Data Structures and Algorithms (DSA) Repository

Welcome to the DSA (Data Structures and Algorithms) repository! This project is designed as a comprehensive resource for mastering DSA concepts, preparing for coding interviews, and practicing real-world problems in multiple programming languages.

📚 Repository Structure

The repository is organized by programming language, then by topic, and further by difficulty level:

<Language>/
  <Topic>/
    <Difficulty>/
      questionX.txt
      answerX.<language_extension>
      README.md

• Languages: Python, JavaScript, C++
• Topics: Arrays, Dynamic Programming, Graphs, Hashmaps, Linked Lists, Math, Queues, Recursion, Searching, Sorting, Stacks, Strings, Trees, etc.
• Difficulty Levels: Basic, Moderate, Advanced

✅ Completed Sections

As of now, the following sections are fully implemented:

• Python

  • Arrays (Basic, Moderate, Advanced)
  • Dynamic Programming (Basic, Moderate, Advanced)
  • Graphs (Basic, Moderate, Advanced)
  • Hashmaps (Basic, Moderate, Advanced)
  • Linked Lists (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Math (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Queues (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Recursion (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Searching (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Sorting (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Stacks (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Strings (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Trees (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)

• JavaScript

  • Arrays (Basic, Moderate, Advanced)
  • Dynamic Programming (Basic, Moderate, Advanced)
  • Graphs (Basic, Moderate, Advanced)
  • Hashmaps (Basic, Moderate, Advanced)
  • Linked Lists (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Math (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Queues (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Recursion (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Searching (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Sorting (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Stacks (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Strings (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Trees (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)

• C++

  • Arrays (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
  • Dynamic Programming (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)

Each problem includes:

• A real interview question (with source link)
• A clean, professional solution with multiple approaches
• Clear file and folder naming for easy navigation
• Modern language features and idioms (ES6+ for JavaScript)

🚧 Coming Soon

• C++: All topics in all languages
• More languages Maybe?? rust

📂 Table of Contents

Python

• Python/arrays/ — Arrays problems and solutions
• Python/dynamic_programming/ — Dynamic Programming problems and solutions
• Python/graphs/ — Graphs problems and solutions
• Python/hashmaps/ — Hashmaps problems and solutions
• Python/linked_lists/ — Linked Lists problems and solutions
• Python/math/ — Math problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/queues/ — Queues problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/recursion/ — Recursion problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/searching/ — Searching problems and solutions
• Python/sorting/ — Sorting problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/stacks/ — Stack problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/strings/ — String problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• Python/trees/ — Tree problems and solutions (Basic, Moderate, Advanced)

JavaScript

• JavaScript/arrays/ — Arrays problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/dynamic_programming/ — Dynamic Programming problems and solutions
• JavaScript/graphs/ — Graphs problems and solutions
• JavaScript/hashmaps/ — Hashmaps problems and solutions
• JavaScript/linked_lists/ — Linked Lists problems and solutions
• JavaScript/math/ — Math problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/queues/ — Queues problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/recursion/ — Recursion problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/searching/ — Searching problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/sorting/ — Sorting problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/stacks/ — Stack problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/strings/ — String problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• JavaScript/trees/ — Tree problems and solutions (Basic, Moderate, Advanced)

C++

• C++/arrays/ — Arrays problems and solutions (Basic: GeeksforGeeks, Moderate/Advanced: LeetCode)
• C++/dynamic_programming/ — Dynamic Programming problems and solutions

🛠️ Usage

1. Navigate to your topic and difficulty of interest.
2. Read the questionX.txt for the problem statement and source.
3. Review the corresponding answerX.py for a clean solution.
4. Use the README.md in each folder for additional guidance.

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This repository is a work in progress. Stay tuned for more updates and topics!