🧩 LeetCode Solutions

My auto-synced journey through LeetCode, one problem at a time.

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✨ Overview

This repository automatically collects my accepted LeetCode submissions and organizes them into a clean, browsable structure. There's no manual copy-pasting - a scheduled GitHub Action fetches my latest solutions straight from LeetCode's API and commits them for me.

Every solved problem gets its own folder containing the solution file and a README with the problem's difficulty, topics, and a direct link.

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🚀 How It Works

flowchart LR
    A([⏰ Daily Cron<br/>Midnight UTC]) --> B[🤖 GitHub Action]
    B --> C[🐍 sync_leetcode.py]
    C --> D{{🌐 LeetCode<br/>GraphQL API}}
    D --> E[📥 Fetch accepted<br/>submissions + code]
    E --> F[📂 Write to<br/>problem folders]
    F --> G[✅ Commit & Push<br/>new solutions]

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1. Scheduled trigger - a GitHub Action runs every day at midnight UTC (also triggerable manually).
2. Fetch - a Python script queries LeetCode's GraphQL API for recently accepted submissions.
3. Organize - each solution is written to its own numbered folder with a generated README.
4. Commit - only new or changed solutions are committed, keeping the history clean.

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📁 Repository Structure

LeetCode/
├── .github/workflows/
│   └── sync.yml                 # ⚙️  Daily sync workflow
├── scripts/
│   └── sync_leetcode.py         # 🐍 The sync engine
├── requirements.txt             # 📦 Python dependencies
│
├── 0001-two-sum/
│   ├── 0001-two-sum.py          # 💡 Solution
│   └── README.md                # 📄 Problem details
├── 0002-add-two-numbers/
│   └── ...
└── ...

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⚙️ Setup

Want to fork this and sync your own solutions? Here's how.

1. Add your LeetCode credentials as repository secrets

Go to Settings → Secrets and variables → Actions and add:

Secret Name	Where to find it
LEETCODE_SESSION	Browser cookie LEETCODE_SESSION on leetcode.com
LEETCODE_CSRF_TOKEN	Browser cookie csrftoken on leetcode.com

2. How to grab your cookies

1. Log in to leetcode.com
2. Open DevTools (F12) → Application → Cookies → https://leetcode.com
3. Copy LEETCODE_SESSION and csrftoken
4. Paste them into the matching repository secrets

3. Run it

Head to the Actions tab → Sync LeetCode Solutions → Run workflow. After the first run, it syncs automatically every day. 🎉

⚠️ Heads up: LeetCode session cookies expire every couple of weeks. When sync stops working, just refresh the LEETCODE_SESSION secret with a fresh cookie value.

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💻 Solving problems, one commit at a time.

Visit my LeetCode Profile →