LeetCode TypeScript Solutions

A collection of LeetCode problems solved using TypeScript, featuring:

• 💡 Detailed explanations and approach breakdowns
• ✅ Comprehensive test coverage
• 🛠️ Interactive CLI test runner
• 📝 TypeScript best practices

📚 Contents

• Setup
• Usage
• Project Structure
• Testing
• Contributing
• Problem Solutions

🚀 Setup

1. Clone the repository

git clone https://github.com/code-guy21/Leetcode-TS.git
cd Leetcode-TS

2. Install dependencies

npm install

3. Verify setup

npm test

💻 Usage

Interactive CLI

The custom CLI provides an intuitive interface for running tests:

npm start

Features:

• 📂 Browse problems by category
• 🧪 Run specific problem tests
• 📊 View test coverage

Command Line Options

Run all tests:

npm test

Run specific problem tests:

npm test src/tests/arrays/twoSum

Generate coverage report:

npm test -- --coverage

Watch mode:

npm run test:watch

📁 Project Structure

src/
├── arrays/
│   ├── two-sum/
│   │   ├── index.ts         # Solution implementation
│   │   ├── index.test.ts    # Tests
│   │   └── README.md        # Problem explanation
│   └── ...
├── strings/
├── linked-lists/
└── ...

Each problem solution includes:

• Detailed explanation of the approach
• Time and space complexity analysis
• Test cases covering edge cases
• TypeScript implementation

🤝 Contributing

1. Fork the repository
2. Create your feature branch

git checkout -b feature/new-solution

3. Implement your solution following our template:
   • Add solution in src/tests/category/problem-name/index.ts
   • Add tests in src/tests/category/problem-name/index.test.ts
   • Add README.md with explanation
4. Commit your changes
5. Push to the branch
6. Create a Pull Request

📖 Problem Solutions

Arrays

• Contains Duplicate
• Group Anagrams
• Two Sum
• Valid Anagram

Sliding Window

• Longest Substring
• Minimum Window Substring

Trees

• Maximum Depth Binary Tree
• Symmetric Tree

🛠️ Tech Stack

• TypeScript 5.x
• Jest for testing

📝 Notes

• Solutions prioritize readability and maintainability
• TypeScript features are used to enhance code safety
• Each solution includes performance considerations
• Regular updates with new problems and improvements

📄 License

MIT

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