verified -- Edge cases: collinear points, all same point - ---- - -### **Phase 10: Advanced Core Algorithms** -**Estimated Effort:** 3 sessions -**Priority:** LOW -**Module:** `modules/advanced/` - -**Java Files to Convert (15 files):** - -**Linear Algebra (5):** -1. `Vector` - Vector operations -2. `SparseVector` - Sparse vector -3. `Complex` - Complex numbers (or use `num-complex` crate) -4. `Polynomial` - Polynomial -5. `FFT` - Fast Fourier Transform - -**Linear Programming & Linear Algebra (3):** -6. `GaussianElimination` - Gaussian elimination -7. `GaussJordanElimination` - Gauss-Jordan elimination -8. `LinearProgramming` - Simplex algorithm - -**Advanced Data Structures (2):** -9. `SegmentTree` - Segment tree -10. `FenwickTree` - Fenwick tree (Binary Indexed Tree) - -**Miscellaneous Algorithms (5):** -11. `ThreeSum` - 3-sum problem -12. `ThreeSumFast` - Optimized 3-sum -13. `AllowFilter` - Allow filter -14. `BlockFilter` - Block filter -15. `TopM` - Top M elements - -**Files Moved to Phase 11 (Multimedia):** -- `Picture`, `StdPicture`, `GrayscalePicture` -- `StdAudio`, `StdAudioStereo` -- `CollisionSystem`, `Particle` (physics simulation with graphics) -- `TwoPersonZeroSumGame` (game theory - could stay if no graphics) - -**Optional Dependencies:** -```toml -[dependencies] -num-complex = { version = "0.4", optional = true } - -[features] -complex = ["num-complex"] -``` - -**Key Challenges:** -- Numerical computing precision -- FFT implementation -- Simplex algorithm complexity -- Advanced data structures - -**Rust Adaptations:** -```rust -// FFT -pub fn fft(x: &mut [Complex]) { ... } -pub fn ifft(x: &mut [Complex]) { ... } - -// Segment tree -pub struct SegmentTree { - tree: Vec, - n: usize, -} - -impl SegmentTree { - pub fn query(&self, left: usize, right: usize) -> T { ... } - pub fn update(&mut self, index: usize, value: T) { ... } -} -``` - -**Testing:** -- Numerical algorithms within precision tolerance -- FFT correctness -- Segment tree range queries -- Linear programming solutions - ---- - -### **Phase 11: Multimedia & Visualization** (OPTIONAL) -**Estimated Effort:** 4+ sessions -**Priority:** OPTIONAL -**Module:** `modules/multimedia/` (new module) - -**Feature-Gated:** Users opt-in via Cargo features - -```toml -[features] -default = [] -graphics = ["plotters"] -audio = ["rodio"] -image = ["image"] -full-multimedia = ["graphics", "audio", "image"] -``` - -**Java Files to Convert (25+ files):** - -**Image Processing (3):** -- `Picture` - Image manipulation -- `StdPicture` - Standard picture I/O -- `GrayscalePicture` - Grayscale images - -**Graphics/Visualization (3):** -- `StdDraw` - 2D drawing -- `Draw` - Drawing canvas (if not in Phase 9) -- `DrawListener` - Event handling - -**Audio (2):** -- `StdAudio` - Audio playback -- `StdAudioStereo` - Stereo audio - -**Physics Simulation (2):** -- `CollisionSystem` - Particle collisions -- `Particle` - Particle physics - -**Game Theory (1):** -- `TwoPersonZeroSumGame` - Zero-sum games - -**Remaining Utilities (~14 files):** -- Binary I/O if not done: `BinaryIn`, `BinaryOut`, etc. -- `Date`, `Transaction` if not in Phase 1 -- Other miscellaneous utilities - -**Implementation Strategy:** -1. Use existing Rust crates as backends: - - `plotters` for 2D graphics - - `image` for picture processing - - `rodio` for audio playback -2. Provide thin wrapper API matching original where possible -3. Document differences from Java version -4. All multimedia is opt-in via features - -**Why Optional:** -- Not core algorithms -- Platform-dependent (audio/graphics) -- Heavy dependencies -- May not work in all environments -- Educational value lower than core algorithms - -**Testing:** -- Unit tests for API -- Visual tests (manual) -- Skip in CI if dependencies unavailable - ---- - -## Module Dependencies (Updated) - -``` -fundamentals (Phase 1-2) - - No dependencies - - Includes: I/O, collections, union-find, priority queues - ↓ -sorting (Phase 3) - - Depends on: fundamentals (for I/O, testing) - ↓ -searching (Phase 5) - - Depends on: fundamentals - ↓ -graphs (Phase 6, 7A, 7B, 7C) - - Depends on: fundamentals (priority queues, union-find) - - Depends on: searching (symbol tables for SymbolGraph) - ↓ -strings (Phase 8) - - Depends on: fundamentals - - Depends on: searching (tries) - ↓ -geometry (Phase 9) - - Depends on: fundamentals - ↓ -advanced (Phase 10) - - Depends on: fundamentals - - May depend on: graphs (for some applications) - ↓ -multimedia (Phase 11 - OPTIONAL) - - Depends on: fundamentals - - Optional external crates -``` - ---- - -## Conversion Guidelines - -### General Principles - -1. **Naming Conventions:** - - Java classes → Rust structs/modules - - `camelCase` → `snake_case` for functions and variables - - Keep algorithm names recognizable (e.g., `DijkstraSP` → `dijkstra_sp` module with `DijkstraSP` struct) - -2. **Type System:** - - `int` → `i32` or `usize` (for indices) - - `double` → `f64` - - `boolean` → `bool` - - `String` → `String` or `&str` - - Generic types: `` → `` - -3. **Memory Management:** - - No `null` → Use `Option` - - Linked structures → `Box` and `Option>>` - - Arrays → `Vec` or slices `&[T]`, `&mut [T]` - - References → `&T` (immutable) or `&mut T` (mutable) - -4. **Error Handling:** - - Exceptions → `Result` - - Implement custom error types where needed - - Use `?` operator for error propagation - -5. **Iterators:** - - Implement `Iterator` trait for collections - - Use iterator adapters: `map`, `filter`, `fold`, etc. - - Provide both consuming and borrowing iterators - -6. **Traits:** - - Common traits: `Debug`, `Clone`, `PartialEq`, `Eq`, `PartialOrd`, `Ord`, `Hash`, `Display` - - Custom traits for algorithms: `Graph`, `SymbolTable`, `PriorityQueue` - -7. **Testing:** - - Unit tests in same file: `#[cfg(test)] mod tests { ... }` - - Integration tests in `tests/` directory - - Doc tests in documentation comments - - Property-based testing (consider `proptest` crate) - -8. **Documentation:** - - Use `///` for documentation comments - - Include examples in doc comments - - Document time/space complexity - - Reference original textbook sections - -9. **Performance:** - - Use `#[inline]` for hot paths - - Benchmark critical algorithms - - Profile and optimize after correctness is verified - - Compare with standard library implementations - -10. **Dependencies:** - - Minimize external dependencies - - Prefer standard library when possible - - Document why each dependency is needed - ---- - -## Workspace Organization - -### Cargo Workspace Structure - -```toml -[workspace] -members = [ - "modules/fundamentals", - "modules/sorting", - "modules/searching", - "modules/graphs", - "modules/strings", - "modules/geometry", - "modules/advanced", - "modules/multimedia", # Optional -] -``` - ---- - -## Testing Strategy - -1. **Unit Tests:** - - Test each algorithm with small inputs - - Edge cases: empty, single element, duplicates - - Verify invariants and postconditions - -2. **Integration Tests:** - - Test algorithm combinations - - Use example data from textbook - - Compare outputs with known correct results - -3. **Property-Based Tests:** - - Sorting: output is sorted, permutation of input - - Search: find returns correct element or None - - Graph: paths are valid, MST properties hold - -4. **Performance Tests:** - - Benchmark against standard library - - Verify time complexity empirically - - Track performance regressions - -5. **Correctness:** - - Cross-reference with Java implementation - - Use textbook test cases (in `tests/data/`) - - Validate against algorithm specifications - ---- - -## Build Instructions - -### Prerequisites - -- Rust 1.70+ (stable) -- Cargo (comes with Rust) - -### Building - -```bash -# Clone repository -git clone -cd algs4-rust - -# Build all modules -cargo build --release - -# Build specific module -cargo build -p algs4-fundamentals - -# Run tests -cargo test --all - -# Run benchmarks -cargo bench --all - -# Generate documentation -cargo doc --open --no-deps - -# Build with multimedia features -cargo build --features full-multimedia -``` - -### Development - -```bash -# Check code -cargo check --all - -# Format code -cargo fmt --all - -# Lint code -cargo clippy --all -- -D warnings - -# Watch mode (requires cargo-watch) -cargo watch -x check -x test -``` - ---- - -## Quality Standards - -### Code Quality - -- **Formatting:** Use `rustfmt` with default settings -- **Linting:** Pass `clippy` with no warnings -- **Testing:** Minimum 80% code coverage -- **Documentation:** All public APIs documented -- **Safety:** No `unsafe` unless absolutely necessary (and well documented) - -### Git Workflow - -- **Commits:** One logical change per commit -- **Messages:** Descriptive commit messages -- **Branches:** Feature branches for each phase -- **Reviews:** All code should be reviewed (if working with team) - -### CI/CD - -Configured in `.github/workflows/ci.yml`: -- Automated testing on push -- Format and lint checks -- Documentation building -- Multiple Rust versions (stable, beta) - ---- - -## Timeline Estimates (Updated) - -| Phase | Description | Files | Estimated Time | -|-------|-------------|-------|----------------| -| 0 | Project Foundation | - | 1 day ✅ | -| 1 | Core I/O & Basic Types | 8 | 2 days | -| 2 | Collections & Union-Find | 16 | 3 days | -| 3 | Sorting Algorithms | 18 | 3 days | -| 4 | Priority Queues | 10 | 3 days | -| 5 | Searching & Symbol Tables | 20 | 4 days | -| 6 | Graph Fundamentals | 18 | 3 days | -| 7A | Shortest Paths & MST | 12 | 4 days | -| 7B | Flow & Advanced Graph | 18 | 4 days | -| 7C | Graph Applications (opt) | 6 | 2 days | -| 8 | String Processing | 17 | 3 days | -| 9 | Geometric Algorithms | 9 | 2 days | -| 10 | Advanced Core | 15 | 3 days | -| **Core Total** | **Phases 0-10** | **~160** | **37 days** | -| 11 | Multimedia (optional) | 25+ | 4+ days | -| **Complete Total** | **All Phases** | **185+** | **41+ days** | - -*Note: Times are estimates for focused work. Actual time may vary based on experience level and available time.* - ---- - -## Session Management - -### Starting a New Phase - -1. Read the relevant section of this plan -2. Review Java source files for the phase at https://github.com/kevin-wayne/algs4 -3. Create module structure if not exists -4. Implement, test, document -5. Commit regularly with clear messages: `git commit -m "Phase X: Implement Y"` -6. Update `PROGRESS.md` with completed files -7. Run `cargo test --all && cargo clippy --all` before finishing -8. Push when phase is complete - -### Continuing Work - -1. Review previous session's progress in `PROGRESS.md` -2. Check TODO comments in code -3. Run tests to ensure nothing broke -4. Continue with next component -5. Update this plan if scope changes - -### Phase Completion Checklist - -For each phase, ensure: - -- [ ] All planned files converted -- [ ] Unit tests written and passing -- [ ] Integration tests written and passing (where applicable) -- [ ] Documentation complete (doc comments + examples) -- [ ] Benchmarks implemented (where appropriate) -- [ ] Code formatted: `cargo fmt --all` -- [ ] Code linted: `cargo clippy --all -- -D warnings` -- [ ] CI passing -- [ ] `PROGRESS.md` updated -- [ ] Commit and push - ---- - -## Progress Tracking - -Create a `PROGRESS.md` file to track detailed progress: - -```markdown -# algs4-rust Progress Tracker - -## Phase 0: Project Foundation ✅ COMPLETE -- 2025-11-13: Initial setup - -## Phase 1: Core I/O & Basic Types (0/8) -- [ ] StdIn -- [ ] StdOut -- [ ] In -- [ ] Out -- [ ] StdRandom -- [ ] Stopwatch -- [ ] Counter -- [ ] Accumulator - -## Phase 2: Collections & Union-Find (0/16) -... -``` - ---- - -## Success Criteria - -The project will be considered successful when: - -1. ✅ All core algorithms (phases 1-10) are converted (~160 files) -2. ✅ Comprehensive test suite with >80% coverage -3. ✅ Documentation for all public APIs with examples -4. ✅ Performance benchmarks showing competitive performance -5. ✅ Example programs demonstrating usage -6. ✅ CI/CD pipeline passing -7. ✅ Published to crates.io (optional) -8. ✅ API guide document created - ---- - -## Resources - -- **Original Repository:** https://github.com/kevin-wayne/algs4 -- **Java Source Files:** https://github.com/kevin-wayne/algs4/tree/master/src/main/java/edu/princeton/cs/algs4 -- **Textbook:** "Algorithms, 4th Edition" by Sedgewick & Wayne -- **Booksite:** https://algs4.cs.princeton.edu/ -- **Test Data Files:** https://algs4.cs.princeton.edu/code/ (various .txt files) -- **Rust Book:** https://doc.rust-lang.org/book/ -- **Rust API Guidelines:** https://rust-lang.github.io/api-guidelines/ -- **Rust By Example:** https://doc.rust-lang.org/rust-by-example/ - ---- - -## Contributing - -(To be defined based on project goals) - -### For Future Contributors: -1. Read this plan thoroughly -2. Pick a phase or file to work on -3. Follow the conversion guidelines -4. Write tests and documentation -5. Submit PR with clear description -6. Update `PROGRESS.md` - ---- - -## License - -GPLv3 - Inherited from the original algs4 Java implementation. - -Copyright notice to be maintained in all source files. - ---- - -**Last Updated:** 2025-11-13 -**Version:** 2.0 -**Status:** Phase 0 Complete - Ready for Phase 1 -**Next Phase:** Phase 1 - Core I/O & Basic Types - ---- - -## Notes for Sub-Agents / Future Sessions - -### Important Changes from v1.0: -- ✅ Union-Find moved from Phase 9 to Phase 2 (needed for Kruskal's) -- ✅ Phase 7 split into 7A (Shortest Paths & MST) and 7B (Flow & Advanced) -- ✅ Phase 10 split into core (10) and multimedia (11) -- ✅ Phase 1 reduced to essential I/O only (8 files) -- ✅ Explicit decisions made on API, strings, multimedia, testing -- ✅ Files to skip documented (~41 files) -- ✅ Core conversion target: ~160 files (was 201) -- ✅ Timeline revised to 37 days for core (was 35-55) - -### Key Points: -- This plan is a living document - update as needed -- Each phase is designed to fit in typical context window -- Phases can be parallelized if multiple developers/sessions available -- Focus on one phase at a time for single developer -- Keep `PROGRESS.md` updated with completed files -- Add notes about challenges encountered for future reference -- Refer to `.claude/context/` files for detailed conversion patterns - -### Starting Phase 1: -1. Read Phase 1 section above -2. Review Java files in original repo -3. Create I/O modules in `modules/fundamentals/src/io/` -4. Start with `StdIn` and `StdOut` (most commonly used) -5. Write comprehensive tests with example usage -6. Document with examples from textbook - -**Good luck! 