leetcode

My LeetCode solve log. A local script pulls my accepted submissions into problem directories. The index and problems.json are generated from those directories, and every solution runs its example cases in CI.

Solved: 19 total | 5 easy | 13 medium | 1 hard

#	Title	Difficulty	Topics	Language
1	Two Sum	Easy	Array, Hash Table	Python
3	Longest Substring Without Repeating Characters	Medium	Hash Table, String, Sliding Window	Python
15	3Sum	Medium	Array, Two Pointers, Sorting	Python
20	Valid Parentheses	Easy	String, Stack, Bracket Sequences	Python
49	Group Anagrams	Medium	Array, Hash Table, String, Sorting	Python
74	Search a 2D Matrix	Medium	Array, Binary Search, Matrix	Python
84	Largest Rectangle in Histogram	Hard	Array, Stack, Monotonic Stack, Range Minimum/Maximum Query	Python
121	Best Time to Buy and Sell Stock	Easy	Array, Dynamic Programming	Python
125	Valid Palindrome	Easy	Two Pointers, String	Python
128	Longest Consecutive Sequence	Medium	Array, Hash Table, Union-Find	Python
155	Min Stack	Medium	Stack, Design	Python
167	Two Sum II - Input Array Is Sorted	Medium	Array, Two Pointers, Binary Search	Python
238	Product of Array Except Self	Medium	Array, Prefix Sum	Python
347	Top K Frequent Elements	Medium	Array, Hash Table, Divide and Conquer, Sorting, Heap (Priority Queue), Bucket Sort, Counting, Quickselect	Python
424	Longest Repeating Character Replacement	Medium	Hash Table, String, Sliding Window	Python
560	Subarray Sum Equals K	Medium	Array, Hash Table, Prefix Sum	Python
643	Maximum Average Subarray I	Easy	Array, Sliding Window	Python
739	Daily Temperatures	Medium	Array, Stack, Monotonic Stack	Python
853	Car Fleet	Medium	Array, Stack, Sorting, Monotonic Stack	Python

Adding solutions

Directories may use a numbered name such as 0347-top-k-frequent-elements or a plain problem slug. Add tests.py with a run(solution) function for Python; the runner imports the solution file and passes its module to that function. For C++, add tests_cpp.cpp with a main() containing the cases. The runner combines it with the solution, compiles with g++ -std=c++20, and runs it. Optional meta.yaml can supply missing metadata, for example difficulty: Medium and topics: [Array, Hash Table]. Run python3 tools/run_tests.py and python3 tools/generate_index.py before a push.