LeetHack

Bot that solves LeetCode and HackerRank for you.

This bot will go through all unsolved, non-premium, non-contest tasks from a given URL. For each task it will query open ai for a solution, paste it into the code editor and press Submit button. Solutions are also saved into solutions.md with comments for further study.

Note: Use at your own risk.

Installation

You'll need Node.js.

npm install

Configuration

Fill in your credentials in config.json:

{
  "OPENAI_API_KEY": "",
  "MODEL": "gpt-4o",
  "MAX_TOKENS": 700,
  "URL": "https://leetcode.com/studyplan/leetcode-75/",
  "LANG": "JavaScript"
}

• OPENAI_API_KEY: ℹ️ You can obtain your API key from OpenAI's API keys page. Billing. Usage dashboard. API is separate from Plus subscription.

• MODEL: You can specify which model to use: gpt-4, gpt-4o, gpt-4-turbo, gpt-3.5-turbo.

• MAX_TOKENS: Adjust this value if the solution output is being truncated.

• LANG: For LeetCode this will be set in localStorage as a lowercase string under the key 'global_lang'. For HackerRank the bot will attempt to select the language from a dropdown. Both Monaco and CodeMirror editors are supported.

• URL:

  • 📋 For LeetCode you can use both /studyplan/ lists, and /problemset/ search links, such as:
    • https://leetcode.com/studyplan/leetcode-75/
    • https://leetcode.com/studyplan/top-100-liked/
    • https://leetcode.com/studyplan/top-interview-150/
    • A filtered problemset search like https://leetcode.com/problemset/algorithms/?difficulty=EASY&status=NOT_STARTED will also work.
  • 📋 For HackerRank you can use both /interview-preparation-kit/ lists, and /domains/ search links, such as:
    • https://www.hackerrank.com/interview/interview-preparation-kit/warmup/challenges
    • https://www.hackerrank.com/interview/interview-preparation-kit/strings/challenges
    • https://www.hackerrank.com/interview/preparation-kits/one-month-preparation-kit/one-month-week-three/challenges
    • A filtered problemset search like https://www.hackerrank.com/domains/algorithms?filters%5Bstatus%5D%5B%5D=unsolved&filters%5Bdifficulty%5D%5B%5D=easy&badge_type=problem-solving will also work.

Run

node bot.js

Log In

The first time you run the bot, LeetCode / HackerRank will ask you to log in.

Log in manually, solve the CAPTCHA if needed, and press Enter in the terminal.

The bot will save your cookies (cookies_leetcode.json and / or cookies_hackerrank.json respectively), so you won’t need to log in again.

coffee ☕️