🦀** diff --git a/NEXT_STEPS.md b/NEXT_STEPS.md deleted file mode 100644 index c27bcfb..0000000 --- a/NEXT_STEPS.md +++ /dev/null @@ -1,426 +0,0 @@ -# Next Steps - Development Roadmap - -**Last Updated:** 2025-11-17 -**Current Branch:** `claude/review-and-test-01BeQu5243FGkjw3F41i75hC` - ---- - -## Immediate Actions (This Session) - -### 1. Commit & Push Review Changes ✅ - -All formatting, linting, and test fixes have been completed. Ready to commit. - -```bash -# Stage all changes -git add -A - -# Commit with descriptive message -git commit -m "fix: comprehensive QA review - resolve formatting, linting, and test issues - -- Fixed 24 formatting violations (spacing, alignment, collapsible blocks) -- Resolved 35+ clippy warnings (unused code, code quality, debug derives) -- Fixed 3 failing doctests (segment_tree.rs, vector.rs) -- All 986 tests now passing (688 unit + 298 doc tests) -- Zero clippy warnings with -D warnings strict mode -- Zero formatting issues with rustfmt -- Added comprehensive REVIEW_SUMMARY.md - -Changes: -- Formatting: 27 files (graphs, strings, searching, fundamentals modules) -- Linting: Removed unused imports/fields, improved idioms, added Debug derives -- Tests: Fixed mut keywords and floating-point precision issues -- Documentation: Builds successfully with only minor warnings - -Test Results: -- fundamentals: 119 tests ✅ -- searching: 177 tests ✅ -- graphs: 151 tests ✅ -- strings: 188 tests ✅ -- geometry: 146 tests ✅ -- advanced: 205 tests ✅ -- TOTAL: 986 tests ✅" - -# Push to remote -git push -u origin claude/review-and-test-01BeQu5243FGkjw3F41i75hC -``` - -### 2. Create Pull Request (Optional) - -If ready for review by the repository owner: - -```bash -gh pr create --title "QA Review: Fix formatting, linting, and tests (Phases 6-10)" \ - --body "$(cat <<'EOF' -## Summary - -Comprehensive quality assurance review of Phases 6-10 implementations: -- ✅ Fixed all formatting violations (cargo fmt) -- ✅ Resolved all clippy warnings (strict -D warnings mode) -- ✅ Fixed 3 failing doctests -- ✅ All 986 tests passing (688 unit + 298 doc) - -## Changes - -### Code Quality -- Removed unused code (imports, fields, variables) -- Improved idioms (Range::contains, is_some_and, iterators) -- Added missing Debug derives for public structs -- Fixed collapsible if-else blocks -- Alphabetized module imports - -### Test Fixes -- segment_tree.rs: Added mut keywords for mutable methods -- vector.rs: Fixed floating-point precision issues with epsilon checks - -### Documentation -- All docs build successfully -- 22 minor warnings (unresolved links) - can be addressed later - -## Test Results - -| Module | Unit Tests | Doc Tests | Total | -|--------------|------------|-----------|-------| -| fundamentals | 119 | 0 | 119 | -| searching | 177 | 0 | 177 | -| graphs | 79 | 72 | 151 | -| strings | 117 | 71 | 188 | -| geometry | 77 | 69 | 146 | -| advanced | 119 | 86 | 205 | -| **TOTAL** | **688** | **298** | **986** | - -## Quality Metrics -- ✅ Zero clippy warnings (cargo clippy --all --all-targets -- -D warnings) -- ✅ Zero formatting issues (cargo fmt --all --check) -- ✅ 100% tests passing -- ✅ Documentation builds successfully - -## Files Modified -27 files across modules/graphs, modules/strings, modules/searching, modules/fundamentals, modules/advanced - -See REVIEW_SUMMARY.md for complete details. - -## Checklist -- [x] All tests passing -- [x] Clippy clean -- [x] Formatted with rustfmt -- [x] Documentation builds -- [x] No compilation warnings -- [x] Review summary documented -EOF -)" -``` - ---- - -## Short-Term Goals (Next 1-2 Sessions) - -### Phase 3: Sorting Algorithms (Priority: HIGH) - -**Why:** -- No dependencies on other modules -- Fundamental algorithms needed throughout project -- Clean slate - all 18 files need implementation - -**Files to Implement (18 total):** - -#### Session 1: Basic Sorts (5 files) -1. `Selection` - Selection sort (O(n²)) -2. `Insertion` - Insertion sort (O(n²)) -3. `InsertionX` - Optimized insertion with sentinel -4. `BinaryInsertion` - Binary insertion sort -5. `Shell` - Shellsort (O(n^(3/2))) - -**Estimated Time:** 3-4 hours - -#### Session 2: Merge Sorts (3 files) -6. `Merge` - Top-down mergesort (O(n log n)) -7. `MergeBU` - Bottom-up mergesort -8. `MergeX` - Optimized mergesort with cutoff - -**Estimated Time:** 2-3 hours - -#### Session 3: Quick Sorts (4 files) -9. `Quick` - Standard quicksort (O(n log n) average) -10. `Quick3way` - 3-way quicksort (Dijkstra) -11. `QuickX` - Optimized quicksort -12. `QuickBentleyMcIlroy` - Bentley-McIlroy 3-way partitioning - -**Estimated Time:** 3-4 hours - -#### Session 4: Advanced Sorts (6 files) -13. `Heap` - Heapsort (O(n log n)) -14. `LSD` - LSD radix sort (O(n+R)) -15. `MSD` - MSD radix sort (O(n+R)) -16. `InplaceMSD` - In-place MSD radix sort -17. `Quick3string` - 3-way string quicksort -18. `Inversions` - Count inversions using merge sort - -**Estimated Time:** 4-5 hours - -**Total Estimated Time:** 12-16 hours - ---- - -## Medium-Term Goals (Next 5-10 Sessions) - -### Phase 6: Complete Symbol Tables (Priority: HIGH) - -**Remaining Files (13):** - -#### Session 5-6: Tree Implementations (2 files) -- `AVLTreeST` - AVL tree symbol table -- `BTree` - B-tree implementation - -**Estimated Time:** 4-6 hours - -#### Session 7-8: Patricia Tries (2 files) -- `PatriciaSET` - Patricia trie set -- `PatriciaST` - Patricia trie symbol table - -**Estimated Time:** 3-4 hours - -#### Session 9-11: Applications (7 files) -- `FrequencyCounter` - Count word frequencies -- `DeDup` - Remove duplicates -- `Count` - Count occurrences -- `FileIndex` - File indexing -- `LookupCSV` - CSV lookup -- `LookupIndex` - Index lookup -- `KWIK` - Keyword in context - -**Estimated Time:** 6-8 hours - -**Total Estimated Time:** 13-18 hours - ---- - -### Phase 7: Advanced Graph Algorithms (Priority: MEDIUM-HIGH) - -**Categories:** - -#### Shortest Paths (6-8 files) -- Dijkstra's algorithm (single-source shortest path) -- Bellman-Ford algorithm (handles negative weights) -- Acyclic shortest paths (DAGs) -- All-pairs shortest paths - -**Estimated Time:** 8-10 hours - -#### Minimum Spanning Trees (4-5 files) -- Prim's algorithm (lazy and eager) -- Kruskal's algorithm -- Boruvka's algorithm - -**Estimated Time:** 5-7 hours - -#### Network Flow (3-4 files) -- Ford-Fulkerson algorithm -- Max flow / min cut - -**Estimated Time:** 4-6 hours - -#### Other Graph Algorithms (5-6 files) -- Topological sort -- Strongly connected components (Kosaraju-Sharir) -- Transitive closure -- Cycle detection - -**Estimated Time:** 6-8 hours - -**Total Estimated Time:** 23-31 hours - ---- - -## Long-Term Goals (Next 20+ Sessions) - -### Phase 11: Multimedia & Visualization (Optional) - -**Categories:** -- Image processing (Picture, GrayscalePicture) -- Graphics (StdDraw, Draw, DrawListener) -- Audio (StdAudio) -- Physics simulations (CollisionSystem, Particle) - -**Estimated Time:** 40-60 hours - -**Note:** This phase is optional and can be feature-gated. Consider implementing only if there's demand for visualization capabilities. - ---- - -## Development Guidelines - -### Before Starting Each Session - -1. **Pull latest changes** - ```bash - git pull origin main - ``` - -2. **Create feature branch** - ```bash - git checkout -b claude/phase--- - ``` - -3. **Review reference implementation** - - Check original Java code: https://github.com/kevin-wayne/algs4 - - Understand algorithm logic and test cases - -### During Implementation - -1. **Follow TDD approach** - - Write tests first (or alongside implementation) - - Ensure edge cases are covered - - Add doc tests for examples - -2. **Maintain code quality** - - Run `cargo fmt` regularly - - Run `cargo clippy` to catch issues early - - Run `cargo test` frequently - -3. **Document as you go** - - Add comprehensive doc comments - - Include complexity analysis - - Provide usage examples - -### Before Committing - -1. **Final checks** - ```bash - cargo fmt --all --check - cargo clippy --all --all-targets -- -D warnings - cargo test --all - cargo doc --all --no-deps - ``` - -2. **Update PROGRESS.md** - - Mark files as completed - - Update test counts - - Note any deviations or issues - -3. **Commit with clear message** - ```bash - git add -A - git commit -m "feat(): implement ( files) - - - Detailed list of implementations - - Test results - - Any notes or issues" - ``` - -4. **Push and create PR** - ```bash - git push -u origin - gh pr create --title "..." --body "..." - ``` - ---- - -## Suggested Session Breakdown - -### Sprint 1: Sorting (Weeks 1-2) -- Session 1: Basic sorts (Selection, Insertion, Shell) + tests -- Session 2: Merge sorts (Merge, MergeBU, MergeX) + tests -- Session 3: Quick sorts (Quick, Quick3way, QuickX) + tests -- Session 4: Advanced sorts (Heap, radix sorts) + benchmarks - -### Sprint 2: Symbol Tables Completion (Weeks 3-4) -- Session 5: AVL tree + tests -- Session 6: B-tree + tests -- Session 7: Patricia tries + tests -- Session 8: Applications (FrequencyCounter, DeDup, etc.) - -### Sprint 3: Shortest Paths (Weeks 5-6) -- Session 9: Dijkstra + tests -- Session 10: Bellman-Ford + tests -- Session 11: Acyclic SP + all-pairs SP + tests - -### Sprint 4: MST & Flow (Weeks 7-8) -- Session 12: Prim's algorithm + tests -- Session 13: Kruskal's algorithm + tests -- Session 14: Network flow algorithms + tests - -### Sprint 5: Polish & Release (Week 9) -- Session 15: Add benchmarks for all modules -- Session 16: Fix remaining documentation warnings -- Session 17: Create comprehensive examples -- Session 18: Prepare for crates.io release - ---- - -## Success Criteria - -### Definition of "Done" for Each Phase - -1. ✅ All files implemented -2. ✅ All tests passing (unit + doc) -3. ✅ Zero clippy warnings (-D warnings) -4. ✅ Zero formatting issues -5. ✅ Documentation complete with examples -6. ✅ PROGRESS.md updated -7. ✅ PR created and reviewed - -### Project Completion Criteria - -1. ✅ All core phases (0-10) completed -2. ✅ 1000+ tests passing -3. ✅ Comprehensive documentation -4. ✅ Benchmarks demonstrating performance -5. ✅ Examples for common use cases -6. ✅ README with getting started guide -7. ⚠️ Optional: Phase 11 (Multimedia) if desired - ---- - -## Resources - -### Reference Materials -- **Original Java Code:** https://github.com/kevin-wayne/algs4 -- **Textbook:** *Algorithms, 4th Edition* by Sedgewick & Wayne -- **Textbook Website:** https://algs4.cs.princeton.edu/ -- **Rust API Guidelines:** https://rust-lang.github.io/api-guidelines/ - -### Tools & Commands -```bash -# Development workflow -cargo check --all # Quick syntax check -cargo build --all # Full build -cargo test --all # Run all tests -cargo fmt --all # Format code -cargo clippy --all -- -D warnings # Lint check -cargo doc --open --no-deps # Generate and open docs -cargo bench --all # Run benchmarks (when added) - -# Git workflow -git status # Check changes -git diff # View changes -git add -A # Stage all changes -git commit -m "..." # Commit -git push -u origin # Push to remote -gh pr create # Create PR (requires gh CLI) -``` - ---- - -## Questions to Consider - -1. **Priority:** Should we complete Phase 3 (Sorting) first, or finish Phase 6 (Symbol Tables)? - - **Recommendation:** Phase 3 first - no dependencies, clean slate - -2. **Testing:** Should we add property-based testing with `proptest`? - - **Recommendation:** Yes, for Phase 3 onwards - helps verify algorithmic properties - -3. **Benchmarks:** When should we add performance benchmarks with `criterion`? - - **Recommendation:** After Phase 3 (Sorting) - easy to benchmark sorting algorithms - -4. **Documentation:** Should we fix the 22 rustdoc warnings now or later? - - **Recommendation:** Later - low priority, doesn't affect functionality - -5. **Multimedia:** Should we implement Phase 11 (Multimedia) at all? - - **Recommendation:** Defer decision until core phases complete - may not be necessary - ---- - -**Plan Created:** 2025-11-17 -**Status:** ✅ READY FOR CONTINUED DEVELOPMENT -**Next Action:** Commit review changes and start Phase 3 (Sorting) diff --git a/PHASE6_PLAN.md b/PHASE6_PLAN.md deleted file mode 100644 index ed679c0..0000000 --- a/PHASE6_PLAN.md +++ /dev/null @@ -1,480 +0,0 @@ -# Phase 6: Searching & Symbol Tables - Implementation Plan - -**Status:** Ready to Start -**Priority:** HIGH -**Module:** `modules/searching/` -**Estimated Effort:** 2-3 sessions -**Target Files:** 20 total - ---- - -## Overview - -Phase 6 focuses on implementing fundamental search algorithms and symbol table (map/dictionary) data structures. These are critical components for efficient data retrieval and are used extensively in real-world applications. - -### Key Concepts -- **Symbol Tables:** Key-value pair data structures (maps/dictionaries) -- **Binary Search:** O(log n) search in sorted arrays -- **Binary Search Trees:** Dynamic ordered symbol tables -- **Balanced Trees:** Self-balancing BSTs (Red-Black, AVL) -- **Hash Tables:** O(1) average-case search/insert -- **Tries:** String-specific symbol tables with prefix operations - ---- - -## Implementation Priority - -### High Priority (Core - Session 1) -1. **SequentialSearchST** - Baseline unordered symbol table -2. **BinarySearch** - Classic binary search algorithm -3. **BinarySearchST** - Ordered array-based symbol table -4. **BST** - Basic binary search tree -5. **SeparateChainingHashST** - Hash table with chaining - -### Medium Priority (Advanced - Session 2) -6. **RedBlackBST** - Balanced BST with guaranteed O(log n) -7. **LinearProbingHashST** - Open addressing hash table -8. **TrieST** - R-way trie symbol table -9. **TrieSET** - R-way trie set - -### Lower Priority (Specialized - Session 3) -10. **AVLTreeST** - AVL tree (alternative balanced BST) -11. **BTree** - B-tree for external storage -12. **PatriciaST** - Practical Algorithm to Retrieve Information -13. **PatriciaSET** - Patricia trie set - -### Applications (As Time Permits) -14. **FrequencyCounter** - Count word frequencies -15. **DeDup** - Remove duplicates from input -16. **Count** - Count occurrences -17. **FileIndex** - Inverted index for file search -18. **LookupCSV** - CSV database lookup -19. **LookupIndex** - General index lookup -20. **KWIK** - Keyword in context search - ---- - -## Session 1: Basic Search & Symbol Tables - -### Goals -- Implement foundational search algorithms -- Create basic symbol table implementations -- Establish API patterns for all symbol tables - -### Files to Implement - -#### 1. BinarySearch (Standalone Algorithm) -```rust -// modules/searching/src/binary_search.rs -pub fn binary_search(arr: &[T], key: &T) -> Option -pub fn rank(arr: &[T], key: &T) -> usize // number of keys < key -``` - -**Features:** -- Generic binary search on sorted slices -- Return index if found, None otherwise -- Rank function for insertion point - -**Tests:** -- Empty array -- Single element -- Key at boundaries (first, last, middle) -- Key not present -- Duplicate keys - ---- - -#### 2. SequentialSearchST (Unordered Linked List) -```rust -// modules/searching/src/sequential_search_st.rs -pub struct SequentialSearchST { - head: Option>>, - n: usize, -} - -struct Node { - key: K, - val: V, - next: Option>>, -} -``` - -**API:** -- `new()` - Create empty table -- `put(key, val)` - Insert/update -- `get(&key) -> Option<&V>` - Retrieve value -- `delete(&key)` - Remove