Competitive Programming Handbook

Welcome to the Competitive Programming Handbook Repository — a comprehensive, structured, and community-driven collection of algorithms, data structures, problem-solving techniques, and detailed explanations aimed at helping students and developers master competitive programming.

This repository is designed to serve as a single-source reference for beginners as well as advanced programmers preparing for:

• Competitive Coding Contests
• Technical Placement Interviews
• Olympiads
• GATE
• ICPC
• Codeforces
• LeetCode
• AtCoder

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Purpose of This Repository

The goal of this project is to:

• Build a complete handbook of competitive programming
• Provide clear explanations with clean implementations
• Cover all major algorithms and data structures
• Include common CP patterns and optimization tricks
• Encourage open-source collaboration
• Maintain professional documentation and structure

This repository is meant to grow continuously with contributions from the community.

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Repository Structure

/algos

This directory will contain:

• All algorithms
• Core data structures
• Classical problem solutions
• Optimized solutions
• Step-by-step explanations

Each algorithm must be placed in its relevant category folder, such as:

• dp
• graphs
• trees
• math
• strings
• bit-manipulation
• greedy
• searching
• range-queries

More directories will be added as the project scales.

What This Handbook Will Contain

• Basic to Advanced Algorithms
• Fundamental & Advanced Data Structures
• Dynamic Programming
• Graph Theory (BFS, DFS, Dijkstra, MST, etc.)
• Number Theory
• Greedy Techniques
• Bit Manipulation
• Binary Search
• String Algorithms (KMP, Z, Trie, Hashing)
• Geometry
• Range Queries (Segment Tree, Fenwick Tree)
• Advanced Topics (HLD, Mo’s Algorithm, etc.)

Each topic will include:

• Algorithm explanation
• Time & Space Complexity
• Clean, readable implementation
• Sample test cases
• Optimization notes

How to Participate & Contribute

Contributions are open to everyone.

Steps to Contribute

1. Fork this repository
2. Create a new branch with your name

git checkout -b your-name

3. Add your files inside the /algos directory in the appropriate category
4. Follow clean coding practices with proper documentation
5. Commit and push your changes
6. Create a Pull Request (PR)

All pull requests will be reviewed before merging.

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Contribution Guidelines

• Code must be well-documented
• Follow standard naming conventions
• Include time & space complexity
• Avoid unnecessary boilerplate
• One algorithm per file
• No copied code without proper credit
• Clearly explain tricky logic

Low-effort or poorly documented submissions will not be merged.

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Community & Collaboration

This project is built on:

• Collaboration

• Learning

• Teaching

• Knowledge Sharing

• If you’re a beginner, this repository will guide you.

• If you’re experienced, your contributions can help thousands.

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Future Plans

• Full Algorithm Roadmap
• Problem-wise CP Handbook
• Interview Preparation Track
• GATE-Level Problem Sets
• Contest-wise Practice Banks
• PDF Version of the Handbook
• Language-wise Implementations (C++, Java, Python, Rust)

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Support the Project

If this repository helps you:

• Give it a ⭐ on GitHub
• Share it with your friends
• Contribute regularly

Your support helps the project grow.

Contact & Maintainers

For:

• Bug reports
• Suggestions
• Feature requests
• New topic proposals

Please open an Issue or submit a Pull Request.

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Let’s build the ultimate open-source Competitive Programming Handbook together.