LeetCode

Quick Info

Pricing: Freemium

Best For: Software engineers of all levels, especially those targeting roles in tech companies, who need to rigorously practice coding problems and master data structures and algorithms.

← Back to Directory

Summary

A leading platform for software engineers to enhance coding skills, practice technical problems, and prepare for technical interviews, featuring a vast repository of questions and a large developer community.

Key Interview Preparation Features

Extensive collection of coding problems (over 3750) categorized by topic (arrays, strings, trees, dynamic programming, etc.) and difficulty (Easy, Medium, Hard). "Top Interview Questions" collections curated for classic interview problems. Company-specific question sets and preparation guides for FAANG and other tech companies (often locked for premium users). Integrated coding environment (Playground) supporting 14+ languages for solving and testing problems. Discussion forums for each problem with community solutions and explanations. Contests to simulate timed assessment conditions. Interview Crash Courses on Data Structures & Algorithms, System Design, and Behavioral Interviews (some content may be premium).

Pros

Massive and high-quality question bank, considered essential practice for technical interviews at many top tech companies.
Excellent for developing problem-solving skills, understanding data structures and algorithms deeply.
Active community providing diverse solutions and discussions.
Helps users get accustomed to typical online assessment environments.

Cons

Primarily focused on coding problems; AI-driven mock interviews with conversational feedback or behavioral coaching are not its core offering, though some mention ChatGPT can be used to generate LeetCode explanations.
Can be overwhelming for beginners due to the sheer volume and difficulty of some problems.
Best solutions or company-specific content often require a premium subscription.