key -- `contains(&key) -> bool` -- `is_empty() -> bool` -- `size() -> usize` -- `keys() -> impl Iterator` - -**Performance:** O(n) for all operations (baseline) - ---- - -#### 3. BinarySearchST (Ordered Array) -```rust -// modules/searching/src/binary_search_st.rs -pub struct BinarySearchST { - keys: Vec, - vals: Vec, -} -``` - -**API:** Same as SequentialSearchST plus: -- `min() -> Option<&K>` - Smallest key -- `max() -> Option<&K>` - Largest key -- `floor(&key) -> Option<&K>` - Largest key ≤ given key -- `ceiling(&key) -> Option<&K>` - Smallest key ≥ given key -- `rank(&key) -> usize` - Number of keys < given key -- `select(k: usize) -> Option<&K>` - Key of rank k -- `delete_min()` - Remove smallest key -- `delete_max()` - Remove largest key -- `range(&lo, &hi) -> impl Iterator` - Keys in range - -**Performance:** -- Search: O(log n) -- Insert: O(n) (array shifting) -- Delete: O(n) - ---- - -#### 4. BST (Binary Search Tree) -```rust -// modules/searching/src/bst.rs -pub struct BST { - root: Option>>, -} - -struct Node { - key: K, - val: V, - left: Option>>, - right: Option>>, - n: usize, // subtree size -} -``` - -**API:** Same as BinarySearchST (all ordered operations) - -**Additional:** -- `height() -> usize` - Tree height -- Recursive implementation -- Size-based operations - -**Performance:** -- Average: O(log n) -- Worst: O(n) (unbalanced) - -**Tests:** -- BST invariant (left < parent < right) -- Size consistency -- Ordered iteration -- Range queries -- Floor/ceiling correctness - ---- - -#### 5. SeparateChainingHashST (Hash Table with Chaining) -```rust -// modules/searching/src/separate_chaining_hash_st.rs -pub struct SeparateChainingHashST { - chains: Vec>, - n: usize, // total keys - m: usize, // number of chains -} -``` - -**Features:** -- Dynamic resizing (double/halve) -- Load factor α = n/m ≈ 5-10 -- Uses SequentialSearchST for chains - -**API:** Basic symbol table API (unordered) - -**Performance:** O(1) average case - ---- - -### Testing Strategy - -1. **Unit Tests** for each data structure - - Empty table operations - - Single element - - Multiple insertions - - Deletions - - Iterator correctness - -2. **Correctness Tests** - - BST invariants - - Ordered operations (min, max, floor, ceiling, rank, select) - - Range queries - - Hash table resizing - -3. **Performance Benchmarks** - - Compare against std::collections::HashMap - - Compare against std::collections::BTreeMap - - Measure resize overhead - -4. **Documentation Tests** - - Example usage in doc comments - - Show idiomatic Rust patterns - ---- - -## Session 2: Balanced Trees & Tries - -### Goals -- Implement self-balancing BSTs -- Create trie-based symbol tables -- Ensure guaranteed O(log n) performance - -### Files to Implement - -#### 6. RedBlackBST (Red-Black Tree) -```rust -pub struct RedBlackBST { - root: Option>>, -} - -struct Node { - key: K, - val: V, - left: Option>>, - right: Option>>, - n: usize, - color: Color, // RED or BLACK -} - -enum Color { Red, Black } -``` - -**Features:** -- Left-leaning red-black BST (Sedgewick variant) -- Guaranteed O(log n) for all operations -- Self-balancing rotations - -**Core Operations:** -- `rotate_left()`, `rotate_right()` -- `flip_colors()` -- Maintain red-black invariants - -**Tests:** -- Red-black properties: - 1. Root is black - 2. No two consecutive red nodes - 3. All paths have same number of black nodes -- Performance vs BST on random data - ---- - -#### 7. LinearProbingHashST (Open Addressing) -```rust -pub struct LinearProbingHashST { - keys: Vec>, - vals: Vec>, - n: usize, // number of key-value pairs - m: usize, // size of arrays -} -``` - -**Features:** -- Open addressing with linear probing -- Resize when α > 0.5 or α < 0.125 -- Tombstone-free deletion (rehash cluster) - -**Performance:** O(1) average, sensitive to clustering - ---- - -#### 8. TrieST (R-way Trie Symbol Table) -```rust -pub struct TrieST { - root: Option>>, - n: usize, -} - -struct Node { - val: Option, - next: [Option>>; R], // R = 256 for extended ASCII -} -``` - -**API:** Standard ST API plus: -- `keys_with_prefix(&prefix)` - All keys starting with prefix -- `longest_prefix_of(&s)` - Longest key that is a prefix of s -- `keys_that_match(&pattern)` - Wildcard matching (. matches any char) - -**Performance:** -- Search hit: O(L) where L = key length -- Search miss: O(log_R N) average -- Space: O(RNL) worst case - ---- - -#### 9. TrieSET (R-way Trie Set) -Similar to TrieST but stores only keys (no values). - ---- - -## Session 3: Advanced Trees & Applications - -### Files to Implement - -#### 10. AVLTreeST (AVL Tree) -Alternative balanced BST with stricter balance (height difference ≤ 1). - -#### 11. BTree (B-tree) -Multi-way balanced tree for external storage simulation. - -#### 12-13. Patricia Tries -Space-optimized tries (radix trees). - -#### 14-20. Applications -Practical programs demonstrating symbol table usage. - ---- - -## Common API Pattern - -All symbol tables should implement a common trait: - -```rust -pub trait SymbolTable { - fn new() -> Self; - fn put(&mut self, key: K, val: V); - fn get(&self, key: &K) -> Option<&V>; - fn delete(&mut self, key: &K); - fn contains(&self, key: &K) -> bool { - self.get(key).is_some() - } - fn is_empty(&self) -> bool; - fn size(&self) -> usize; - fn keys(&self) -> impl Iterator + '_>; -} - -pub trait OrderedSymbolTable: SymbolTable { - fn min(&self) -> Option<&K>; - fn max(&self) -> Option<&K>; - fn floor(&self, key: &K) -> Option<&K>; - fn ceiling(&self, key: &K) -> Option<&K>; - fn rank(&self, key: &K) -> usize; - fn select(&self, k: usize) -> Option<&K>; - // ... range operations -} -``` - ---- - -## Module Structure - -``` -modules/searching/ -├── src/ -│ ├── lib.rs -│ ├── binary_search.rs -│ ├── sequential_search_st.rs -│ ├── binary_search_st.rs -│ ├── bst.rs -│ ├── red_black_bst.rs -│ ├── avl_tree_st.rs -│ ├── btree.rs -│ ├── separate_chaining_hash_st.rs -│ ├── linear_probing_hash_st.rs -│ ├── trie_st.rs -│ ├── trie_set.rs -│ ├── patricia_st.rs -│ ├── patricia_set.rs -│ └── apps/ -│ ├── frequency_counter.rs -│ ├── dedup.rs -│ ├── count.rs -│ ├── file_index.rs -│ ├── lookup_csv.rs -│ ├── lookup_index.rs -│ └── kwik.rs -├── tests/ -│ └── integration_tests.rs -├── benches/ -│ └── benchmarks.rs -└── Cargo.toml -``` - ---- - -## Success Criteria - -### Phase 6 Complete When: -- [ ] All 20 files implemented -- [ ] 200+ unit tests passing -- [ ] BST invariants verified -- [ ] Red-black tree properties verified -- [ ] Hash table resizing tested -- [ ] Trie prefix operations tested -- [ ] All ordered operations correct (floor, ceiling, rank, select, range) -- [ ] Documentation complete with examples -- [ ] Code formatted and linted (0 warnings) -- [ ] Benchmarks comparing different implementations -- [ ] CI passing - ---- - -## Key Challenges & Solutions - -### Challenge 1: Ownership in Tree Structures -**Solution:** Use `Option>` for child pointers, ensuring unique ownership. - -### Challenge 2: Iterator Lifetimes -**Solution:** Return boxed trait objects or implement custom iterator types with proper lifetimes. - -### Challenge 3: Generic Hash Functions -**Solution:** Require `K: Hash + Eq` trait bounds, use `std::collections::hash_map::DefaultHasher`. - -### Challenge 4: Trie Memory Usage -**Solution:** Start with R=256 for simplicity, optionally implement compressed tries (Patricia) later. - -### Challenge 5: Red-Black Balancing -**Solution:** Follow Sedgewick's left-leaning red-black BST algorithm exactly, with comprehensive tests. - ---- - -## Testing Data - -Use these standard test files from algs4: -- `tinyST.txt` - Small symbol table -- `tale.txt` - Word frequency counting -- `leipzig1M.txt` - Large text file (1M words) - ---- - -## Performance Targets - -| Operation | Sequential | BinarySearchST | BST (avg) | RedBlackBST | Hash Table | -|-----------|-----------|----------------|-----------|-------------|------------| -| Search | O(n) | O(log n) | O(log n) | O(log n) | O(1)* | -| Insert | O(n) | O(n) | O(log n) | O(log n) | O(1)* | -| Delete | O(n) | O(n) | O(log n) | O(log n) | O(1)* | -| Min/Max | O(n) | O(1) | O(h) | O(log n) | O(n) | -| Floor | O(n) | O(log n) | O(h) | O(log n) | N/A | -| Range | O(n) | O(log n + k) | O(h + k) | O(log n + k)| O(n) | - -*Average case; worst case can be O(n) if poor hash function or clustering - ---- - -## References - -- **Textbook:** Algorithms, 4th Edition, Sections 3.1-3.5 -- **Java Source:** https://github.com/kevin-wayne/algs4 (edu.princeton.cs.algs4) -- **Online Course:** https://algs4.cs.princeton.edu/30searching/ -- **Rust Collections:** std::collections::{HashMap, BTreeMap} - ---- - -## Next Phase Preview - -**Phase 7: Graph Fundamentals** will build on symbol tables for: -- Symbol graphs (string-named vertices) -- Adjacency list representations (using hash maps) -- Efficient graph traversals diff --git a/PROGRESS.md b/PROGRESS.md deleted file mode 100644 index b2416ea..0000000 --- a/PROGRESS.md +++ /dev/null @@ -1,788 +0,0 @@ -# algs4-rust Progress Tracker - -Last Updated: 2025-11-18 - -## Overview - -- **Total Files in Original:** ~201 -- **Core Files to Convert:** ~160 -- **Files Skipped:** ~41 -- **Files Completed:** 145/160 (90.6%) ✅ NEAR COMPLETE -- **Current Phase:** ALL CORE PHASES COMPLETE -- **Total Tests Passing:** 1,494 tests (986 unit + 508 doc tests) - ---- - -## Phase 0: Project Foundation ✅ COMPLETE -**Completed:** 2025-11-13 -**Effort:** 1 session - -### Deliverables -- [x] Project structure setup -- [x] Cargo workspace with 7 modules -- [x] .gitignore and LICENSE -- [x] README.md with project overview -- [x] CONVERSION_PLAN.md (v2.0 with all improvements) -- [x] Claude context files (.claude/) -- [x] CI/CD pipeline (.github/workflows/) -- [x] PROGRESS.md (this file) - ---- - -## Phase 1: Core I/O & Basic Types (6/8) ✅ SUBSTANTIALLY COMPLETE -**Started:** 2025-11-13 -**Completed:** 2025-11-13 -**Priority:** HIGH -**Module:** `modules/fundamentals/` -**Effort:** 1 session - -### Files Implemented -- [x] `StdIn` - Standard input utilities (with global functions) -- [x] `StdOut` - Standard output utilities (thin wrapper over println!) -- [ ] `In` - File and URL input (deferred - not critical) -- [ ] `Out` - File output (deferred - use std::fs instead) -- [x] `StdRandom` - Complete random number generation (all distributions) -- [x] `Stopwatch` - Elapsed time measurement -- [x] `Counter` - Simple counter with name -- [x] `Accumulator` - Running statistics with Welford's algorithm - -### Completion Checklist -- [x] 6 of 8 files implemented (2 deferred as non-critical) -- [x] Unit tests for each file (41 tests passing) -- [x] Doc tests with examples -- [x] Example program (phase1_demo.rs) -- [x] Documentation complete with examples -- [x] Code formatted and linted (0 warnings) -- [x] All tests passing - -### Key Implementation Details -- **StdRandom:** Full distribution support (uniform, Gaussian, Poisson, exponential, Pareto, Cauchy, geometric, discrete) -- **StdIn:** Thread-safe global instance with lazy_static, supports all primitive types -- **Accumulator:** Uses numerically stable Welford's algorithm -- **Dependencies added:** `rand_distr`, `lazy_static` - -### Notes -- Skipped `In` and `Out` as Rust's `std::io` and `std::fs` provide better alternatives -- StdIn uses unsafe transmute for lifetime extension (necessary for token iteration) -- All code is well-documented with comprehensive examples - ---- - -## Phase 2: Collections & Union-Find (12/12) ✅ COMPLETE -**Started:** 2025-11-15 -**Completed:** 2025-11-15 -**Priority:** HIGH -**Module:** `modules/fundamentals/` -**Effort:** 1 session - -### Collections (9/9) ✅ -- [x] `LinkedBag` - Linked-list bag implementation -- [x] `LinkedQueue` - Linked-list queue implementation with first/last pointers -- [x] `LinkedStack` - Linked-list stack implementation -- [x] `ResizingArrayBag` - Array-based bag with dynamic resizing -- [x] `ResizingArrayQueue` - Circular array queue with wraparound -- [x] `ResizingArrayStack` - Array-based stack with amortized constant time -- [x] Comprehensive Iterator implementations (Iter and IntoIter for all) -- [x] Display trait implementations -- [x] Debug trait implementations - -### Union-Find (3/3) ✅ ⭐ Moved from Phase 9 -- [x] `QuickFindUF` - Quick-find (O(1) find, O(n) union) -- [x] `QuickUnionUF` - Quick-union (tree-based representation) -- [x] `WeightedQuickUnionUF` - Weighted union with path compression (recommended) - -### Completion Checklist -- [x] 12 core data structures implemented -- [x] Iterator trait implemented for all collections (borrowing + consuming) -- [x] Union-Find correctness tests (textbook examples) -- [x] All 129 unit tests passing -- [x] Documentation complete with examples -- [x] Code formatted and linted (0 clippy warnings) -- [x] CI passing - -### Key Implementation Details - -**Collections:** -- **Linked structures:** Use `Box>` and `Option` for safe memory management -- **LinkedQueue:** Uses `NonNull` pointer for efficient last-node tracking -- **ResizingArrayQueue:** Implements circular buffer with modular arithmetic -- **Resizing strategy:** Double on full, halve when 1/4 full for amortized O(1) -- **All collections:** Full LIFO/FIFO iteration support with proper iterator types - -**Union-Find:** -- **QuickFindUF:** Flat array representation, instant find operations -- **QuickUnionUF:** Parent-pointer trees, simple union by root linking -- **WeightedQuickUnionUF:** Path compression with union by size (O(log n)) -- All implementations include bounds checking and validation - -### Testing -- 129 total tests passing (37 from Phase 1 + 92 from Phase 2) -- Comprehensive edge case testing (empty, single element, large datasets) -- FIFO/LIFO order verification -- Resizing behavior verification -- Union-Find textbook example (tinyUF.txt) -- Iterator consumption tests - -### Notes -- Skipped `Bag`, `Queue`, `Stack` wrapper types (users can directly use specific implementations) -- Skipped `SET`, `ST` (will be in Phase 5 with other symbol tables) -- Skipped `Knuth` shuffle (belongs with sorting utilities in Phase 3) -- All code passes clippy with `-D warnings` (strict mode) -- Collections provide both linked and array implementations for flexibility - ---- - -## Phase 3: Sorting Algorithms (18/18) ✅ COMPLETE -**Completed:** 2025-11-18 -**Priority:** MEDIUM -**Module:** `modules/sorting/` - -### Basic Sorts (5/5) ✅ -- [x] `Selection` - Selection sort -- [x] `Insertion` - Insertion sort -- [x] `InsertionX` - Insertion with sentinel -- [x] `BinaryInsertion` - Binary insertion sort -- [x] `Shell` - Shellsort - -### Merge Sorts (3/3) ✅ -- [x] `Merge` - Top-down mergesort -- [x] `MergeBU` - Bottom-up mergesort -- [x] `MergeX` - Optimized mergesort - -### Quick Sorts (4/4) ✅ -- [x] `Quick` - Quicksort -- [x] `Quick3way` - 3-way quicksort -- [x] `QuickX` - Optimized quicksort -- [x] `QuickBentleyMcIlroy` - Bentley-McIlroy 3-way - -### Other Sorts (6/6) ✅ -- [x] `Heap` - Heapsort -- [x] `LSD` - LSD radix sort -- [x] `MSD` - MSD radix sort -- [x] `InplaceMSD` - In-place MSD -- [x] `Quick3string` - 3-way string quicksort -- [x] `Inversions` - Count inversions - -### Completion Checklist -- [x] All 18 sorting algorithms implemented -- [x] Generic implementations with trait bounds -- [x] Correctness tests (38 tests passing) -- [x] Stability tests (for stable sorts) -- [x] Documentation with complexity analysis -- [x] Code formatted and linted -- [x] All tests passing - ---- - -## Phase 4: Priority Queues (4/10) ✅ CORE COMPLETE -**Started:** 2025-11-15 -**Completed:** 2025-11-15 -**Priority:** MEDIUM-HIGH -**Module:** `modules/fundamentals/` -**Effort:** 1 session - -### Basic Priority Queues (4/4) ✅ -- [x] `MaxPQ` - Maximum priority queue with binary heap -- [x] `MinPQ` - Minimum priority queue with binary heap -- [x] `IndexMaxPQ` - Index-based max PQ with change-key operations -- [x] `IndexMinPQ` - Index-based min PQ with change-key operations - -### Advanced Priority Queues (0/6) [DEFERRED] -- [ ] `BinomialMinPQ` - Binomial heap (deferred to Phase 11) -- [ ] `FibonacciMinPQ` - Fibonacci heap (deferred to Phase 11) -- [ ] `IndexBinomialMinPQ` - Indexed binomial heap (deferred to Phase 11) -- [ ] `IndexFibonacciMinPQ` - Indexed Fibonacci heap (deferred to Phase 11) -- [ ] `MultiwayMinPQ` - Multiway heap (deferred to Phase 11) -- [ ] `IndexMultiwayMinPQ` - Indexed multiway heap (deferred to Phase 11) - -### Completion Checklist -- [x] 4 core priority queues implemented (covers 95% of use cases) -- [x] Heap property tests (comprehensive validation) -- [x] Index-based operations tests (change-key, increase-key, decrease-key) -- [x] 48 unit tests passing -- [x] Documentation complete with examples -- [x] Code formatted and linted (0 clippy warnings) -- [x] All tests passing (177 total workspace tests) - -### Key Implementation Details - -**Basic Priority Queues:** -- **Binary heap representation:** 1-based array indexing for simple parent/child calculations -- **MaxPQ/MinPQ:** O(log n) insert/delete, O(1) peek, automatic resizing (2x growth, 1/4 shrink) -- **Iterator support:** Both borrowing (`iter()`) and consuming (`into_iter()`) iterators -- **Heap property validation:** Debug assertions ensure heap invariant is maintained - -**Indexed Priority Queues:** -- **Three-array structure:** `pq` (heap of indices), `qp` (inverse mapping), `keys` (key values) -- **IndexMaxPQ/IndexMinPQ:** Support efficient change-key, increase-key, decrease-key operations -- **Applications:** Essential for graph algorithms (Dijkstra, Prim's MST) -- **Index range:** 0 to max_n-1, with O(1) containment checking - -### Testing -- 48 priority queue tests (13 MaxPQ, 13 MinPQ, 11 IndexMaxPQ, 11 IndexMinPQ) -- Heap property verification after every operation -- Edge cases: empty queues, single element, large datasets -- Index operations: insert, delete, change, increase, decrease -- Iterator correctness in sorted order - -### Notes -- Advanced priority queues (Binomial, Fibonacci, Multiway) deferred to Phase 11 -- These are specialized structures mainly for advanced graph algorithms -- The 4 core priority queues cover the vast majority of practical applications -- Rust's `std::collections::BinaryHeap` provides similar functionality but our implementation: - - Matches textbook API for educational purposes - - Provides both min and max variants - - Includes indexed versions with change-key operations - ---- - -## Phase 5: Testing & Quality Assurance ✅ COMPLETE -**Started:** 2025-11-16 -**Completed:** 2025-11-16 -**Priority:** HIGH -**Effort:** 1 session - -### Objectives -- Ensure all tests pass across all modules -- Verify code formatting compliance (cargo fmt) -- Verify lint compliance (cargo clippy) -- Fix any compilation errors or warnings -- Prepare codebase for Phase 6 implementation - -### Completion Checklist -- [x] Fixed compilation errors in IndexMinPQ and IndexMaxPQ -- [x] Added Clone trait bound to IndexMaxPQ and IndexMinPQ -- [x] All 177 unit tests passing -- [x] All 149 doc tests passing -- [x] Code formatted with cargo fmt (0 formatting issues) -- [x] Clippy lints passing with -D warnings (0 clippy warnings) -- [x] Removed needless lifetime annotations -- [x] Fixed syntax errors (extra closing brace) - -### Key Fixes -- **IndexMaxPQ/IndexMinPQ:** Added `Clone` trait bound to enable vector initialization -- **Syntax:** Removed extra closing brace in IndexMinPQ::greater method -- **Lifetimes:** Removed needless lifetime annotations in IntoIterator impls -- **Formatting:** Applied rustfmt across all modules - -### Test Results -- **Total Tests:** 177 unit tests + 149 doc tests = 326 tests passing -- **Modules Tested:** fundamentals (all components) -- **Coverage:** Core I/O, Collections, Union-Find, Priority Queues, Utilities - -### Notes -- All existing implementations (Phases 1, 2, 4) are now fully tested and lint-free -- Codebase is ready for next implementation phase -- Zero technical debt or warnings - ---- - -## Phase 6: Searching & Symbol Tables (21/21) ✅ COMPLETE -**Completed:** 2025-11-18 -**Priority:** HIGH -**Module:** `modules/searching/` - -### Search Algorithms (3/3) ✅ -- [x] `BinarySearch` - Binary search -- [x] `BinarySearchST` - Binary search symbol table -- [x] `SequentialSearchST` - Unordered linked list - -### Trees (5/5) ✅ -- [x] `BST` - Binary search tree -- [x] `RedBlackBST` - Red-black BST -- [x] `AVLTreeST` - AVL tree -- [x] `BTree` - B-tree - -### Hash Tables (2/2) ✅ -- [x] `SeparateChainingHashST` - Separate chaining -- [x] `LinearProbingHashST` - Linear probing - -### Tries (4/4) ✅ -- [x] `TrieSET` - R-way trie set -- [x] `TrieST` - R-way trie symbol table -- [x] `PatriciaSET` - Patricia trie set -- [x] `PatriciaST` - Patricia trie symbol table - -### Applications (7/7) ✅ -- [x] `FrequencyCounter` - Count word frequencies -- [x] `DeDup` - Remove duplicates -- [x] `Count` - Count occurrences -- [x] `FileIndex` - File indexing -- [x] `LookupCSV` - CSV lookup -- [x] `LookupIndex` - Index lookup -- [x] `KWIK` - Keyword in context - -### Completion Checklist -- [x] All 21 files implemented -- [x] BST invariants tested -- [x] Red-black tree properties verified -- [x] Hash table resizing tested -- [x] Trie correctness tests -- [x] Application programs work (221 tests passing) -- [x] Documentation complete -- [x] Code formatted and linted -- [x] All doctests fixed and passing - ---- - -## Phase 6: Graph Fundamentals (13/18) ✅ CORE COMPLETE -**Started:** 2025-11-16 -**Completed:** 2025-11-16 -**Priority:** HIGH -**Module:** `modules/graphs/` -**Effort:** 1 session - -### Graph Structures (4/7) ✅ Core Complete -- [x] `Graph` - Undirected graph -- [x] `Digraph` - Directed graph -- [x] `EdgeWeightedGraph` - Weighted undirected -- [x] `EdgeWeightedDigraph` - Weighted directed -- [ ] `AdjMatrixEdgeWeightedDigraph` - Adjacency matrix (deferred - not critical) -- [ ] `SymbolGraph` - String-vertex mapping (deferred - Phase 7C) -- [ ] `SymbolDigraph` - Directed symbol graph (deferred - Phase 7C) - -### Generators (0/2) [DEFERRED] -- [ ] `GraphGenerator` - Random graph generation (deferred - Phase 7C) -- [ ] `DigraphGenerator` - Random digraph generation (deferred - Phase 7C) - -### Traversal (5/8) ✅ Core Complete -- [x] `DepthFirstPaths` - DFS paths -- [x] `BreadthFirstPaths` - BFS paths -- [x] `DepthFirstDirectedPaths` - Directed DFS paths -- [x] `BreadthFirstDirectedPaths` - Directed BFS paths -- [ ] `DepthFirstSearch` - Basic DFS (merged into DepthFirstPaths) -- [ ] `NonrecursiveDFS` - Iterative DFS (deferred - not critical) -- [ ] `NonrecursiveDirectedDFS` - Directed iterative DFS (deferred - not critical) -- [ ] `DirectedDFS` - Reachability (deferred - can use DepthFirstDirectedPaths) - -### Components (1/1) ✅ -- [x] `CC` - Connected components - -### Edge Types (2/2) ✅ -- [x] `Edge` - Weighted edge for undirected graphs -- [x] `DirectedEdge` - Weighted directed edge - -### Completion Checklist -- [x] 13 core files implemented (4 graphs + 2 edges + 5 traversal + 1 components + 1 lib) -- [x] Graph construction tests (79 unit tests + 72 doc tests = 151 total) -- [x] Traversal correctness tests -- [x] Path reconstruction tests -- [x] Edge comparison and ordering tests -- [x] Comprehensive examples in documentation -- [x] Code formatted and linted (0 clippy warnings) -- [x] All tests passing (151 tests total) - -### Key Implementation Details - -**Graph Structures:** -- **Graph:** Adjacency list with Vec>, O(1) edge addition, O(degree) adjacency iteration -- **Digraph:** Directed adjacency list with indegree tracking, includes reverse() method -- **EdgeWeightedGraph:** Stores Edge objects in adjacency lists -- **EdgeWeightedDigraph:** Stores DirectedEdge objects in adjacency lists - -**Edge Types:** -- **Edge:** Implements Ord for MST algorithms, provides either() and other() methods -- **DirectedEdge:** Implements Ord for shortest path algorithms, provides from() and to() methods - -**Traversal Algorithms:** -- **DepthFirstPaths:** Recursive DFS with path reconstruction -- **BreadthFirstPaths:** Iterative BFS using VecDeque, finds shortest paths -- **DepthFirstDirectedPaths:** DFS for directed graphs -- **BreadthFirstDirectedPaths:** BFS for directed graphs with distance tracking -- **CC:** Connected components using DFS, tracks component IDs and sizes - -### Testing -- 79 unit tests passing (all graph structures and algorithms) -- 72 doc tests passing (comprehensive examples) -- Zero clippy warnings with -D warnings -- All panic cases properly tested -- Edge cases covered (empty graphs, single vertex, self-loops, parallel edges) - -### Notes -- Deferred 5 non-critical files to Phase 7C (generators, symbol graphs, specialized traversals) -- Core graph functionality complete and ready for Phase 7A (Shortest Paths & MST) -- All critical graph structures and traversal algorithms implemented -- Excellent test coverage with comprehensive documentation - ---- - -## Phase 7A: Shortest Paths & MST (12/12) ✅ COMPLETE -**Completed:** 2025-11-18 -**Priority:** HIGH -**Module:** `modules/graphs/` - -### Shortest Paths (8/8) ✅ -- [x] `DijkstraSP` - Dijkstra's algorithm (non-negative weights) -- [x] `DijkstraUndirectedSP` - Dijkstra undirected -- [x] `DijkstraAllPairsSP` - All-pairs Dijkstra -- [x] `BellmanFordSP` - Bellman-Ford (negative weights, cycle detection) -- [x] `AcyclicSP` - Shortest paths in DAG (topological sort) -- [x] `AcyclicLP` - Longest paths in DAG -- [x] `FloydWarshall` - Floyd-Warshall all-pairs DP -- [x] `TransitiveClosure` - Transitive closure (reachability) - -### MST (4/4) ✅ -- [x] `LazyPrimMST` - Lazy Prim's algorithm -- [x] `PrimMST` - Eager Prim's with IndexMinPQ -- [x] `KruskalMST` - Kruskal's using Union-Find -- [x] `BoruvkaMST` - Boruvka's parallel MST - -### Completion Checklist -- [x] All 12 files implemented -- [x] Shortest path correctness tests (130+ tests) -- [x] MST weight verification -- [x] Negative weight handling (Bellman-Ford) -- [x] Negative cycle detection -- [x] Path reconstruction for all algorithms -- [x] Documentation with complexity analysis -- [x] Code formatted and linted -- [x] All tests passing - ---- - -## Phase 7B: Flow & Advanced Graph Analysis (18/18) ✅ COMPLETE -**Completed:** 2025-11-18 -**Priority:** MEDIUM -**Module:** `modules/graphs/` - -### Cycles (8/8) ✅ -- [x] `Cycle` - Cycle detection (undirected DFS) -- [x] `DirectedCycle` - Cycle detection (directed with on-stack tracking) -- [x] `DirectedCycleX` - Non-recursive cycle detection -- [x] `EdgeWeightedDirectedCycle` - Weighted directed cycle detection -- [x] `EulerianCycle` - Eulerian cycle (Hierholzer's algorithm) -- [x] `EulerianPath` - Eulerian path (undirected) -- [x] `DirectedEulerianCycle` - Directed Eulerian cycle -- [x] `DirectedEulerianPath` - Directed Eulerian path - -### Topological (2/2) ✅ -- [x] `Topological` - Topological sort for DAGs -- [x] `DepthFirstOrder` - Pre/post/reverse-post order - -### SCC (3/3) ✅ -- [x] `KosarajuSharirSCC` - Two-pass DFS algorithm -- [x] `TarjanSCC` - Single-pass with low-link values -- [x] `GabowSCC` - Path-based with two stacks - -### Bipartite (2/2) ✅ -- [x] `Bipartite` - DFS-based two-coloring -- [x] `BipartiteX` - BFS-based non-recursive - -### Maximum Flow (3/3) ✅ -- [x] `FlowEdge` - Flow edge with residual capacity -- [x] `FlowNetwork` - Flow network structure -- [x] `FordFulkerson` - Ford-Fulkerson max flow/min cut (Edmonds-Karp) - -### Completion Checklist -- [x] All 18 files implemented -- [x] Cycle detection tests (all variants) -- [x] Topological order verification -- [x] SCC correctness tests (all algorithms) -- [x] Max flow value tests -- [x] Min-cut verification -- [x] Eulerian path/cycle tests -- [x] Documentation with complexity analysis (219+ tests) -- [x] Code formatted and linted -- [x] All tests passing - ---- - -## Phase 7C: Graph Applications (0/7) [OPTIONAL] -**Priority:** LOW -**Module:** `modules/graphs/` - -- [ ] `BipartiteMatching` - Bipartite matching -- [ ] `HopcroftKarp` - Hopcroft-Karp algorithm -- [ ] `GlobalMincut` - Global minimum cut -- [ ] `AssignmentProblem` - Assignment problem -- [ ] `CPM` - Critical path method -- [ ] `DegreesOfSeparation` - Degrees of separation -- [ ] `Arbitrage` - Arbitrage detection - ---- - -## Phase 8: String Processing (15/17) ✅ CORE COMPLETE -**Completed:** 2025-11-18 -**Priority:** MEDIUM -**Module:** `modules/strings/` - -### Pattern Matching (3/3) ✅ -- [x] `KMP` - Knuth-Morris-Pratt substring search -- [x] `BoyerMoore` - Boyer-Moore substring search -- [x] `RabinKarp` - Rabin-Karp fingerprint search - -### Regular Expressions (1/1) ✅ -- [x] `NFA` - Nondeterministic finite automaton for pattern matching - -### Compression (3/3) ✅ -- [x] `LZW` - LZW compression/decompression -- [x] `Huffman` - Huffman coding with prefix-free codes -- [x] `RunLength` - Run-length encoding - -### Suffix Structures (2/2) ✅ -- [x] `SuffixArray` - Suffix array construction -- [x] `SuffixArrayX` - Optimized suffix array with LCP - -### String Utilities (1/1) ✅ -- [x] `Alphabet` - Alphabet data type with radix mapping - -### Applications (0/2) [OPTIONAL] -- [ ] `LongestCommonSubstring` - LCS (deferred) -- [ ] `LongestRepeatedSubstring` - LRS (can use suffix array) - -### Completion Checklist -- [x] All core files implemented (15/17) -- [x] Pattern matching correctness (71 tests passing) -- [x] Compression/decompression roundtrip tests -- [x] Suffix array tests with LCP -- [x] UTF-8 and byte-level handling -- [x] Documentation complete with examples -- [x] Code formatted and linted -- [x] All tests passing - ---- - -## Phase 9: Geometric Algorithms (7/7) ✅ COMPLETE -**Started:** 2025-11-16 -**Completed:** 2025-11-16 -**Priority:** LOW -**Module:** `modules/geometry/` -**Effort:** 1 session - -### Geometric Primitives (4/4) ✅ -- [x] `Point2D` - 2D point with distance, angle, CCW operations -- [x] `Interval1D` - 1D interval with intersection and containment -- [x] `Interval2D` - 2D interval using two Interval1D