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CodeVault

My Personal Programming & Competitive Programming Repository

Solve Once • Learn Forever • Implement Everywhere

GitHub last commit GitHub repo size GitHub stars GitHub forks License


C++ C C# Java Python JavaScript SQL

LeetCode Codeforces BeeCrowd HackerRank CodeChef GeeksforGeeks UVA Coding Ninjas VJudge


About

Welcome to CodeVault, my personal archive of competitive programming solutions, interview preparation, algorithms, and data structure implementations.

My goal is to solve problems in multiple languages so I can understand each language's strengths and become a better software engineer.

Current languages:

  • C
  • C++
  • C#
  • Java
  • Python
  • JavaScript
  • SQL

Problem Solving Statistics

Platform Solved
Codeforces 296
HackerRank 190
LeetCode 168
BeeCrowd 70
Coding Ninjas 51
UVA 46
CodeChef 16
GeeksforGeeks 12
VJudge 12
Total 861

Language Wise Statistics

Language Solved
C++ 670
C 113
Java 50
Python 44
JavaScript 19
C# 11
SQL 8
Total 915

Last updated: 2026-07-20 15:18 UTC


Roadmap Progress

NeetCode 150

Progress: 0 / 150
□□□□□□□□□□ 0%

Blind 75

Progress: 0 / 75
□□□□□□□□□□ 0%

Striver SDE Sheet

Progress: 0 / 191
□□□□□□□□□□ 0%

Checklist

NeetCode 150

  • Arrays & Hashing
  • Two Pointers
  • Stack
  • Binary Search
  • Sliding Window
  • Linked List
  • Trees
  • Heap
  • Backtracking
  • Graphs
  • 1-D DP
  • 2-D DP
  • Greedy
  • Intervals
  • Advanced Graphs
  • Bit Manipulation
  • Math & Geometry
  • Tries

Blind 75

  • Array
  • Binary
  • Dynamic Programming
  • Graph
  • Interval
  • Linked List
  • Matrix
  • String
  • Tree
  • Heap

Striver SDE Sheet

  • Arrays
  • Linked List
  • Binary Tree
  • BST
  • Stack & Queue
  • Recursion
  • Backtracking
  • Greedy
  • Graph
  • Dynamic Programming
  • Trie
  • Strings

Topics Covered

  • Arrays
  • Strings
  • Hashing
  • Two Pointers
  • Sliding Window
  • Stack
  • Queue
  • Linked List
  • Trees
  • BST
  • Heap
  • Binary Search
  • Graph
  • BFS
  • DFS
  • Shortest Path
  • Topological Sort
  • Union Find
  • Segment Tree
  • Fenwick Tree
  • Trie
  • Greedy
  • Dynamic Programming
  • Recursion
  • Backtracking
  • Math
  • Number Theory
  • Bit Manipulation
  • Geometry

Author

Dabananda Mitra (Debu)

Junior Software Engineer, LEADS Corporation Ltd

  • 💼 ASP.NET Core, SQL Server
  • ☕ Spring Boot, Oracle DB
  • 💙 C#, Java, C++
  • ⚡ Problem Solving, Software Architecture

About

CodeVault is my collection of daily problem solutions from various online judges like Codeforces, LeetCode, and HackerRank. I share solutions for a range of topics, including data structures, algorithms and dynamic programming.

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4 stars

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