LeetCode

What LeetCode is

LeetCode is a programming practice and learning service available on the web, Android and iOS. It offers a free plan plus Premium Monthly and Premium Yearly plans. Premium provides additional questions and solutions, company-specific interview questions, priority judging, code autocomplete and a debugger, and mock interview simulations. The service covers computer science topics and supports C++, Java, Python, C, C#, JavaScript, Ruby, Swift, Go, Scala, Kotlin, Rust, MySQL and Bash. Its learning format and feedback mode are both mixed, representing more than one listed approach. LeetCode does not offer project-based learning. The combination of language coverage, computer science topics, interview questions and mock interviews supports coding practice and interview preparation. Mobile apps extend access beyond the web version.

Who it suits

It suits people practicing programming, studying computer science topics or preparing for technical interviews. Mobile users can work through the service on Android and iOS as well as the web.

Limits

Premium plans list features such as premium questions and solutions, company-specific questions, priority judging, autocomplete, debugger, and mock interviews.

Getting started

1. Open the LeetCode website or install its Android or iOS app
2. Create an account on the service
3. Start with the free plan
4. Choose Premium Monthly or Premium Yearly for premium features
5. Select a programming language or computer science topic
6. Practice questions and use interview simulations

Verdict

LeetCode offers broad language support, coding practice and interview-focused Premium tools across web and mobile. Choose it if the listed topics and interview features match your goals.