🧩 LeetCode Plus — Solve LeetCode Inside VS Code

LeetCode Plus lets you fetch, solve, and submit LeetCode problems directly inside Visual Studio Code, without leaving your editor.
It provides a fast, distraction-free, and customizable workflow for competitive programming and interview prep.

✨ Features

🚀 Core Capabilities

• 🔐 Login via LeetCode Session Cookie — securely authenticate once, and the extension remembers your session.
• 🎯 Fetch Random Problems — instantly load a random problem directly in VS Code.
• 🧠 Difficulty Filters — pick your preferred level:
  • Easy / Medium / Hard
  • Random (Easy, Medium, Hard)
  • Random (Easy, Medium)
  • Random (Medium, Hard)
• 💻 Language Picker — choose and save your preferred language (Python3, C++, Java, JavaScript, etc.).
• 🧩 WebView Problem Display — see formatted problem descriptions, examples, and constraints in a beautiful VS Code web panel.
• 🗂 Automatic File Creation & Organization
  • Each fetched problem is saved automatically under workspace/<Difficulty>/<slug>.<ext>
  • No need to manually save or name files.
• ⚡ Submit Code & Get Live Results
  • Submits code directly to LeetCode.
  • Displays status, runtime, and memory usage.
• 🧪 Live Results Panel
  • Updates in real-time as your submission is evaluated.
  • Shows input, expected output, and your output.
• 🧭 Persistent Preferences
  • Remembers your chosen language and difficulty filter.
  • Fetches future problems based on your saved preferences.
• 🧱 Clean UI
  • Adaptive colors for light/dark themes.
  • Tags showing current difficulty, language, and filters in the WebView header.

🧰 Commands

⚙️ Requirements

To use this extension:

1. You must have a LeetCode account.
2. Retrieve your LEETCODE_SESSION and csrftoken cookies from leetcode.com.
   • Log in, open Developer Tools → Application → Cookies → Copy both values.
3. Run the command LeetCode Plus: Set Session Cookie and paste them when prompted.

Optional

• Install your language runtime (e.g., Python, C++, Java) to test locally.
• A LeetCode Premium account is not required — only free problems are fetched.

⚙️ Extension Settings

This extension contributes the following settings:

🧭 File Structure

Example after fetching a few problems:

workspace/ ├── Easy/ │ └── two-sum.py ├── Medium/ │ └── add-two-numbers.py ├── Hard/ │ └── trapping-rain-water.cpp

Each file is auto-saved with starter code and ready to run.

🧩 Known Issues

• Some premium problems cannot be fetched (API restricted by LeetCode).
• WebView might not show images correctly if offline.
• Ensure your cookies are valid — expired sessions will cause “Submission failed” errors.

🧾 Release Notes

1.0.0 – First Public Release

✅ Core features implemented:

• Problem fetch with language & difficulty preferences
• WebView problem renderer
• Auto-saved workspace files
• Live submission + result panel
• Cookie-based authentication
• Configurable shortcuts

💡 Roadmap (Upcoming Features)

• 🪄 Clickable tags in WebView to change language/difficulty instantly
• 🧩 Sidebar Problem Tree View (browse solved problems)
• 🧠 AI hints and solution explanations
• 💾 Problem history + notes tracking
• 🕹 Interview Practice Mode with timer and progress stats

🧠 Contributing

We welcome feedback, ideas, and pull requests!
If you’d like to improve or add features, open an issue or PR on GitHub:

👉 https://github.com/Sanju-S/vscode-leetcode-plus

🧾 License

This project is licensed under the MIT License — free to use, modify, and distribute.

Enjoy solving problems without leaving VS Code! 🚀