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
1
Arrays
3
Debugging
41
Fundamentals
11
Object-oriented Programming
1
Recursion
1
Regular Expressions
2
Security
1
Sorting
1
Strings
3
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
41 Kata Found
8 kyu
Multiply
5,546,641
11 Issues Reported
Debugging
Fundamentals
8 kyu
Incorrect division method
18,554
craecke
Debugging
7 kyu
Find Duplicates with String.match
254
dnolan
1 Issue Reported
Fundamentals
Debugging
8 kyu
Filtering even numbers (Bug Fixes)
7,827
aryan-firouzian
Fundamentals
Debugging
8 kyu
Grasshopper - If/else syntax debug
41,239
danleavitt0
1 Issue Reported
Debugging
7 kyu
Thinkful - String Drills: Quotable
6,428
Grae-Drake
1 Issue Reported
Debugging
7 kyu
Ninja vs Samurai: Strike
5,689
jhoffner
2 Issues Reported
Debugging
7 kyu
Person Class Bug
7,730
jhoffner
1 Issue Reported
Debugging
Object-oriented Programming
8 kyu
String Templates - Bug Fixing #5
22,563
matt c
2 Issues Reported
Strings
Debugging
8 kyu
Unfinished Loop - Bug Fixing #1
48,607
matt c
Debugging
8 kyu
Switch/Case - Bug Fixing #6
13,606
matt c
1 Issue Reported
Debugging
7 kyu
FIXME: Get Full Name
11,267
dinglemouse
Debugging
8 kyu
Return to Sanity
23,367
begriffs
Debugging
7 kyu
Regex Failure - Bug Fixing #2
3,092
matt c
1 Issue Reported
Debugging
7 kyu
Reducing Problems - Bug Fixing #8
2,534
matt c
1 Issue Reported
Debugging
Arrays
8 kyu
Fix your code before the garden dies!
19,275
Peter Rhodes
Fundamentals
Debugging
7 kyu
Failed Filter - Bug Fixing #3
3,867
matt c
2 Issues Reported
Strings
Debugging
8 kyu
Invalid Login - Bug Fixing #11
5,177
matt c
3 Issues Reported
Security
Debugging
8 kyu
Fix the Bugs (Syntax) - My First Kata
10,738
donaldsebleung
1 Issue Reported
Debugging
7 kyu
Debug Basic Calculator
4,595
Fosna
Fundamentals
Debugging
7 kyu
Class conundrum - Bug Fixing #7
2,199
matt c
2 Issues Reported
Debugging
6 kyu
Round and Round
1,016
Voile
Fundamentals
Debugging
8 kyu
Is this my tail?
28,359
PG1
Debugging
8 kyu
101 Dalmatians - squash the bugs, not the dogs!
28,045
PG1
1 Issue Reported
Debugging
Fundamentals
8 kyu
FIXME: Replace all dots
32,920
dinglemouse
Debugging
Regular Expressions
8 kyu
Capitalization and Mutability
40,450
kolohelios
Strings
Debugging
8 kyu
Basic variable assignment
47,789
Ira
1 Issue Reported
Debugging
8 kyu
Array plus array
89,997
Dmitry Kudla
1 Issue Reported
Fundamentals
Arrays
Debugging
8 kyu
Get Planet Name By ID
75,727
jhoffner
4 Issues Reported
Debugging
8 kyu
Jenny's secret message
112,942
bkaes
3 Issues Reported
Debugging
Loading...
Confirm
Collect:
undefined
Loading collection data...