Coding Puzzles

Solutions to coding puzzles from LeetCode, HackerRank, and Meta platforms.

Project Structure

This repository contains organized solutions to various coding problems, categorized by platform and difficulty level:

Puzzles/
├── LeetCode/
│   ├── Easy/
│   ├── Medium/
│   └── Hard/
├── HackerRank/
│   ├── Easy/
│   ├── Medium/
│   └── Hard/
└── Meta/
    ├── Lv1/
    ├── Lv2/
    ├── Lv3/
    └── Lv4/

Solution Format

Each coding puzzle folder contains:

• Solution file: Implementation in Java, Python, or JavaScript.
• test_cases.txt: Test cases to validate the solution.
• Comprehensive documentation with:
  • Problem description and link
  • Algorithm explanation
  • Time and space complexity analysis
  • Detailed inline comments

Features

• Multiple Languages: Solutions implemented in Java, Python, or JavaScript.
• Test-Driven: Each solution includes test cases for validation.
• Well-Documented: Detailed JavaDoc/docstring/JSDoc comments explaining approach.
• Complexity Analysis: Time and space complexity for each solution.
• Organized Structure: Problems categorized by platform and difficulty/level.
• Standard Compliant: Python code follows PEP-8 style guidelines with lowercase variable naming.
• Automated Testing: All solutions include test case reading functionality from test_cases.txt files.

Usage

To run any solution:

1. Navigate to the specific problem folder with Puzzles as your source directory.
2. Compile and run the solution file:
   • Java: javac FileName.java && java FileName
   • Python: python FileName.py
   • JavaScript: node FileName.js
3. The program will automatically read test cases from test_cases.txt.
4. Results will be displayed for each test case.

Platforms Covered

• LeetCode: Algorithm and data structure problems (Easy, Medium, Hard).
• HackerRank: Programming challenges and contests (Easy, Medium, Hard).
• Meta: Coding interview puzzles organized by difficulty levels (Lv1-Lv4).

Problem Count

• LeetCode: 25+ problems across all difficulty levels
• HackerRank: 10+ problems across Easy and Medium levels
• Meta: 7 problems in Lv1 level

Languages Used

• Java: Primary language for LeetCode and HackerRank solutions
• Python: Used for Meta platform solutions (PEP-8 compliant) and some HackerRank problems
• JavaScript: Used for select LeetCode problems