Loading...
Choose Language...
Java
Python
JavaScript
C#
Ruby
Haskell
C
C++
Elixir
PHP
COBOL (Beta)
Rust
Go
Factor (Beta)
CoffeeScript
Clojure
TypeScript
Swift
Crystal
R (Beta)
Shell
OCaml (Beta)
Julia (Beta)
Scala
F#
Kotlin
Groovy
Lua
Pascal (Beta)
Perl (Beta)
D (Beta)
Racket
PowerShell (Beta)
Reason (Beta)
VB (Beta)
Prolog (Beta)
Fortran (Beta)
Dart
CommonLisp (Beta)
Nim (Beta)
Raku (Beta)
Elm (Beta)
Erlang (Beta)
NASM
PureScript (Beta)
Idris (Beta)
BF (Beta)
RISC-V (Beta)
CFML (Beta)
Train Now

Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.

Description

Try this katas, young Padawan!

Ad
6 kyu
The Deaf Rats of Hamelin
6,494dinglemouse
Fundamentals
Strings
Algorithms
Queues
Data Structures
6 kyu
Ease the StockBroker
2,136g964
Fundamentals
Strings
6 kyu
Sums of Parts
24,595g964
Fundamentals
Performance
Algorithms
6 kyu
Simple Encryption #1 - Alternating Split
28,535user5036852
Cryptography
Algorithms
Strings
Arrays
Fundamentals
6 kyu
Schrödinger's Boolean
3,365docgunthrop
Language Features
Metaprogramming
Puzzles
Retired
Checking Groups (retired)
7,129JS01
Algorithms
Data Structures
Strings
Data Types
6 kyu
Fold an array
11,054user5036852
Fundamentals
Logic
Mathematics
Algorithms
6 kyu
Coordinates Validator
6,896louy
Regular Expressions
Algorithms
6 kyu
extract portion of file name
8,131Javatlacati
Regular Expressions
Fundamentals
6 kyu
+1 Array
12,056khelmar
Fundamentals
Arrays
Algorithms
6 kyu
String average
3,930jc66
Strings
Algorithms
5 kyu
Rot13
91,925Rubikan
Ciphers
Fundamentals
5 kyu
Caesar Cipher Helper
4,916eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Packing your backpack
791Frederikbh
Algorithms
Dynamic Programming
6 kyu
Esolang: Tick
906user2514386
Esoteric Languages
Interpreters
Strings
Arrays
Fundamentals
6 kyu
Esolang: MiniBitMove
946user2514386
Interpreters
Strings
Arrays
Bits
Esoteric Languages
Fundamentals
5 kyu
Simple Finite State Machine Compiler
758awesomeaf
State Machines
Interpreters
Compilers
6 kyu
Backspaces in string
18,493vetalpaprotsky
Fundamentals
Strings
Algorithms
6 kyu
The Lamp: Revisited
1,697devtheory
Fundamentals
Object-oriented Programming
6 kyu
IPv4 to int32
10,694sahglie
Networks
Algorithms
Bits
Binary
Fundamentals
6 kyu
SMS Shortener
669Bugari
Algorithms
Fundamentals
Strings
5 kyu
Grab CSV Columns
1,078xDranik
Strings
Algorithms
5 kyu
Regex Password Validation
28,437EricFreeman
Regular Expressions
Fundamentals
6 kyu
More Zeros than Ones
3,502crimbus
Fundamentals
5 kyu
Haiku Checker
251anter69
Algorithms
5 kyu
Calculate Variance
2,533eerwitt
Statistics
Mathematics
Algorithms
5 kyu
Vector Class
855Detry322
Fundamentals
Object-oriented Programming
8 kyu
Arguments to Binary addition
3,316Javatlacati
Arrays
Binary
Fundamentals
8 kyu
Basic subclasses - Adam and Eve
18,378hansrusten
Fundamentals
Object-oriented Programming
6 kyu
PatternCraft - Strategy
4,284brunolm
Design Patterns
Fundamentals
6 kyu
PatternCraft - State
4,243brunolm
Design Patterns
Fundamentals
6 kyu
PatternCraft - Decorator
4,013brunolm
Design Patterns
Fundamentals
6 kyu
Sortable Shapes
2,618FrankK
Sorting
Fundamentals
Mathematics
Design Patterns
Arrays
Geometry
6 kyu
JSON Class Decorator
459SquishyStrawberry
Fundamentals
Object-oriented Programming
6 kyu
You look like a classy instance! Show me what you've got! - Part 1
578Skratch
Data Structures
Strings
Lists
Fundamentals
Object-oriented Programming
6 kyu
Simple Web Framework #1: Create a basic router
1,548int3_0xcc
Object-oriented Programming
Arrays
Fundamentals
7 kyu
"Very Even" Numbers.
3,968realfg
Fundamentals
Mathematics
Algorithms