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Join Exercism’s Kotlin Track for access to 89 exercises with automatic analysis of your code and personal mentoring, all 100% free.
fun getGreeting(): String {
return "Hello, World!"
}
Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Exercism's classic introductory exercise. Just say "Hello, World!".
Implement a simple shift cipher like Caesar and a more secure substitution cipher.
Convert modern Arabic numbers into Roman numerals.
Kotlin is trying hard to be a modern language with great tooling support.
Strong type-safety and null-safety features for building robust software.
Kotlin support both functional and mainstream OOP programming principles.
Develop for Android, iOS, JVM, Node.js, browser and many native targets.
Kotlin (as a modern generic-purpose language) does memory management for you.
Kotlin is fully open-source. Submit patches or suggest language improvements.
Every language has its own way of doing things. Kotlin is no different. Our mentors will help you learn to think like a Kotlin developer and how to write idiomatic code in Kotlin. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Kotlin - they'll help you discover the things you don't know that you don't know.
Learn more about mentoring
The Kotlin track on Exercism has 89 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.
See all Kotlin exercises
The best part, it’s 100% free for everyone.