🔥 Comprehensive Java Implementations of Data Structures & Algorithms for Interview Preparation and Competitive Programming

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📘 Overview

Welcome to the Java DSA Repository! This repository is a meticulously organized collection of Java implementations for fundamental data structures and algorithms. Whether you're preparing for coding interviews, competitive programming contests, or aiming to strengthen your understanding of DSA concepts, this repository serves as a valuable resource.

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🗂️ Repository Structure

The repository is organized into topic-specific folders, each containing Java files with clean, well-commented code and problem solutions.

/Arrays /LinkedList /Stacks /Queues /Recursion /Maps /Sets /Trees /Sorting /Searching

markdown Copy code

Each folder includes:

• ✅ Java code implementations
• ✅ Key problems and solutions
• ✅ Utility methods for testing

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🚀 Features

• Beginner-Friendly: Clear explanations and simple implementations
• Interview-Focused: Solutions to commonly asked coding questions
• 100% Java: Pure Java implementations with no external dependencies
• Structured Learning: Organized by topics for easy navigation
• Regular Updates: Continuously updated with new problems and solutions

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📚 Topics Covered

• Arrays: Sliding Window, Prefix Sums, Sorting, Searching
• Linked Lists: Singly, Doubly, Cycle Detection, Reversal
• Stacks: Stack with Array/LinkedList, NGE, Balanced Brackets
• Queues: Circular Queue, Queue using Stacks, Deque
• Recursion & Backtracking: Factorial, N-Queens, Subsets, Permutations
• Hash Maps & Sets: Frequency Maps, Anagram Check, 2-Sum
• Trees & Binary Trees: Traversals, BST, LCA, Depth, Diameter
• Sorting Algorithms: Bubble, Selection, Insertion, Merge, Quick
• Searching: Binary Search, Linear Search, Search Rotated

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🛠️ Getting Started

1. Clone the repository:

   git clone https://github.com/hitesh-bhatnagar/Data-Structures-Algorithms_Java.git

Navigate to the desired topic folder.

Open the Java files in your preferred IDE (e.g., IntelliJ IDEA, Eclipse, VS Code).

Run the examples and explore the implementations.

🤝 Contributing Contributions are welcome! To contribute:

Fork the repository.

Create a new branch.

Implement your changes.

Commit your changes.

Push to your forked repository.

Submit a pull request.

Please ensure that your contributions adhere to the existing coding style and include appropriate comments and documentation.

⭐ Support the Project If you find this repository helpful:

⭐ Star the repository to show your support.

🍴 Fork the repository to contribute or use it in your projects.

💬 Open issues to report bugs or suggest improvements.

Your support encourages continuous improvement and updates to this repository.

📬 Connect with Me GitHub: @hitesh-bhatnagar

LinkedIn: Hitesh Bhatnagar

Email: hbhatnagar917@gmail.com

📄 License This project is licensed under the MIT License - see the LICENSE file for details.

🔗 Related Resources LeetCode

GeeksforGeeks

HackerRank

CodeChef

🏷️ Tags Java, DSA, Data Structures, Algorithms, Interview Preparation, Competitive Programming, Coding Questions, LeetCode, GeeksforGeeks, HackerRank, CodeChef