instances -- [x] `RectHV` - Axis-aligned rectangle with distance calculations - -### Geometric Algorithms (3/3) ✅ -- [x] `GrahamScan` - Graham scan convex hull algorithm -- [x] `ClosestPair` - Closest pair using divide-and-conquer -- [x] `FarthestPair` - Farthest pair using convex hull - -### Visualization (0/2) [Skipped - Optional] -- [ ] `Draw` - Basic drawing (feature-gated) - Deferred to Phase 11 -- [ ] `DrawListener` - Drawing events (feature-gated) - Deferred to Phase 11 - -### Completion Checklist -- [x] All 7 core files implemented (2 visualization files deferred to Phase 11) -- [x] Geometric calculations correct (77 unit tests passing) -- [x] Convex hull properties verified -- [x] Edge case testing (collinear points, single points, duplicates) -- [x] Documentation complete with examples (69 doc tests passing) -- [x] Code formatted and linted (0 clippy warnings with allows for algorithmic code) -- [x] All tests passing (146 total tests: 77 unit + 69 doc) - -### Key Implementation Details - -**Point2D:** -- Full geometric operations: distance, angle, polar coordinates -- CCW (counter-clockwise) test for orientation -- Multiple comparator functions (x_order, y_order, r_order, polar_order, atan2_order, distance_to_order) -- Validation: rejects NaN and infinite coordinates - -**Intervals:** -- Interval1D: 1D closed interval with intersection and containment checking -- Interval2D: Axis-aligned 2D rectangle using two Interval1D instances -- RectHV: Optimized rectangle for KD-tree algorithms with efficient distance calculations - -**Algorithms:** -- GrahamScan: O(n log n) convex hull using polar angle sorting -- ClosestPair: O(n log n) divide-and-conquer algorithm with merging -- FarthestPair: Uses convex hull + all-pairs checking on hull points - -### Testing -- 77 unit tests covering all geometric primitives and algorithms -- 69 doc tests ensuring documentation examples work -- Comprehensive edge case testing: collinear points, duplicates, single points, empty sets -- All geometric calculations verified for correctness - -### Notes -- Skipped Draw and DrawListener (visualization) - deferred to optional Phase 11 (Multimedia) -- All implementations follow textbook algorithms while using Rust idioms -- Used `Copy` trait for geometric primitives (Point2D, Interval1D, Interval2D, RectHV) for efficiency -- Clippy warnings for algorithmic code (range loops, manual memcpy) suppressed with module-level allows - ---- - -## Phase 10: Advanced Core Algorithms (12/15) ✅ CORE COMPLETE -**Started:** 2025-11-16 -**Completed:** 2025-11-16 -**Priority:** LOW -**Module:** `modules/advanced/` -**Effort:** 1 session - -### Linear Algebra (5/5) ✅ -- [x] `Complex` - Complex numbers with comprehensive arithmetic -- [x] `Vector` - Immutable d-dimensional Euclidean vectors -- [x] `SparseVector` - Sparse vector using HashMap -- [x] `Polynomial` - Polynomial with integer coefficients -- [x] `FFT` - Fast Fourier Transform (radix-2 Cooley-Tukey) - -### Linear Programming (3/3) ✅ -- [x] `GaussianElimination` - Gaussian elimination with partial pivoting -- [x] `GaussJordanElimination` - Gauss-Jordan elimination with RREF -- [x] `LinearProgramming` - Simplex algorithm with Bland's rule - -### Data Structures (2/2) ✅ -- [x] `SegmentTree` - Segment tree with lazy propagation -- [x] `FenwickTree` - Binary Indexed Tree (Fenwick tree) - -### Miscellaneous (2/5) [PARTIAL] -- [x] `ThreeSum` - Brute force O(n³) 3-sum -- [x] `ThreeSumFast` - Optimized O(n² log n) 3-sum -- [ ] `AllowFilter` - Allow filter (requires SET from searching) -- [ ] `BlockFilter` - Block filter (requires SET from searching) -- [ ] `TopM` - Top M elements (requires MinPQ, Transaction) - -### Completion Checklist -- [x] 12 core files implemented (3 deferred due to dependencies) -- [x] 119 unit tests passing -- [x] Numerical precision tests (EPSILON = 1e-8 to 1e-10) -- [x] FFT correctness (roundtrip, convolution) -- [x] Segment tree queries (RSQ, RMQ, lazy propagation) -- [x] Documentation complete with examples -- [x] Code formatted (cargo fmt) -- [x] Code linted (cargo clippy -D warnings) -- [x] All tests passing - -### Key Implementation Details - -**Linear Algebra:** -- **Complex:** Full support for arithmetic, transcendental functions (exp, sin, cos, tan) -- **Vector:** Immutable design with defensive copying, dot product, magnitude, direction -- **SparseVector:** HashMap-based storage, optimized dot product -- **Polynomial:** Integer coefficients, Horner's method for evaluation -- **FFT:** Radix-2 Cooley-Tukey algorithm, requires power-of-2 length - -**Linear Systems:** -- **GaussianElimination:** Partial pivoting for numerical stability, EPSILON = 1e-8 -- **GaussJordanElimination:** Reduced row echelon form, certificate of infeasibility -- **LinearProgramming:** Two-phase simplex, Bland's rule to prevent cycling, EPSILON = 1e-10 - -**Data Structures:** -- **SegmentTree:** Heap-based structure, lazy propagation for range updates -- **FenwickTree:** 1-indexed array, bit manipulation for O(log n) operations - -**Algorithms:** -- **ThreeSum:** Brute force triple-nested loops, O(n³) -- **ThreeSumFast:** Sorting + binary search, O(n² log n) - -### Testing -- 119 total tests (15 Complex, 17 Vector, 15 Polynomial, 13 FFT, 13 SparseVector, - 6 GaussianElimination, 7 GaussJordanElimination, 5 LinearProgramming, - 8 SegmentTree, 10 FenwickTree, 14 ThreeSum, 14 ThreeSumFast) -- Comprehensive edge case testing -- Numerical precision validation -- Panic tests for invalid inputs - -### Notes -- AllowFilter, BlockFilter, TopM deferred due to dependencies on fundamentals/searching modules -- All code passes clippy with `-D warnings` (strict mode) -- Uses `#[allow(non_snake_case)]` for matrix parameter `A` to match mathematical convention -- Uses `#[allow(clippy::needless_range_loop)]` where index-based access is clearer - ---- - -## Phase 11: Multimedia & Visualization (0/25+) [OPTIONAL] -**Priority:** OPTIONAL -**Module:** `modules/multimedia/` (new module) - -### Image Processing (0/3) -- [ ] `Picture` - Image manipulation -- [ ] `StdPicture` - Standard picture I/O -- [ ] `GrayscalePicture` - Grayscale images - -### Graphics (0/3) -- [ ] `StdDraw` - 2D drawing -- [ ] `Draw` - Drawing canvas -- [ ] `DrawListener` - Event handling - -### Audio (0/2) -- [ ] `StdAudio` - Audio playback -- [ ] `StdAudioStereo` - Stereo audio - -### Physics (0/2) -- [ ] `CollisionSystem` - Particle collisions -- [ ] `Particle` - Particle physics - -### Other (0/15+) -- [ ] Remaining utilities and multimedia features - -### Completion Checklist -- [ ] Multimedia features implemented -- [ ] Feature flags configured -- [ ] Wrapper APIs created -- [ ] Manual testing completed -- [ ] Documentation complete -- [ ] Optional CI tests - ---- - -## Files Skipped - -The following ~41 files are intentionally skipped: - -### Testing Utilities (use Cargo tools) -- `DoublingTest` -- `DoublingRatio` -- `RandomSeq` - -### System Utilities (use standard tools) -- `Cat` -- `BinaryDump` -- `HexDump` -- `PictureDump` - -### Redundant Variants -- Some "X" optimized variants where Rust implementation is naturally optimal -- Duplicate test clients - -### Moved to Optional -- ~25 multimedia files (Phase 11) - ---- - -## Summary Statistics - -| Category | Files | Completed | Percentage | -|----------|-------|-----------|------------| -| **Phase 0** | - | ✅ | **100%** ✅ | -| **Phase 1** | 8 | 6 | **75%** ✅ | -| **Phase 2** | 12 | 12 | **100%** ✅ | -| **Phase 3** | 18 | 18 | **100%** ✅ | -| **Phase 4** | 10 | 4 | **40%** ✅ Core Complete | -| **Phase 5** | QA | ✅ | **100%** ✅ | -| **Phase 6 (Searching)** | 21 | 21 | **100%** ✅ | -| **Phase 6 (Graphs)** | 13 | 13 | **100%** ✅ | -| **Phase 7A** | 12 | 12 | **100%** ✅ | -| **Phase 7B** | 18 | 18 | **100%** ✅ | -| **Phase 8** | 17 | 15 | **88%** ✅ Core Complete | -| **Phase 9** | 9 | 7 | **78%** ✅ Core Complete | -| **Phase 10** | 15 | 12 | **80%** ✅ Core Complete | -| **Phase 11** | 86 | 0 | **0%** (Optional) | -| **Total Core** | 160 | 145 | **90.6%** ✅ NEAR COMPLETE | - - ---- - -## Notes - -- Update this file after completing each file or phase -- Add notes about challenges or deviations from plan -- Track time estimates vs actual time -- Document any bugs or issues encountered -- Note any performance findings from benchmarks - ---- - -**Next Steps:** -1. ✅ All core algorithm phases complete (Phases 1-10) -2. ✅ Sorting (Phase 3): All 18 algorithms implemented -3. ✅ Searching (Phase 6): All 21 symbol table implementations complete -4. ✅ Graphs (Phases 6, 7A, 7B): All 43 graph algorithms implemented -5. ✅ String Processing (Phase 8): All core algorithms complete -6. 📝 Optional: Implement remaining Phase 7C graph applications (7 files) -7. 📝 Optional: Add performance benchmarks for all algorithms -8. 📝 Optional: Implement Phase 11 (Multimedia - 86 files, feature-gated) -9. 🎯 **PROJECT STATUS: 90.6% COMPLETE - PRODUCTION READY** diff --git a/PROJECT_COMPLETION_PLAN.md b/PROJECT_COMPLETION_PLAN.md deleted file mode 100644 index ec29164..0000000 --- a/PROJECT_COMPLETION_PLAN.md +++ /dev/null @@ -1,523 +0,0 @@ -# algs4-rust: Project Completion Plan - -**Created:** 2025-11-17 -**Current Progress:** 34/160 files (21.25% complete) -**Remaining Work:** 126 files (78.75%) -**Current Branch:** `claude/cleanup-markdown-files-019Z9wUdhNLLYec27fh6E99a` - ---- - -## 🎯 Executive Summary - -The algs4-rust project has a strong foundation with **986 tests passing** and **zero quality issues**. To reach completion, we need to implement **126 remaining files** across 5 major phases. With focused execution, the core project can be completed in **8-12 weeks** of dedicated work. - -### Current State -✅ **Strengths:** -- High code quality (0 clippy warnings, 0 formatting issues) -- Excellent test coverage (688 unit + 298 doc tests) -- Complete implementations: Fundamentals, String Processing, Geometry, Advanced Core -- Well-documented with comprehensive examples - -⚠️ **Gaps:** -- Sorting algorithms: 0/18 files (critical gap) -- Symbol tables: 7/20 files (needs completion) -- Graph algorithms: Missing shortest paths, MST, flow algorithms -- No performance benchmarks - ---- - -## 📊 Phase-by-Phase Roadmap - -### **Phase 3: Sorting Algorithms** ⭐ PRIORITY 1 -**Status:** 0/18 files (0% complete) -**Estimated Effort:** 12-16 hours -**Target:** Weeks 1-2 - -#### Why This First? -- **No dependencies** - can start immediately -- **Fundamental algorithms** - needed throughout the project -- **Easy to benchmark** - validate performance claims -- **High educational value** - core CS curriculum - -#### Implementation Plan - -**Week 1: Basic & Merge Sorts (8 files)** -- Session 1 (4 hours): Basic sorts - - Selection sort (O(n²)) - - Insertion sort (O(n²)) - - InsertionX (optimized with sentinel) - - BinaryInsertion (binary search for insertion) - - Shell sort (O(n^3/2)) - -- Session 2 (3 hours): Merge sorts - - Merge (top-down recursive) - - MergeBU (bottom-up iterative) - - MergeX (optimized with cutoff) - -**Week 2: Quick & Advanced Sorts (10 files)** -- Session 3 (4 hours): Quick sorts - - Quick (standard quicksort) - - Quick3way (3-way partitioning) - - QuickX (optimized) - - QuickBentleyMcIlroy (advanced 3-way) - -- Session 4 (5 hours): Advanced sorts - - Heap (heapsort using MaxPQ) - - LSD (least-significant-digit radix) - - MSD (most-significant-digit radix) - - InplaceMSD (in-place variant) - - Quick3string (3-way string sort) - - Inversions (count inversions) - -#### Deliverables -- [ ] All 18 sorting algorithms implemented -- [ ] Generic implementations using `Ord` trait -- [ ] 100+ unit tests covering edge cases -- [ ] Performance benchmarks vs `std::slice::sort()` -- [ ] Documentation with complexity analysis - ---- - -### **Phase 6: Complete Symbol Tables** ⭐ PRIORITY 2 -**Status:** 7/20 files (35% complete) -**Estimated Effort:** 13-18 hours -**Target:** Weeks 3-4 - -#### Already Complete ✅ -- SequentialSearchST -- BinarySearch, BinarySearchST -- BST (Binary Search Tree) -- RedBlackBST -- SeparateChainingHashST, LinearProbingHashST -- TrieSET, TrieST - -#### Remaining Work (13 files) - -**Week 3: Advanced Trees (2 files, 5 hours)** -- Session 5: AVLTreeST (AVL balanced tree) -- Session 6: BTree (B-tree for external storage) - -**Week 3-4: Patricia Tries (2 files, 4 hours)** -- Session 7: PatriciaSET (compact trie set) -- Session 8: PatriciaST (compact trie symbol table) - -**Week 4: Applications (7 files, 8 hours)** -- Session 9-10: Core apps - - FrequencyCounter (word frequency analysis) - - DeDup (remove duplicates) - - Count (count occurrences) -- Session 11: Advanced apps - - FileIndex (inverted index) - - LookupCSV (CSV database) - - LookupIndex (general lookup) - - KWIK (keyword in context) - -#### Deliverables -- [ ] All symbol table implementations complete -- [ ] Balanced tree invariants verified -- [ ] Application programs with real-world examples -- [ ] Performance comparison benchmarks - ---- - -### **Phase 7A: Shortest Paths & MST** ⭐ PRIORITY 3 -**Status:** 0/12 files -**Estimated Effort:** 17-21 hours -**Target:** Weeks 5-7 - -#### Shortest Paths (8 files, 11-14 hours) - -**Week 5: Single-Source Shortest Paths (4 files)** -- Session 12-13: Core algorithms - - DijkstraSP (single-source, non-negative weights) - - DijkstraUndirectedSP (undirected variant) - - BellmanFordSP (handles negative weights) - - AcyclicSP (DAG shortest paths) - - AcyclicLP (DAG longest paths) - -**Week 6: All-Pairs Shortest Paths (3 files)** -- Session 14-15: Advanced algorithms - - DijkstraAllPairsSP (all-pairs using Dijkstra) - - FloydWarshall (all-pairs with negative weights) - - TransitiveClosure (reachability) - -#### Minimum Spanning Trees (4 files, 6-7 hours) - -**Week 7: MST Algorithms** -- Session 16: Prim's variants - - LazyPrimMST (lazy implementation) - - PrimMST (eager with indexed PQ) -- Session 17: Union-Find based - - KruskalMST (using WeightedQuickUnionUF from Phase 2) - - BoruvkaMST (parallel MST algorithm) - -#### Deliverables -- [ ] All shortest path algorithms working -- [ ] Negative cycle detection in Bellman-Ford -- [ ] All MST algorithms verified -- [ ] Graph test files (tinyEWG.txt, mediumEWG.txt) -- [ ] Path reconstruction for all algorithms - ---- - -### **Phase 7B: Flow & Advanced Graph Analysis** -**Status:** 0/18 files -**Estimated Effort:** 20-25 hours -**Target:** Weeks 8-10 - -#### Cycles & Topological Sort (10 files, 10-12 hours) - -**Week 8: Cycle Detection** -- Cycle (undirected) -- DirectedCycle (directed) -- DirectedCycleX (non-recursive) -- EdgeWeightedDirectedCycle -- Eulerian cycles & paths (4 variants) - -**Week 8-9: Topological & Ordering** -- Topological (topological sort) -- DepthFirstOrder (pre/post/reverse-post) - -#### Strongly Connected Components (3 files, 3-4 hours) - -**Week 9: SCC Algorithms** -- KosarajuSharirSCC (two-pass DFS) -- TarjanSCC (single-pass with stack) -- GabowSCC (path-based) - -#### Bipartite & Flow (5 files, 7-9 hours) - -**Week 9-10: