LeetCode Auto Submission Script

This Node.js script automates fetching solved LeetCode problems, retrieves corresponding Java code (via WalkCCC data), and submits solutions directly to LeetCode using your authenticated session.

Features

• Fetches your solved LeetCode problems using GraphQL

• Skips premium-only & DB-only questions

• Extracts Java solutions from merged_output.json

• Submits code to LeetCode automatically

• Logs skipped/unsubmitted questions

• Tracks progress in progress.json

Project Structure

project/
├── ok.js             # Your main Node.js script
├── merged_output.json    # Contains problem info (id, walkcc_url, leetcode_url)
├── progress.json         # Tracks submitted questions
├── skipped.log           # Logs skipped/unsubmitted entries

Requirements

• Node.js Environment (Make sure Node.js is installed.)

node -v
npm -v

• Install Dependencies

npm install fs-extra

Update Credentials in Script

Fill in these fields at the top of the file:

const LEETCODE_SESSION = "<your-session-cookie>";
const CSRFTOKEN = "<your-csrf-token>";

How to get them (Chrome browser):

• Install this extension:

• Log in to https://leetcode.com

• Open the Cookie Editor

• Copy the values of:

LEETCODE_SESSION
csrftoken

Paste them into the script here:

LEETCODE_SESSION = ""
CSRFTOKEN = ""

How It Works

• Constants

MAX_Q: Total number of questions to iterate (default: 3691)

TARGET_SUCCESS: Required success count (1 means first submission victory)

MAX_RANDOM_ATTEMPTS: Max retries per question

DELAY_BETWEEN_ATTEMPTS_MS: Delay between submissions

premiumQues: List of paid-only questions to skip

dbQues: List of SQL/DB-based questions to skip

Running the Script

Run the script with Node:

node script.js