Problem Solving Practice Repository

Welcome to my Problem Solving Practice repository! 👋

🚀 About This Repository

This repository is dedicated to improving my problem-solving skills using Java. It focuses on mastering algorithms and data structures through hands-on practice and challenges.

Problems are sourced from platforms like Codeforces and LeetCode, as well as structured courses for systematic learning.

🎯 Goals

• Strengthen algorithmic thinking and coding proficiency.
• Prepare for coding interviews with comprehensive practice.
• Build efficient and optimized solutions to challenging problems.

📚 Topics Covered

Arrays and Strings

• Sliding Window
• Two Pointers
• Fast and Slow Pointers
• Sorting Algorithms
• Searching Algorithms
• Prefix Sum

Linked Lists and Stacks

• In-place Reversal of a Linked List
• Linked Lists
• Stacks and Queues
• Queues and Deques

Trees and Graphs

• Tree Breadth-First Search
• Tree Depth-First Search
• Topological Sort (Graph)
• Graph Basics and Traversals
• Graph Algorithms (DFS, BFS, Dijkstra's, Floyd-Warshall)

Dynamic Programming

• 0/1 Knapsack
• Longest Common Substring
• Advanced Dynamic Programming
• Bitwise XOR
• Subsets

Greedy Algorithms

• Merge Intervals
• Cyclic Sort
• Greedy Strategies

Divide and Conquer

• Modified Binary Search

Advanced Topics

• Two Heaps (Priority Queues)
• K-way Merge
• Trie (Prefix Tree)
• Segment Trees and Fenwick Trees
• Disjoint Set Union (Union-Find)
• Computational Geometry
• Number Theory
• String Matching Algorithms (KMP, Rabin-Karp, Z-Algorithm)
• Bit Manipulation Techniques

📂 Project Structure

root/
  ├── DSA/                        # Practice by topics (Leetcode & Codeforces)
  │   ├── arrays_and_strings/
  │   ├── linked_lists_and_stacks/
  │   ├── trees_and_graphs/
  │   ├── dynamic_programming/
  │   ├── greedy_algorithms/
  │   ├── divide_and_conquer/
  │   ├── advanced_topics/
  │   └── utils/
  ├── Leetcode/                   # Practice by Contests and Study Plans
  │   ├── contests/
  │   ├── study_plans/
  ├── test/
  │   ├── DSA/
  │   ├── Leetcode/
  ├── README.md
  ├── .gitignore
  ├── pom.xml
  ├── build.gradle
  ├── LICENSE

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Feel free to explore the repository and contribute your suggestions or solutions! 🚀