Bipartite** -- Bipartite (bipartite detection) -- BipartiteX (non-recursive variant) - -**Week 10: Maximum Flow** -- FlowEdge (flow edge data type) -- FlowNetwork (flow network structure) -- FordFulkerson (max flow / min cut) - -#### Deliverables -- [ ] All graph analysis algorithms complete -- [ ] Cycle detection for all graph types -- [ ] Topological sort with cycle detection -- [ ] SCC verification tests -- [ ] Max flow correctness tests - ---- - -### **Phase 7C: Graph Applications** (Optional) -**Status:** 0/7 files -**Estimated Effort:** 8-10 hours -**Target:** Week 11 (optional) - -#### Application Files -- BipartiteMatching -- HopcroftKarp -- GlobalMincut -- AssignmentProblem -- CPM (Critical Path Method) -- DegreesOfSeparation -- Arbitrage - -**Decision Point:** These are demonstration programs. Implement if time allows or if needed for completeness. - ---- - -### **Phase 11: Advanced & Deferred** (Optional) -**Status:** 0/6+ files -**Estimated Effort:** 6-8 hours -**Target:** Week 12 (optional) - -#### Deferred Priority Queue Variants (6 files) -- BinomialMinPQ -- FibonacciMinPQ -- IndexBinomialMinPQ -- IndexFibonacciMinPQ -- MultiwayMinPQ -- IndexMultiwayMinPQ - -**Decision Point:** These are complex data structures primarily for theoretical interest. Defer unless needed for advanced graph algorithms. - -#### Multimedia (25+ files) - NOT RECOMMENDED -**Reason:** Platform-dependent, heavy dependencies, limited educational value for algorithms focus. - ---- - -## 🗓️ 12-Week Timeline - -### **Weeks 1-2: Sorting** (18 files) -- Week 1: Basic & merge sorts (8 files) -- Week 2: Quick & advanced sorts (10 files) -- **Milestone:** Complete sorting phase, benchmarks running - -### **Weeks 3-4: Symbol Tables** (13 files) -- Week 3: AVL, B-tree, Patricia tries (4 files) -- Week 4: Applications (7 files) -- **Milestone:** Complete searching/symbol tables phase - -### **Weeks 5-7: Shortest Paths & MST** (12 files) -- Week 5: Single-source shortest paths (5 files) -- Week 6: All-pairs shortest paths (3 files) -- Week 7: MST algorithms (4 files) -- **Milestone:** Complete Phase 7A - -### **Weeks 8-10: Advanced Graph** (18 files) -- Week 8: Cycles & topological sort (10 files) -- Week 9: SCC algorithms (3 files) -- Week 10: Bipartite & flow (5 files) -- **Milestone:** Complete Phase 7B - -### **Week 11: Polish & Optional** -- Complete Phase 7C applications (7 files) - optional -- Add performance benchmarks -- Fix documentation warnings -- Create comprehensive examples - -### **Week 12: Release Preparation** -- Final QA review -- Update README with examples -- Create API documentation -- Prepare for crates.io (optional) - ---- - -## 🎯 Success Metrics - -### Code Quality (Current: ✅) -- [x] Zero clippy warnings (-D warnings mode) -- [x] Zero formatting issues -- [x] 100% public API documentation -- [ ] Performance benchmarks for all algorithms -- [ ] Property-based tests with `proptest` - -### Test Coverage (Current: 986 tests) -- [x] 688+ unit tests -- [x] 298+ doc tests -- [ ] 1200+ total tests (target) -- [ ] 100+ benchmark tests -- [ ] Integration tests for all modules - -### Documentation (Current: Good) -- [x] All public APIs documented -- [x] Code examples in docs -- [x] Complexity analysis -- [ ] Fix 22 rustdoc warnings -- [ ] Comprehensive README -- [ ] API usage guide - -### Performance (Current: Not benchmarked) -- [ ] Sorting: Compare to `std::slice::sort()` -- [ ] Symbol tables: Compare to `std::collections::HashMap`/`BTreeMap` -- [ ] Graphs: Verify algorithmic complexity -- [ ] Document performance characteristics - ---- - -## 🚀 Quick Start Next Session - -### Immediate Action: Start Phase 3 (Sorting) - -```bash -# 1. Verify clean state -cargo test --all -cargo clippy --all --all-targets -- -D warnings -cargo fmt --all --check - -# 2. Create new branch -git checkout -b claude/phase-3-sorting-$(date +%s) - -# 3. Create sorting module structure -mkdir -p modules/sorting/src/basic -mkdir -p modules/sorting/src/merge -mkdir -p modules/sorting/src/quick -mkdir -p modules/sorting/src/advanced - -# 4. Update Cargo.toml -cat > modules/sorting/Cargo.toml <<'EOF' -[package] -name = "algs4-sorting" -version = "0.1.0" -edition = "2021" - -[dependencies] - -[dev-dependencies] -EOF - -# 5. Create lib.rs -cat > modules/sorting/src/lib.rs <<'EOF' -//! Sorting algorithms from Algorithms, 4th Edition -//! -//! This module contains implementations of fundamental sorting algorithms. - -pub mod basic; -pub mod merge; -pub mod quick; -pub mod advanced; -EOF - -# 6. Start with Selection Sort -# Reference: https://github.com/kevin-wayne/algs4/blob/master/src/main/java/edu/princeton/cs/algs4/Selection.java -``` - -### First Implementation: Selection Sort - -```rust -// modules/sorting/src/basic/selection.rs - -//! Selection sort implementation. -//! -//! Selection sort is one of the simplest sorting algorithms. It repeatedly -//! finds the minimum element from the unsorted portion and puts it at the -//! beginning. -//! -//! # Performance -//! - Time complexity: O(n²) comparisons, O(n) swaps -//! - Space complexity: O(1) -//! - Stable: No -//! - In-place: Yes -//! -//! # Examples -//! ``` -//! use algs4_sorting::basic::selection_sort; -//! -//! let mut arr = vec![3, 1, 4, 1, 5, 9, 2, 6]; -//! selection_sort(&mut arr); -//! assert_eq!(arr, vec![1, 1, 2, 3, 4, 5, 6, 9]); -//! ``` -//! -//! **Reference:** - -/// Sorts the slice using selection sort. -pub fn selection_sort(arr: &mut [T]) { - let n = arr.len(); - for i in 0..n { - let mut min = i; - for j in (i + 1)..n { - if arr[j] < arr[min] { - min = j; - } - } - arr.swap(i, min); - } -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn test_empty() { - let mut arr: Vec = vec![]; - selection_sort(&mut arr); - assert_eq!(arr, vec![]); - } - - #[test] - fn test_single() { - let mut arr = vec![1]; - selection_sort(&mut arr); - assert_eq!(arr, vec![1]); - } - - #[test] - fn test_sorted() { - let mut arr = vec![1, 2, 3, 4, 5]; - selection_sort(&mut arr); - assert_eq!(arr, vec![1, 2, 3, 4, 5]); - } - - #[test] - fn test_reverse_sorted() { - let mut arr = vec![5, 4, 3, 2, 1]; - selection_sort(&mut arr); - assert_eq!(arr, vec![1, 2, 3, 4, 5]); - } - - #[test] - fn test_duplicates() { - let mut arr = vec![3, 1, 4, 1, 5, 9, 2, 6, 5]; - selection_sort(&mut arr); - assert_eq!(arr, vec![1, 1, 2, 3, 4, 5, 5, 6, 9]); - } - - #[test] - fn test_strings() { - let mut arr = vec!["dog", "cat", "apple", "zebra"]; - selection_sort(&mut arr); - assert_eq!(arr, vec!["apple", "cat", "dog", "zebra"]); - } -} -``` - ---- - -## 📋 Definition of Done (Each Phase) - -### Code Complete -- [ ] All files implemented -- [ ] All functions tested -- [ ] Edge cases handled -- [ ] Generic implementations where appropriate - -### Testing Complete -- [ ] Unit tests for all functions -- [ ] Doc tests with examples -- [ ] Integration tests (where applicable) -- [ ] All tests passing - -### Quality Complete -- [ ] `cargo fmt --all --check` passes -- [ ] `cargo clippy --all --all-targets -- -D warnings` passes -- [ ] `cargo test --all` passes -- [ ] No compilation warnings - -### Documentation Complete -- [ ] Public APIs documented -- [ ] Complexity analysis included -- [ ] Examples provided -- [ ] References to textbook - -### Review Complete -- [ ] Code reviewed -- [ ] PROGRESS.md updated -- [ ] Changes committed -- [ ] PR created (if applicable) - ---- - -## 🎓 Learning Resources - -### Reference Materials -- **Textbook:** *Algorithms, 4th Edition* by Sedgewick & Wayne -- **Website:** https://algs4.cs.princeton.edu/ -- **Java Source:** https://github.com/kevin-wayne/algs4 -- **Test Data:** https://algs4.cs.princeton.edu/code/ - -### Rust Resources -- **API Guidelines:** https://rust-lang.github.io/api-guidelines/ -- **Rust Book:** https://doc.rust-lang.org/book/ -- **Criterion Benchmarks:** https://github.com/bheisler/criterion.rs -- **Proptest:** https://github.com/proptest-rs/proptest - ---- - -## ✅ Completion Criteria - -The project is considered **COMPLETE** when: - -1. ✅ All 160 core files implemented (currently 34/160) -2. ✅ 1200+ tests passing (currently 986) -3. ✅ Zero clippy warnings -4. ✅ Zero formatting issues -5. ✅ Performance benchmarks for all major algorithms -6. ✅ Comprehensive documentation -7. ✅ README with getting started guide -8. ✅ Example programs demonstrating usage -9. ⚠️ Optional: Published to crates.io - ---- - -**Last Updated:** 2025-11-17 -**Next Milestone:** Complete Phase 3 (Sorting) by Week 2 -**Final Target:** 90% complete by Week 10, polish by Week 12 diff --git a/REVIEW_SUMMARY.md b/REVIEW_SUMMARY.md deleted file mode 100644 index a889b51..0000000 --- a/REVIEW_SUMMARY.md +++ /dev/null @@ -1,340 +0,0 @@ -# Review and Testing Summary - -**Date:** 2025-11-17 -**Branch:** `claude/review-and-test-01BeQu5243FGkjw3F41i75hC` -**Reviewer:** Claude Code Assistant - -## Overview - -This document summarizes the comprehensive review, testing, and quality assurance checks performed on the algs4-rust project. The review covered all implemented modules and identified and fixed various issues. - ---- - -## Review Process - -### 1. Codebase Exploration ✅ - -**Status:** Complete - -**Findings:** -- **7 workspace modules** implemented: fundamentals, sorting, searching, graphs, strings, geometry, advanced -- **~80 Rust source files** across all modules -- **13,417+ lines of code** added in the last 5 commits -- **Recent work:** Phases 6-10 (Graphs, Searching, Strings, Geometry, Advanced) - -**Project Structure:** -``` -algs4-rust/ -├── modules/ -│ ├── fundamentals/ ✅ Complete (Phases 1-2, 4-5) -│ ├── sorting/ ⚠️ Empty (Phase 3 - Not started) -│ ├── searching/ ✅ Core Complete (Phase 6) -│ ├── graphs/ ✅ Core Complete (Phase 6) -│ ├── strings/ ✅ Complete (Phase 8) -│ ├── geometry/ ✅ Core Complete (Phase 9) -│ └── advanced/ ✅ Core Complete (Phase 10) -``` - ---- - -### 2. Code Formatting ✅ - -**Status:** Complete - -**Tool:** `cargo fmt --all` - -**Issues Found:** 24 formatting violations - -**Fixes Applied:** -- Fixed trailing space alignment in struct field comments -- Fixed comment spacing (replaced double space with single space after inline comments) -- Fixed multi-line function parameter formatting -- Fixed collapsible if-else blocks -- Alphabetically sorted module imports in lib.rs files - -**Result:** ✅ All code now passes `cargo fmt --check` with zero violations - ---- - -### 3. Linting (Clippy) ✅ - -**Status:** Complete - -**Tool:** `cargo clippy --all --all-targets -- -D warnings` - -**Issues Found:** 35+ clippy warnings - -**Fixes Applied:** - -#### Category 1: Unused Code -- Removed unused imports in `run_length.rs` (std::io::{self, Read, Write}) -- Removed unused `radix` field from `BoyerMoore` struct -- Removed unused `radix` field from `KMP` struct -- Removed unused variable `m` in `boyer_moore.rs` -- Removed unused variable `n` in `kmp.rs` - -#### Category 2: Code Quality -- Replaced manual range checks with `Range::contains()` (5 instances in stdrandom.rs) -- Replaced `map_or(false, |x| x.is_some())` with `is_some_and(|x| x.is_some())` in trie_st.rs -- Collapsed nested if statements (2 instances) -- Fixed needless range loops to use iterators (2 instances in kmp.rs and rabin_karp.rs) -- Changed `vec![]` to array `[]` where appropriate (2 instances for sorted test data) - -#### Category 3: Debug Implementations -- Added `#[derive(Debug)]` to: - - `Huffman` struct - - `LZW` struct - - `RunLength` struct - -#### Category 4: False Positives (Suppressed with #[allow]) -- Added `#[allow(clippy::only_used_in_recursion)]` for recursive helper methods in: - - `red_black_bst.rs` (2 methods) - - `nfa.rs` (1 method) -- Added `#[allow(clippy::module_inception)]` for suffix_array module - -#### Category 5: API Fixes -- Fixed approximate constant (replaced `3.14` with `std::f64::consts::PI`) -- Removed useless comparisons (`sa.lcp(i) >= 0` where lcp returns usize) - -**Result:** ✅ All code now passes `cargo clippy --all --all-targets -- -D warnings` with zero warnings - ---- - -### 4. Unit Tests ✅ - -**Status:** Complete - -**Tool:** `cargo test --all` - -**Test Results:** -``` -Module | Unit Tests | Doc Tests | Total --------------------|------------|-----------|------- -fundamentals | 119 | 0 | 119 -searching | 177 | 0 | 177 -sorting | 0 | 0 | 0 -graphs | 79 | 72 | 151 -strings | 117 | 71 | 188 -geometry | 77 | 69 | 146 -advanced | 119 | 86 | 205 --------------------|------------|-----------|------- -TOTAL | 688 | 298 | 986 -``` - -**Doc Test Issues Fixed:** -1. **segment_tree.rs** (2 issues): - - Added `mut` keyword to tree variable in RSQ example - - Added `mut` keyword to tree variable in RMQ example - -2. **vector.rs** (1 issue): - - Fixed floating-point precision in direction() test - - Changed `assert_eq!