lc-review

lc-review is a command-line tool designed to help you manage and review your LeetCode problems using the SuperMemo 2 (SM2) algorithm for spaced repetition. It processes your problem-solving logs and generates a prioritized list of problems to review based on their due dates and frustration scores.

Installation

npm install --global lc-review@latest

Usage

Show the next n problems to review (default: 1):

• lc-review next [n]

Example:

lc-review next 3

Record a solved attempt (confidence range: 0.0 to 1.0):

• lc-review add <problem_number> <confidence>

Example:

# add a problem result
lc-review add 1234 0.4

solutions.log File

The tool automatically creates and maintains a solutions.log file in your current directory to track your problem-solving history. Each entry is recorded in the following format:

date=YYYY-MM-DD problem=#### confidence=N.N [skip=true]

• date: The date you solved the problem (ISO format)
• problem: The LeetCode problem number (zero-padded to 4 digits)
• confidence: Your confidence level from 0.0 (no confidence) to 1.0 (full confidence)
• skip: Optional flag to mark a problem as skipped in reviews

This file is used by the SM2 algorithm to calculate when you should review each problem next.