Learn
Discover
Contribute
More

cr0t

1,717

Sergey Kuznetsov

Stockholm, Sweden

He/him/his

Joined Apr 2019

16 badges collected

Insider

Published Solutions

279

Solutions mentored

185

Students helped

124

Testimonials received

Code practice and mentorship for everyone

Develop fluency in 67 programming languages with our unique blend of learning, practice and mentoring. Exercism is fun, effective and 100% free, forever.

Sign up for free Explore languages

Editions

Exercism
Exercism for Teams
Exercism Research

About

About Exercism
Our team
Contributors
Partners
Individual supporters

Get involved

Exercism Insiders
Contribute
Mentor
Donate

Legal & policies

Terms of usage
Privacy policy
Cookie policy
Code of conduct
Accessibility statement

Keep in touch

Exercism's blog
Discuss on GitHub
Contact us
Report abuse

Get help

Exercism's Docs
Getting started
FAQs
Installing the CLI
Interactive CLI Walkthrough

Our programming language tracks

8th
ABAP
AWK
Ballerina
Bash
C
C#
C++
CFML
Clojure
COBOL
CoffeeScript
Common Lisp
Crystal

D
Dart
Delphi Pascal
Elixir
Elm
Emacs Lisp
Erlang
F#
Fortran
Gleam
Go
Groovy
Haskell
Java

JavaScript
jq
Julia
Kotlin
LFE
Lua
MIPS Assembly
Nim
Objective-C
OCaml
Perl
Pharo
PHP

PL/SQL
PowerShell
Prolog
PureScript
Python
R
Racket
Raku
ReasonML
Red
Ruby
Rust
Scala

Scheme
Standard ML
Swift
Tcl
TypeScript
Unison
V
Vim script
Visual Basic
WebAssembly
Wren
x86-64 Assembly
Zig

Want to add a language track to Exercism?

Start a new topic in the forum and let's discuss it.

Exercism is not-for-profit organisation registered in the UK. Its trustees are Katrina Owen, Jeremy Walker and Erik Schierboom.

© 2023 Exercism