` to approximate equality checks with epsilon - -**Result:** ✅ All 986 tests passing (688 unit tests + 298 doc tests) - ---- - -### 5. Documentation Coverage ✅ - -**Status:** Complete - -**Tool:** `cargo doc --all --no-deps` - -**Issues Found:** 22 documentation warnings - -**Warning Categories:** -- 9 warnings: Unresolved links to `i` (array indexing in doc comments) -- 2 warnings: Unresolved links to `j` -- 2 warnings: Unresolved links to `k` -- 3 warnings: Unresolved links to future implementations (`BinomialMinPQ`, `FibonacciMinPQ`, `MultiwayMinPQ`) -- 2 warnings: Empty Rust code blocks - -**Status:** These are minor warnings that don't affect documentation generation. They can be addressed in a future cleanup pass. - -**Result:** ✅ Documentation builds successfully and is viewable at `target/doc/index.html` - ---- - -### 6. Project Status Review ✅ - -**Overall Progress:** -- **Total Core Files:** 160 -- **Files Completed:** 34 -- **Completion Rate:** 21.25% - -**Phase-by-Phase Status:** - -| Phase | Name | Files | Status | Percentage | -|-------|------|-------|--------|------------| -| 0 | Project Foundation | - | ✅ Complete | 100% | -| 1 | Core I/O & Basic Types | 6/8 | ✅ Core Complete | 75% | -| 2 | Collections & Union-Find | 12/12 | ✅ Complete | 100% | -| 3 | Sorting Algorithms | 0/18 | ❌ Not Started | 0% | -| 4 | Priority Queues | 4/10 | ✅ Core Complete | 40% | -| 5 | Testing & QA | - | ✅ Complete | 100% | -| 6 | Searching & Symbol Tables | 7/20 | ✅ Partial | 35% | -| 6 | Graph Fundamentals | 13/18 | ✅ Core Complete | 72% | -| 8 | String Processing | 14/14 | ✅ Complete | 100% | -| 9 | Geometric Algorithms | 7/9 | ✅ Core Complete | 78% | -| 10 | Advanced Core Algorithms | 12/15 | ✅ Core Complete | 80% | -| 11 | Multimedia (Optional) | 0/25+ | ❌ Not Started | 0% | - -**Key Achievements:** -1. ✅ **All tests passing** across all implemented modules -2. ✅ **Zero clippy warnings** with strict `-D warnings` mode -3. ✅ **Zero formatting issues** with rustfmt -4. ✅ **Comprehensive documentation** with working examples -5. ✅ **Strong test coverage** with 986 total tests - ---- - -## Files Modified During Review - -**Total:** 27 files - -### Formatting Fixes (24 files) -- modules/graphs/src/*.rs (13 files) -- modules/searching/src/*.rs (2 files) -- modules/strings/src/**/*.rs (7 files) -- modules/fundamentals/src/io/*.rs (2 files) - -### Code Quality Fixes (27 files - includes all formatting fixes plus) -- modules/advanced/src/segment_tree.rs (doc test fix) -- modules/advanced/src/vector.rs (doc test fix) -- modules/strings/src/compression/*.rs (Debug derives) - ---- - -## Known Issues & Technical Debt - -### Documentation Warnings (Low Priority) -- **22 warnings** in rustdoc output -- Mostly unresolved links due to array notation in comments -- Can be fixed by escaping brackets: `a\[i\]` instead of `a[i]` -- **Recommendation:** Address in future documentation cleanup pass - -### Module Dependencies -Several files deferred due to missing dependencies: -- **Phase 4:** 6 advanced priority queues (BinomialMinPQ, FibonacciMinPQ, etc.) - deferred to Phase 11 -- **Phase 6:** 5 graph utilities (SymbolGraph, GraphGenerator, etc.) - deferred to Phase 7C -- **Phase 10:** 3 files (AllowFilter, BlockFilter, TopM) - require SET from searching module - ---- - -## Recommendations - -### Immediate Next Steps - -1. **Commit Current Changes** ✅ - ```bash - git add -A - git commit -m "fix: resolve all formatting and clippy issues, fix failing doctests" - git push -u origin claude/review-and-test-01BeQu5243FGkjw3F41i75hC - ``` - -2. **Update PROGRESS.md** ✅ - - Document the review session - - Update test counts - - Note all fixes applied - -3. **Create PR** (if ready for review) - - Title: "Phase 6-10 Implementation + QA Review" - - Include this REVIEW_SUMMARY.md in the PR description - -### Future Work Priority - -#### Priority 1: Complete Core Symbol Tables (Phase 6 - Searching) -**Missing:** 13/20 files -- SequentialSearchST ✅ (done) -- BinarySearch ✅ (done) -- BinarySearchST ✅ (done) -- BST ✅ (done) -- RedBlackBST ✅ (done) -- SeparateChainingHashST ✅ (done) -- LinearProbingHashST ✅ (done) -- TrieSET ✅ (done) -- TrieST ✅ (done) -- AVLTreeST ❌ -- BTree ❌ -- PatriciaSET ❌ -- PatriciaST ❌ -- Applications (7 files) ❌ - -**Reason:** These are fundamental data structures used throughout the rest of the project. - -#### Priority 2: Implement Sorting Algorithms (Phase 3) -**Missing:** 18/18 files -- Basic sorts (Selection, Insertion, Shell) -- Merge sorts (Merge, MergeBU, MergeX) -- Quick sorts (Quick, Quick3way, QuickX) -- Others (Heap, LSD, MSD, Quick3string) - -**Reason:** No dependencies, can be implemented independently. - -#### Priority 3: Complete Graph Algorithms (Phase 7) -**Missing:** Advanced graph algorithms -- Shortest paths (Dijkstra, Bellman-Ford, etc.) -- Minimum spanning trees (Prim, Kruskal, Boruvka) -- Network flow (Ford-Fulkerson, etc.) -- Topological sort, strongly connected components - -**Reason:** Builds on Phase 6 graph fundamentals. - -#### Priority 4: Polish & Release -- Fix remaining documentation warnings -- Add benchmarks for performance comparison -- Create usage examples -- Write comprehensive README -- Publish to crates.io (if desired) - ---- - -## Quality Metrics - -### Test Coverage -- **986 total tests** (688 unit + 298 doc) -- **100% of implemented code** has tests -- **Edge cases covered:** empty inputs, single elements, large datasets, boundary conditions -- **Error cases tested:** panics verified with `#[should_panic]` - -### Code Quality -- ✅ **Zero clippy warnings** (strict mode with `-D warnings`) -- ✅ **Zero formatting issues** (rustfmt compliant) -- ✅ **Zero compilation warnings** -- ✅ **100% of public APIs documented** with examples -- ✅ **Consistent naming conventions** following Rust API guidelines - -### Performance -- **Not yet benchmarked** - recommend adding criterion benchmarks -- **Algorithms match textbook complexity** - O(log n), O(n log n), etc. -- **Zero-cost abstractions** - Rust's ownership system provides safety without runtime overhead - ---- - -## Conclusion - -The algs4-rust project is in excellent shape: - -✅ **All implemented code is high quality** -- Zero linting issues -- Zero formatting issues -- 100% tests passing -- Comprehensive documentation - -✅ **Strong foundation established** -- 34 files completed across 7 modules -- Core data structures implemented -- Well-tested and documented - -⚠️ **Work remains for complete coverage** -- 126 files still to implement (79% remaining) -- Priority: Sorting (Phase 3) and Searching (Phase 6 completion) -- Optional: Multimedia features (Phase 11) - -**Recommendation:** The codebase is ready for continued development. Focus on Phase 3 (Sorting) next as it has no dependencies and will complete a major algorithmic category. - ---- - -**Review Completed:** 2025-11-17 -**Reviewer:** Claude Code Assistant -**Status:** ✅ APPROVED FOR CONTINUED DEVELOPMENT diff --git a/START_PHASE3.md b/START_PHASE3.md deleted file mode 100644 index 18e4c59..0000000 --- a/START_PHASE3.md +++ /dev/null @@ -1,434 +0,0 @@ -# Quick Start Guide - Phase 3: Sorting Algorithms - -**Status:** Ready to Start -**Priority:** HIGH -**Module:** `modules/sorting/` -**Files:** 18 sorting algorithms -**Estimated effort:** 2-3 sessions -**Last Updated:** 2025-11-15 - ---- - -## 🎯 Phase 3 Overview - -Implement 18 sorting algorithms from *Algorithms, 4th Edition*. This phase covers fundamental sorting techniques that are foundational for computer science education and practical applications. - -### Why Phase 3 Next? - -1. **Natural progression** - Heap sort uses priority queues from Phase 4 -2. **Independent module** - No dependencies on unimplemented phases -3. **Foundational algorithms** - Essential for many later algorithms -4. **Classic CS curriculum** - Core algorithms every programmer should know -5. **Testing utilities** - Provides sorting utilities needed for other phases - ---- - -## 📦 Files to Implement (18 Total) - -### Basic Sorts (5 files) -Simple sorting algorithms, primarily for educational purposes: - -1. **Selection.rs** - Selection sort (O(n²) comparisons, O(n) swaps) -2. **Insertion.rs** - Insertion sort (O(n²) average, O(n) best case) -3. **InsertionX.rs** - Insertion with sentinel optimization -4. **BinaryInsertion.rs** - Binary search for insertion point -5. **Shell.rs** - Shellsort with h-sorted subsequences - -### Merge Sorts (3 files) -Divide-and-conquer sorting with guaranteed O(n log n): - -6. **Merge.rs** - Top-down mergesort (recursive) -7. **MergeBU.rs** - Bottom-up mergesort (iterative) -8. **MergeX.rs** - Optimized merge with cutoff to insertion sort - -### Quick Sorts (4 files) -In-place sorting with expected O(n log n): - -9. **Quick.rs** - Standard quicksort with partitioning -10. **Quick3way.rs** - 3-way partitioning for duplicate keys -11. **QuickX.rs** - Optimized with median-of-3 partitioning -12. **QuickBentleyMcIlroy.rs** - Bentley-McIlroy 3-way partitioning - -### Other Sorts (6 files) -Specialized sorting algorithms: - -13. **Heap.rs** - Heapsort using sink operations -14. **LSD.rs** - LSD radix sort for fixed-length strings -15. **MSD.rs** - MSD radix sort with recursive partitioning -16. **InplaceMSD.rs** - In-place MSD radix sort -17. **Quick3string.rs** - 3-way string quicksort -18. **Inversions.rs** - Count inversions using mergesort - ---- - -## 🏗️ Implementation Strategy - -### Step 1: Module Setup - -```bash -# Create module structure -mkdir -p modules/sorting/src/basic -mkdir -p modules/sorting/src/merge -mkdir -p modules/sorting/src/quick -mkdir -p modules/sorting/src/other - -# Update lib.rs -# Add: pub mod basic; pub mod merge; pub mod quick; pub mod other; -``` - -### Step 2: Implementation Order - -**Recommended order (easiest to hardest):** - -1. Start with **basic sorts** (Selection, Insertion) - simplest implementations -2. Move to **merge sorts** (Merge, MergeBU) - introduce recursion -3. Implement **quick sorts** (Quick, Quick3way) - partitioning technique -4. Add **specialized sorts** (Heap, LSD, MSD) - more complex algorithms -5. Finish with **optimizations** (InsertionX, MergeX, QuickX) - refinements - -### Step 3: Common Patterns - -**All sorting functions should:** -- Accept `&mut [T]` where `T: Ord` -- Sort in-place (except merge sort auxiliary array) -- Be generic over any ordered type -- Include comprehensive tests -- Have doc examples - -**Example function signature:** -```rust -/// Sorts the slice using selection sort. -/// -/// Time complexity: O(n²) -/// Space complexity: O(1) -/// -/// # Examples -/// ``` -/// use algs4_sorting::basic::selection_sort; -/// -/// let mut arr = vec![3, 1, 4, 1, 5]; -/// selection_sort(&mut arr); -/// assert_eq!(arr, vec![1, 1, 3, 4, 5]); -/// ``` -pub fn selection_sort(arr: &mut [T]) { - // implementation -} -``` - ---- - -## 📝 Implementation Template - -### Basic File Structure - -```rust -//! [Algorithm Name] sorting implementation. -//! -//! [Description of algorithm] -//! -//! # Performance -//! - Time complexity: [Big-O notation] -//! - Space complexity: [Big-O notation] -//! - Stable: [Yes/No] -//! -//! # Examples -//! ``` -//! use algs4_sorting::basic::selection_sort; -//! let mut arr = vec![3, 1, 4, 1, 5]; -//! selection_sort(&mut arr); -//! assert_eq!(arr, vec![1, 1, 3, 4, 5]); -//! ``` -//! -//! **Reference:** - -/// Sorts the slice using [algorithm name]. -pub fn [algorithm_name](arr: &mut [T]) { - // implementation -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn test_empty() { - let mut arr: Vec = vec![]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec![]); - } - - #[test] - fn test_single() { - let mut arr = vec![1]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec![1]); - } - - #[test] - fn test_sorted() { - let mut arr = vec![1, 2, 3, 4, 5]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec![1, 2, 3, 4, 5]); - } - - #[test] - fn test_reverse_sorted() { - let mut arr = vec![5, 4, 3, 2, 1]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec![1, 2, 3, 4, 5]); - } - - #[test] - fn test_duplicates() { - let mut arr = vec![3, 1, 4, 1, 5, 9, 2, 6, 5]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec![1, 1, 2, 3, 4, 5, 5, 6, 9]); - } - - #[test] - fn test_strings() { - let mut arr = vec!["dog", "cat", "apple", "zebra"]; - [algorithm_name](&mut arr); - assert_eq!(arr, vec!["apple", "cat", "dog", "zebra"]); - } -} -``` - ---- - -## 🧪 Testing Guidelines - -### Required Tests for Each Sort - -1. **Empty array** - Should handle gracefully -2. **Single element** - No changes needed -3. **Already sorted** - Best case performance -4. **Reverse sorted** - Worst case for some algorithms -5. **Random data** - Typical use case -6. **Duplicates** - Many duplicate values -7. **Strings** - Test with different types -8. **Large dataset** - Performance verification (100-1000 elements) - -### Stability Testing (for stable sorts) - -```rust -#[test] -fn test_stability() { - #[derive(Debug, PartialEq, Eq)] - struct Item { key: i32, value: char } - - impl Ord for Item { - fn cmp(&self, other: &Self) -> std::cmp::Ordering { - self.key.cmp(&other.key) - } - } - - impl PartialOrd for Item { - fn partial_cmp(&self, other: &Self) -> Option { - Some(self.cmp(other)) - } - } - - let mut arr = vec![ - Item { key: 2, value: 'a' }, - Item { key: 1, value: 'b' }, - Item { key: 2, value: 'c' }, - ]; - - stable_sort(&mut arr); - - // Check that items with equal keys maintain relative order - assert_eq!(arr[1].value, 'a'); - assert_eq!(arr[2].value, 'c'); -} -``` - ---- - -## 📚 Reference Materials - -### Textbook Sections -- **Section 2.1:** Elementary Sorts (Selection, Insertion, Shell) -- **Section 2.2:** Mergesort -- **Section 2.3:** Quicksort -- **Section 2.4:** Priority Queues (Heapsort) -- **Section 2.5:** Applications -- **Section 5.1:** String Sorts (LSD, MSD, 3-way quicksort) - -### Java Source Code -```bash -# Base URL for Java implementations -https://github.com/kevin-wayne/algs4/tree/master/src/main/java/edu/princeton/cs/algs4 - -# Example files: -# Selection.java, Insertion.java, Shell.java -# Merge.java, MergeBU.java, MergeX.java -# Quick.java, Quick3way.java, QuickX.java -# Heap.java, LSD.java, MSD.java -``` - -### Online Resources -- Textbook website: https://algs4.cs.princeton.edu/ -- Sorting visualizations: https://algs4.cs.princeton.edu/20sorting -- Data files: https://algs4.cs.princeton.edu/21elementary (tiny.txt, words3.txt) - ---- - -## 🚀 Quick Commands - -```bash -# Create sorting module -cd modules/sorting - -# Run tests for specific sort -cargo test -p algs4-sorting selection - -# Run all sorting tests -cargo test -p algs4-sorting - -# Check clippy -cargo clippy -p algs4-sorting -- -D warnings - -# Build documentation -cargo doc -p algs4-sorting --open - -# Format code -cargo fmt --all -``` - ---- - -## 💡 Implementation Tips - -### Tip 1: Start Simple -Begin with Selection and Insertion sorts - they're the simplest and will help you establish patterns for the rest. - -### Tip 2: Use Helper Functions -Many sorts share common operations: -```rust -// Swap helper -fn swap(arr: &mut [T], i: usize, j: usize) { - arr.swap(i, j); -} - -// Less-than comparison -fn less(arr: &[T], i: usize, j: usize) -> bool { - arr[i] < arr[j] -} - -// Check if sorted (for testing) -fn is_sorted(arr: &[T]) -> bool { - arr.windows(2).all(|w| w[0] <= w[1]) -} -``` - -### Tip 3: Mergesort Needs Auxiliary Array -```rust -pub fn merge_sort(arr: &mut [T]) { - let mut aux = arr.to_vec(); - merge_sort_helper(arr, &mut aux, 0, arr.len()); -} - -fn merge_sort_helper( - arr: &mut [T], - aux: &mut [T], - lo: usize, - hi: usize, -) { - // recursive implementation -} -``` - -### Tip 4: Quicksort Partitioning -```rust -fn partition(arr: &mut [T], lo: usize, hi: usize) -> usize { - let pivot = lo; - let mut i = lo + 1; - let mut j = hi; - - loop { - while i <= hi && arr[i] <= arr[pivot] { i += 1; } - while j > lo && arr[j] >= arr[pivot] { j -= 1; } - if i >= j { break; } - arr.swap(i, j); - } - arr.swap(pivot, j); - j -} -``` - ---- - -## ✅ Quality Checklist - -Before committing each sort: - -- [ ] Function is generic over `T: Ord` -- [ ] Sorts in-place (except merge sort) -- [ ] Handles empty and single-element arrays -- [ ] All 8 required tests pass -- [ ] Clippy clean with `-D warnings` -- [ ] Doc comment with complexity analysis -- [ ] Doc test example works -- [ ] Code formatted -- [ ] Stability documented (if applicable) - ---- - -## 📊 Progress Tracking - -After completing each file: - -1. Update PROGRESS.md - mark file as `[x]` complete -2. Update completion count (e.g., "5/18 complete") -3. Commit with descriptive message: - ```bash - git commit -m "feat(sorting): implement Selection and Insertion sorts (2/18)" - ``` - ---- - -## 🎯 Success Criteria - -Phase 3 is complete when: - -- ✅ All 18 sorting algorithms implemented -- ✅ Comprehensive test suite (144+ tests minimum, 8 per algorithm) -- ✅ Zero clippy warnings -- ✅ Complete documentation with examples -- ✅ Complexity analysis for each algorithm -- ✅ Stability documented where applicable -- ✅ PROGRESS.md updated -- ✅ Session summary created - ---- - -## 🆘 Getting Help - -If you encounter issues: - -1. **Check the Java source:** - ```bash - curl https://raw.githubusercontent.com/kevin-wayne/algs4/master/src/main/java/edu/princeton/cs/algs4/Selection.java - ``` - -2. **Review existing implementations:** - ```bash - # Look at priority queue patterns - cat modules/fundamentals/src/priority_queue/max_pq.rs - ``` - -3. **Consult textbook:** - - Online: https://algs4.cs.princeton.edu/20sorting - - Visualizations help understand the algorithms - -4. **Test incrementally:** - ```bash - cargo test -p algs4-sorting selection -- --nocapture - ``` - ---- - -**Ready to start Phase 3! 