Coding Challenges
Hands-on interactive exercises to sharpen your skills. Select a topic to begin.
Exercism
beginner 92 exercises
bash
beginner 138 exercises
javascript
beginner 128 exercises
python
beginner 104 exercises
ruby
intermediate 94 exercises
clojure
intermediate 135 exercises
csharp
intermediate 77 exercises
dart
intermediate 126 exercises
elixir
intermediate 137 exercises
go
intermediate 106 exercises
haskell
intermediate 135 exercises
java
intermediate 87 exercises
kotlin
intermediate 69 exercises
nim
intermediate 59 exercises
ocaml
intermediate 101 exercises
php
intermediate 98 exercises
rust
intermediate 109 exercises
typescript
advanced 88 exercises
awk
advanced 83 exercises
c
advanced 84 exercises
cpp
advanced 117 exercises
crystal
advanced 81 exercises
elm
advanced 128 exercises
fsharp
advanced 94 exercises
gleam
advanced 65 exercises
groovy
advanced 56 exercises
idris
advanced 63 exercises
jq
advanced 87 exercises
julia
advanced 50 exercises
objective c
advanced 72 exercises
odin
advanced 134 exercises
powershell
advanced 87 exercises
r
advanced 30 exercises
reasonml
advanced 89 exercises
sml
advanced 97 exercises