Kata Library: Ruby Practice
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
4
Arrays
7
Fundamentals
3
Language Features
1
Object-oriented Programming
7
Puzzles
1
Searching
1
Sorting
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
7 Kata Found
6 kyu
Array Helpers
23,795
BattleRattle
1 Issue Reported
Arrays
Fundamentals
Object-oriented Programming
6 kyu
Custom Array Filters
2,719
Mackay
2 Issues Reported
Arrays
Fundamentals
Object-oriented Programming
6 kyu
High score table
1,584
kingcobra
Algorithms
Sorting
Searching
Arrays
Object-oriented Programming
4 kyu
Validate Sudoku with size `NxN`
9,758
cbmono
13 Issues Reported
Arrays
Puzzles
Algorithms
Object-oriented Programming
5 kyu
PaginationHelper
42,221
jhoffner
2 Issues Reported
Object-oriented Programming
Arrays
Algorithms
6 kyu
Darwin's animals registry
54
armandfardeau
Algorithms
Language Features
Object-oriented Programming
Arrays
Beta
Numbble
6
devtheory
1 Issue Reported
Status:
Testing & feedback needed
Arrays
Object-oriented Programming
Fundamentals
Confirm
Collect:
undefined
Loading collection data...