🚀** - -Begin with Selection and Insertion sorts for a solid foundation. diff --git a/modules/advanced/Cargo.toml b/modules/advanced/Cargo.toml index b016a3d..a805a47 100644 --- a/modules/advanced/Cargo.toml +++ b/modules/advanced/Cargo.toml @@ -10,8 +10,8 @@ categories.workspace = true description = "Advanced algorithms from Algorithms 4th Edition" [dependencies] -algs4-fundamentals = { path = "../fundamentals" } -algs4-searching = { path = "../searching" } -algs4-graphs = { path = "../graphs" } +algs4-fundamentals = { version = "0.1.0", path = "../fundamentals" } +algs4-searching = { version = "0.1.0", path = "../searching" } +algs4-graphs = { version = "0.1.0", path = "../graphs" } [dev-dependencies] diff --git a/modules/advanced/src/allow_filter.rs b/modules/advanced/src/allow_filter.rs index 4c5fa50..aa3dbb0 100644 --- a/modules/advanced/src/allow_filter.rs +++ b/modules/advanced/src/allow_filter.rs @@ -1,8 +1,8 @@ -///! Allow filter application - prints words from stdin that are in the allowlist. -///! -///! Reads an allowlist of words from a file, then reads words from standard input -///! and prints all those words that appear in the allowlist. Useful for demonstrating -///! set data structures and membership testing. +//! Allow filter application - prints words from stdin that are in the allowlist. +//! +//! Reads an allowlist of words from a file, then reads words from standard input +//! and prints all those words that appear in the allowlist. Useful for demonstrating +//! set data structures and membership testing. use std::collections::HashSet; use std::fs::File; use std::io::{self, BufRead, BufReader}; diff --git a/modules/advanced/src/block_filter.rs b/modules/advanced/src/block_filter.rs index 0a645f7..63613d3 100644 --- a/modules/advanced/src/block_filter.rs +++ b/modules/advanced/src/block_filter.rs @@ -1,8 +1,8 @@ -///! Block filter application - prints words from stdin that are NOT in the blocklist. -///! -///! Reads a blocklist of words from a file, then reads words from standard input -///! and prints all those words that do NOT appear in the blocklist. Useful for -///! filtering out common words or spam. +//! Block filter application - prints words from stdin that are NOT in the blocklist. +//! +//! Reads a blocklist of words from a file, then reads words from standard input +//! and prints all those words that do NOT appear in the blocklist. Useful for +//! filtering out common words or spam. use std::collections::HashSet; use std::fs::File; use std::io::{self, BufRead, BufReader}; diff --git a/modules/advanced/src/lib.rs b/modules/advanced/src/lib.rs index c59ea08..35381fb 100644 --- a/modules/advanced/src/lib.rs +++ b/modules/advanced/src/lib.rs @@ -48,8 +48,11 @@ pub mod three_sum; pub mod three_sum_fast; // Applications and utilities +/// Allow filter - prints words that are in an allowlist. pub mod allow_filter; +/// Block filter - prints words that are NOT in a blocklist. pub mod block_filter; +/// TopM - finds the M largest items from a stream. pub mod top_m; // Re-export main types for convenience diff --git a/modules/advanced/src/top_m.rs b/modules/advanced/src/top_m.rs index b69e4b8..5b2cf4e 100644 --- a/modules/advanced/src/top_m.rs +++ b/modules/advanced/src/top_m.rs @@ -1,9 +1,8 @@ -///! TopM - Find the M largest items from a stream. -///! -///! Reads a sequence of transactions from standard input and prints the M largest ones -///! to standard output. Uses a minimum priority queue of size at most M+1 to identify -///! the M largest transactions efficiently. -use std::fmt::Display; +//! TopM - Find the M largest items from a stream. +//! +//! Reads a sequence of transactions from standard input and prints the M largest ones +//! to standard output. Uses a minimum priority queue of size at most M+1 to identify +//! the M largest transactions efficiently. /// Finds the top M items from a stream using a min priority queue. /// diff --git a/modules/fundamentals/src/util/transaction.rs b/modules/fundamentals/src/util/transaction.rs index 029ae6e..34c2947 100644 --- a/modules/fundamentals/src/util/transaction.rs +++ b/modules/fundamentals/src/util/transaction.rs @@ -1,7 +1,7 @@ -///! Transaction data type for commercial transactions. -///! -///! An immutable data type representing a commercial transaction -///! with a customer name, date, and amount. +//! Transaction data type for commercial transactions. +//! +//! An immutable data type representing a commercial transaction +//! with a customer name, date, and amount. use std::cmp::Ordering; use std::fmt; use std::hash::{Hash, Hasher}; diff --git a/modules/geometry/Cargo.toml b/modules/geometry/Cargo.toml index 93ec0ef..7f0f480 100644 --- a/modules/geometry/Cargo.toml +++ b/modules/geometry/Cargo.toml @@ -10,6 +10,6 @@ categories.workspace = true description = "Geometric algorithms from Algorithms 4th Edition" [dependencies] -algs4-fundamentals = { path = "../fundamentals" } +algs4-fundamentals = { version = "0.1.0", path = "../fundamentals" } [dev-dependencies] diff --git a/modules/graphs/src/digraph_generator.rs b/modules/graphs/src/digraph_generator.rs index 56af090..ca8d48c 100644 --- a/modules/graphs/src/digraph_generator.rs +++ b/modules/graphs/src/digraph_generator.rs @@ -6,6 +6,7 @@ use crate::digraph::Digraph; use rand::Rng; /// Utilities for generating random directed graphs. +#[derive(Debug)] pub struct DigraphGenerator; impl DigraphGenerator { diff --git a/modules/graphs/src/graph_generator.rs b/modules/graphs/src/graph_generator.rs index 49e69ed..1c88805 100644 --- a/modules/graphs/src/graph_generator.rs +++ b/modules/graphs/src/graph_generator.rs @@ -6,6 +6,7 @@ use crate::graph::Graph; use rand::Rng; /// Utilities for generating random undirected graphs. +#[derive(Debug)] pub struct GraphGenerator; impl GraphGenerator { @@ -369,7 +370,7 @@ impl GraphGenerator { /// } /// ``` pub fn regular(v: usize, k: usize) -> Graph { - if v * k % 2 != 0 { + if !(v * k).is_multiple_of(2) { panic!("v * k must be even"); } if k >= v { diff --git a/modules/graphs/src/symbol_digraph.rs b/modules/graphs/src/symbol_digraph.rs index bb0b225..79882a0 100644 --- a/modules/graphs/src/symbol_digraph.rs +++ b/modules/graphs/src/symbol_digraph.rs @@ -1,7 +1,7 @@ -///! Symbol digraph - directed graph with string vertex names. -///! -///! Provides a wrapper around the Digraph data type that allows vertices to be -///! identified by arbitrary strings rather than integers. +//! Symbol digraph - directed graph with string vertex names. +//! +//! Provides a wrapper around the Digraph data type that allows vertices to be +//! identified by arbitrary strings rather than integers. use crate::digraph::Digraph; use std::collections::HashMap; use std::fs::File; diff --git a/modules/graphs/src/symbol_graph.rs b/modules/graphs/src/symbol_graph.rs index 2d3abd8..827ef3a 100644 --- a/modules/graphs/src/symbol_graph.rs +++ b/modules/graphs/src/symbol_graph.rs @@ -1,7 +1,7 @@ -///! Symbol graph - undirected graph with string vertex names. -///! -///! Provides a wrapper around the Graph data type that allows vertices to be -///! identified by arbitrary strings rather than integers. +//! Symbol graph - undirected graph with string vertex names. +//! +//! Provides a wrapper around the Graph data type that allows vertices to be +//! identified by arbitrary strings rather than integers. use crate::graph::Graph; use std::collections::HashMap; use std::fs::File; diff --git a/modules/searching/Cargo.toml b/modules/searching/Cargo.toml index 4bd3851..03be2aa 100644 --- a/modules/searching/Cargo.toml +++ b/modules/searching/Cargo.toml @@ -10,6 +10,6 @@ categories.workspace = true description = "Searching algorithms and symbol tables from Algorithms 4th Edition" [dependencies] -algs4-fundamentals = { path = "../fundamentals" } +algs4-fundamentals = { version = "0.1.0", path = "../fundamentals" } [dev-dependencies] diff --git a/modules/searching/modules/sorting/src/lib.rs b/modules/searching/modules/sorting/src/lib.rs deleted file mode 100644 index e69de29..0000000 diff --git a/modules/sorting/Cargo.toml b/modules/sorting/Cargo.toml index 5922900..0909738 100644 --- a/modules/sorting/Cargo.toml +++ b/modules/sorting/Cargo.toml @@ -10,6 +10,6 @@ categories.workspace = true description = "Sorting algorithms from Algorithms 4th Edition" [dependencies] -algs4-fundamentals = { path = "../fundamentals" } +algs4-fundamentals = { version = "0.1.0", path = "../fundamentals" } [dev-dependencies] diff --git a/modules/strings/Cargo.toml b/modules/strings/Cargo.toml index 243e7ec..6999b33 100644 --- a/modules/strings/Cargo.toml +++ b/modules/strings/Cargo.toml @@ -10,7 +10,7 @@ categories.workspace = true description = "String processing algorithms from Algorithms 4th Edition" [dependencies] -algs4-fundamentals = { path = "../fundamentals" } -algs4-searching = { path = "../searching" } +algs4-fundamentals = { version = "0.1.0", path = "../fundamentals" } +algs4-searching = { version = "0.1.0", path = "../searching" } [dev-dependencies] diff --git a/modules/strings/src/substring/longest_common_substring.rs b/modules/strings/src/substring/longest_common_substring.rs index bbced2f..4e4c02c 100644 --- a/modules/strings/src/substring/longest_common_substring.rs +++ b/modules/strings/src/substring/longest_common_substring.rs @@ -1,7 +1,7 @@ -///! Longest common substring using suffix arrays. -///! -///! Computes the longest substring that appears in two given strings -///! using suffix array data structure. +//! Longest common substring using suffix arrays. +//! +//! Computes the longest substring that appears in two given strings +//! using suffix array data structure. use crate::suffix_array::suffix_array::SuffixArray; /// Finds the longest common substring between two strings. diff --git a/modules/strings/src/substring/longest_repeated_substring.rs b/modules/strings/src/substring/longest_repeated_substring.rs index fe3dc3d..e9f9cef 100644 --- a/modules/strings/src/substring/longest_repeated_substring.rs +++ b/modules/strings/src/substring/longest_repeated_substring.rs @@ -1,7 +1,7 @@ -///! Longest repeated substring using suffix arrays. -///! -///! Computes the longest substring that appears at least twice in a given string -///! using the suffix array data structure and LCP (longest common prefix) array. +//! Longest repeated substring using suffix arrays. +//! +//! Computes the longest substring that appears at least twice in a given string +//! using the suffix array data structure and LCP (longest common prefix) array. use crate::suffix_array::suffix_array::SuffixArray; /// Finds the longest repeated substring. From 010ac24004ee05b7ff10ca8af9f2b1609befb164 Mon Sep 17 00:00:00 2001 From: tekawade <38859477+tekawade@users.noreply.github.com> Date: Mon, 17 Nov 2025 22:58:53 -0800 Subject: [PATCH 2/4] Update modules/advanced/src/allow_filter.rs Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> --- modules/advanced/src/allow_filter.rs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/modules/advanced/src/allow_filter.rs b/modules/advanced/src/allow_filter.rs index aa3dbb0..90fe5a1 100644 --- a/modules/advanced/src/allow_filter.rs +++ b/modules/advanced/src/allow_filter.rs @@ -1,8 +1,8 @@ -//! Allow filter application - prints words from stdin that are in the allowlist. +//! Provides an `AllowFilter` to filter words against an allowlist. //! -//! Reads an allowlist of words from a file, then reads words from standard input -//! and prints all those words that appear in the allowlist. Useful for demonstrating -//! set data structures and membership testing. +//! The `AllowFilter` struct can be used to build an application that reads words +//! from standard input and prints only those present in the allowlist, which is +//! useful for demonstrating set data structures. use std::collections::HashSet; use std::fs::File; use std::io::{self, BufRead, BufReader}; From b15112a30e8327c28cec36c7a034e715de647043 Mon Sep 17 00:00:00 2001 From: tekawade <38859477+tekawade@users.noreply.github.com> Date: Mon, 17 Nov 2025 22:59:36 -0800 Subject: [PATCH 3/4] Update modules/advanced/src/block_filter.rs Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> --- modules/advanced/src/block_filter.rs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/modules/advanced/src/block_filter.rs b/modules/advanced/src/block_filter.rs index 63613d3..f3b39ed 100644 --- a/modules/advanced/src/block_filter.rs +++ b/modules/advanced/src/block_filter.rs @@ -1,8 +1,8 @@ -//! Block filter application - prints words from stdin that are NOT in the blocklist. +//! Provides a `BlockFilter` to filter words against a blocklist. //! -//! Reads a blocklist of words from a file, then reads words from standard input -//! and prints all those words that do NOT appear in the blocklist. Useful for -//! filtering out common words or spam. +//! The `BlockFilter` struct can be used to build an application that reads words +//! from standard input and prints only those that do not appear in the blocklist, +//! which is useful for filtering out common words or spam. use std::collections::HashSet; use std::fs::File; use std::io::{self, BufRead, BufReader}; From 7bfebcb55a68040a7e287852797d54638bedca71 Mon Sep 17 00:00:00 2001 From: tekawade <38859477+tekawade@users.noreply.github.com> Date: Mon, 17 Nov 2025 22:59:55 -0800 Subject: [PATCH 4/4] Update modules/advanced/src/top_m.rs Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> --- modules/advanced/src/top_m.rs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/modules/advanced/src/top_m.rs b/modules/advanced/src/top_m.rs index 5b2cf4e..87fb82e 100644 --- a/modules/advanced/src/top_m.rs +++ b/modules/advanced/src/top_m.rs @@ -1,8 +1,8 @@ -//! TopM - Find the M largest items from a stream. +//! Provides a `TopM` data structure to find the M largest items from a stream. //! -//! Reads a sequence of transactions from standard input and prints the M largest ones -//! to standard output. Uses a minimum priority queue of size at most M+1 to identify -//! the M largest transactions efficiently. +//! It uses a min-priority queue to efficiently keep track of the M largest items +//! seen so far. This can be used to build an application that reads items from +//! standard input (like a sequence of transactions) and prints the top M. /// Finds the top M items from a stream using a min priority queue. ///