JavaScript Algorithms
trekhleb/javascript-algorithms
Algorithms and data structures implemented in JavaScript with explanations. GitHub: trekhleb/javascript-algorithms (~196k stars).
GitHub repository
Overview
JavaScript Algorithms is the open-source project at trekhleb/javascript-algorithms on GitHub (https://github.com/trekhleb/javascript-algorithms). Algorithms and data structures implemented in JavaScript with explanations. Category on LimeDock: development. Approximate community size: ~196k GitHub stars. Repo (copy/paste): https://github.com/trekhleb/javascript-algorithms This LimeDock Directories page explains what it is and how teams use it in plain English — so searches for the GitHub project can land on a practical guide.
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Link
Installation guide
Open the GitHub repository, then follow the README for your stack.
Official GitHub repository: https://github.com/trekhleb/javascript-algorithms GitHub path: trekhleb/javascript-algorithms
How to open it: 1. Copy this URL: https://github.com/trekhleb/javascript-algorithms 2. Clone or follow the README install for your OS / stack. 3. Start with the smallest example in their docs before production use.
How to use it
**Simple example** Interview prep or fundamentals refresh without switching languages.
1. Browse the topic you need. 2. Implement the exercise yourself before reading solutions. 3. Discuss Big-O in a pairing session.
Example prompts
- “Help me practice two-sum using this repo’s style.”
- “Which structures matter most for frontend eng interviews?”
- “Study plan for 2 weeks.”
Use cases and examples
- Evaluate trekhleb/javascript-algorithms for your stack
- Onboard a teammate to JavaScript Algorithms with a shared checklist
- Compare JavaScript Algorithms against tools you already pay for
- Capture lessons in your internal wiki after a pilot
Prerequisites
- JS comfort
Tips
- Understanding > memorizing code.
- Tie algorithms back to real perf issues occasionally.