🤖 Leehint - AI-Powered LeetCode Hints

Ever stared at a LeetCode problem for 30 minutes wondering if you're close or completely lost?

Leehint is a Chrome Extension that gives you progressive AI-generated hints while solving LeetCode problems. Instead of instantly revealing the answer, it nudges you in the right direction step-by-step, helping you actually learn and improve your problem-solving skills.

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✨ Features

💡 Level 1 Hint

Get a subtle hint about the approach without revealing the solution.

🔍 Level 2 Hint

Receive a more detailed explanation that guides your thinking process.

🧠 Full Solutions

Still stuck? Generate complete solutions in:

• Python
• Java
• C++

📋 One-Click Code Copy

Copy generated solutions directly from the extension.

💾 Session Persistence

Your hints stay saved even if you close the popup and reopen it later.

🔄 Reset Anytime

Starting a new problem? Reset the extension state with a single click.

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🛠️ How It Works

1. Open any LeetCode problem.

2. Click the Leehint extension icon.

3. The extension automatically reads:

   • Problem statement
   • Your current code

4. Sends the context to Gemini.

5. Generates:

   • Level 1 Hint
   • Level 2 Hint
   • Full Solution (if requested)

The goal is to help you think through the problem instead of simply copying answers.

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📂 Project Structure

Leehint/
│
├── manifest.json       # Chrome extension configuration
├── popup.html          # Extension UI
├── popup.js            # Main extension logic
├── content.js          # Extracts LeetCode problem + code
├── style.css           # UI styling
├── icon.png            # Extension icon
└── config.js           # Gemini API Key (not included)

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⚙️ Installation

1. Clone the Repository

git clone https://github.com/yourusername/leehint.git

2. Add Your Gemini API Key

Create a file named:

config.js

Add:

const GEMINI_API_KEY = "YOUR_API_KEY_HERE";

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3. Load Extension in Chrome

1. Open Chrome
2. Go to:

chrome://extensions

3. Enable Developer Mode
4. Click Load Unpacked
5. Select the project folder

Done 🎉

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🧩 Technologies Used

• JavaScript
• Chrome Extension API (Manifest V3)
• Google Gemini API
• HTML
• CSS
• Marked.js

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🎯 Why I Built This

While solving LeetCode, I often found myself stuck between two bad choices:

• Spend hours making no progress.
• Open the solution and spoil the entire problem.

I wanted something in between.

Leehint acts like a coding mentor that gives hints progressively, allowing you to keep ownership of the solution while still getting help when needed.

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🚧 Future Improvements

• Support for more programming languages
• Better hint personalization
• Dark/Light theme support
• Hint history
• Difficulty-based guidance
• Support for other coding platforms

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⭐ Support

If you found this project useful, consider giving it a star.

It motivates me to build more developer tools and open-source projects.

Happy Coding! 🚀