Kata Library
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
ASCII Art
9
Algorithms
86
Arrays
258
Binary
2
Bits
3
Ciphers
3
Combinatorics
1
Cryptography
3
Data Science
1
Data Structures
21
Date Time
1
Esoteric Languages
4
Functional Programming
17
Fundamentals
179
Games
9
Interpreters
4
Lists
8
Logic
7
Mathematics
11
Matrix
3
Object-oriented Programming
2
Parsing
8
Performance
2
Permutations
1
Puzzles
17
Recursion
3
Refactoring
2
Regular Expressions
21
Restricted
3
Riddles
1
Security
2
Sorting
14
Statistics
1
Streams
1
Strings
258
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
258 Kata Found
6 kyu
Alex & snooker: points earned.
414
nekokat
1 Issue Reported
Strings
Arrays
Beta
Build a Simple Spellchecker
6
brodiemark
Status:
Ranking feedback needed
Estimated Rank:
4 kyu
Strings
Arrays
Lists
6 kyu
Mexican Wave
73,868
adrian.eyre
3 Issues Reported
Arrays
Strings
Fundamentals
8 kyu
Sort and Star
52,475
PG1
2 Issues Reported
Fundamentals
Strings
Arrays
Sorting
8 kyu
Is there a vowel in there?
15,873
PG1
2 Issues Reported
Fundamentals
Strings
Arrays
7 kyu
Array Array Array
4,606
PG1
Fundamentals
Strings
Arrays
6 kyu
Pine's Deaf Grandma
476
srMarquinho
Strings
Arrays
Fundamentals
6 kyu
Create a frame!
1,685
gabrielsiedler
Strings
Arrays
ASCII Art
Fundamentals
7 kyu
Return a string's even characters.
8,291
tu6619
Fundamentals
Strings
Arrays
Beta
Who’s That Man in the Picture?
17
Bree-Mass
Status:
Testing & feedback needed
Estimated Rank:
6 kyu
Logic
Strings
Arrays
Parsing
Fundamentals
Riddles
7 kyu
Name Array Capping
8,772
ogryzek
1 Issue Reported
Strings
Arrays
Fundamentals
7 kyu
Partial Word Searching
8,121
obnounce
4 Issues Reported
Arrays
Strings
Fundamentals
6 kyu
Name to Matrix
983
Coder_38
1 Issue Reported
Strings
Arrays
Algorithms
Matrix
6 kyu
IntroToArt
903
citharista
1 Issue Reported
Arrays
Strings
ASCII Art
Fundamentals
7 kyu
Coding Meetup #3 - Higher-Order Functions Series - Is Ruby coming?
10,983
PiotrBerebecki
Data Structures
Fundamentals
Algorithms
Strings
Regular Expressions
Arrays
Functional Programming
7 kyu
Scrolling Text
5,164
AndrasG
4 Issues Reported
Strings
Arrays
Fundamentals
7 kyu
Holiday II - Plane Seating
2,165
PG1
1 Issue Reported
Fundamentals
Strings
Arrays
7 kyu
2 DNAs sequences, coding for same protein?
426
nbeck
1 Issue Reported
Strings
Algorithms
Arrays
7 kyu
Driving Licence
3,920
adrian.eyre
4 Issues Reported
Strings
Arrays
Fundamentals
8 kyu
You only need one - Beginner
155,752
PG1
3 Issues Reported
Fundamentals
Strings
Arrays
7 kyu
Drone Fly-By
7,133
PG1
Fundamentals
Strings
Arrays
7 kyu
Numbers to Letters
8,413
PG1
Fundamentals
Strings
Arrays
7 kyu
Char Code Calculation
12,226
PG1
2 Issues Reported
Fundamentals
Arrays
Strings
Mathematics
7 kyu
Sort by Last Char
10,026
PG1
1 Issue Reported
Fundamentals
Strings
Arrays
Sorting
7 kyu
Find the capitals
45,555
ankr
1 Issue Reported
Strings
Arrays
Fundamentals
6 kyu
Autocomplete! Yay!
6,024
yaphi1
2 Issues Reported
Strings
Regular Expressions
Arrays
Fundamentals
7 kyu
Alphabetize a list by the nth character
2,035
edm2410
5 Issues Reported
Lists
Strings
Sorting
Arrays
Fundamentals
6 kyu
I love big nums and I cannot lie
839
joh_pot
1 Issue Reported
Strings
Arrays
Algorithms
7 kyu
Celebrity Baby Names
770
Cleop
Fundamentals
Arrays
Strings
6 kyu
Highest Scoring Word
105,819
PG1
1 Issue Reported
Fundamentals
Strings
Arrays
Loading...
Confirm
Collect:
undefined
Loading collection data...