Coding Problems Collection

A comprehensive collection of algorithmic coding problems with test cases and boilerplate code in multiple programming languages.

📁 Repository Structure

Each problem is organized in its own directory with the following structure:

problem-name/
├── Problem.md          # Problem statement and examples
├── Structure.md        # Input/output specifications
├── boilerplate/        # Basic function templates
│   ├── function.java
│   └── function.js
├── boilerplate-full/   # Complete function implementations
│   ├── function.java
│   └── function.js
└── tests/             # Test cases
    ├── inputs/        # Input files (0.txt to 99.txt)
    └── outputs/       # Expected output files (0.txt to 99.txt)

🧩 Available Problems

Problem	Description	Difficulty
anagram-check	Check if two strings are anagrams	Easy
count-vowels	Count vowels in a string	Easy
factorial	Calculate factorial of a number	Easy
fibonacci	Generate Fibonacci sequence	Easy
find-median	Find median of an array	Medium
gcd-of-two-numbers	Greatest Common Divisor	Easy
max-element	Find maximum element in array	Easy
palindrome-check	Check if string is palindrome	Easy
reverse-string	Reverse a string	Easy
sort-array	Sort an array	Easy
two-sum	Find two numbers that sum to target	Easy
valid-parentheses	Check balanced parentheses	Easy

🚀 Getting Started

1. Choose a problem: Browse the available problems and select one to solve
2. Read the problem: Check Problem.md for problem statement and examples
3. Understand structure: Review Structure.md for input/output specifications
4. Start coding: Use templates from boilerplate/ directory
5. Test your solution: Validate against test cases in tests/ directory

📝 Problem Format

Problem.md

Contains the problem statement, examples, and constraints.

Structure.md

Defines the function signature and data types following this format:

• Problem Name
• Function Name
• Input Structure (with field types)
• Output Structure (with return type)

Test Cases

Each problem includes 100 test cases (0.txt to 99.txt) with corresponding expected outputs.

💻 Supported Languages

• Java: Complete with proper data types and collections
• JavaScript: Simplified type system with arrays and basic types

📋 Rules and Guidelines

Refer to Rules.md for detailed guidelines on:

• Creating Structure.md files
• Supported data types for each language
• Input/output formatting conventions
• Function naming conventions

🎯 How to Use

1. Navigate to any problem directory
2. Read the problem statement in Problem.md
3. Check the function signature in Structure.md
4. Implement your solution using the boilerplate code
5. Test against the provided test cases
6. Compare with the full implementation if needed

🔧 Testing

Each problem comes with comprehensive test cases:

• Input files: Located in tests/inputs/
• Output files: Located in tests/outputs/
• Coverage: 100 test cases per problem

📚 Learning Path

Beginners: Start with basic problems like reverse-string, factorial, palindrome-check

Intermediate: Progress to fibonacci, two-sum, find-median

Advanced: Challenge yourself with more complex algorithms and data structures

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Happy coding! 🎉