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
6
Algebra
25
Algorithms
795
Arrays
59
Big Integers
6
Binary
6
Bits
5
Cellular Automata
1
Ciphers
2
Combinatorics
23
Compilers
1
Cryptography
5
Data Science
8
Data Structures
97
Date Time
7
Discrete Mathematics
4
Dynamic Programming
20
Functional Programming
2
Fundamentals
206
Game Solvers
2
Games
20
Geometry
53
Graph Theory
8
Graphics
1
Graphs
1
Image Processing
1
Interpreters
4
Language Features
3
Linear Algebra
13
Lists
7
Logic
74
Machine Learning
9
Mathematics
795
Matrix
15
Memoization
15
Metaprogramming
2
Networks
1
NumPy
1
Number Theory
30
Object-oriented Programming
6
Parsing
11
Performance
89
Permutations
15
Physics
2
Probability
7
Puzzles
69
Recursion
25
Refactoring
2
Regular Expressions
4
Restricted
15
Searching
1
Security
3
Set Theory
2
Sets
2
Simulation
1
Sorting
20
Statistics
10
Streams
1
Strings
62
Theorem Proving
9
Trees
5
Tutorials
2
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
795 Kata Found
7 kyu
Powers of 3
3,740
kjytay
2 Issues Reported
Mathematics
Algorithms
6 kyu
Matrix Trace
1,324
chipit24
Linear Algebra
Mathematics
Matrix
Algorithms
7 kyu
Orthogonal Vectors
1,929
user3043623
4 Issues Reported
Physics
Mathematics
Algorithms
6 kyu
Build a pile of Cubes
89,333
g964
2 Issues Reported
Mathematics
Algorithms
6 kyu
Cut me in Pieces but in The Way I Like
187
raulbc777
Fundamentals
Algorithms
Mathematics
5 kyu
Catch the Bus - Continuous Edition
66
uttumuttu
Mathematics
Probability
Algorithms
4 kyu
Matrix Determinant
24,412
pjfranzini
8 Issues Reported
Matrix
Linear Algebra
Mathematics
Recursion
Algorithms
6 kyu
Multiples of 3 and 5 redux
2,038
yumaikas
Algorithms
Mathematics
5 kyu
Largest product in a series
3,972
JaniL
Mathematics
Algorithms
5 kyu
Convert to base -1+i
39
CrSb0001
Mathematics
Algorithms
5 kyu
Mean Square Error
22,446
kylehill
Arrays
Mathematics
Algorithms
6 kyu
Mutual Recursion
8,739
dnolan
1 Issue Reported
Mathematics
Algorithms
Recursion
7 kyu
Statistics Algorithm - Calculate Sample Space
479
Fluffy
Mathematics
Algorithms
6 kyu
Last non-zero digit of factorial
486
mauro-1
Mathematics
Algorithms
5 kyu
Exponent method
1,328
craecke
Mathematics
Algorithms
7 kyu
Weight of its Contents
2,646
dnolan
3 Issues Reported
Algorithms
Mathematics
6 kyu
Sum of Digits / Digital Root
289,328
user578387
3 Issues Reported
Mathematics
Algorithms
4 kyu
Trailing zeros in factorials, in any given integer base
639
Dr Phil
Mathematics
Algorithms
4 kyu
Adding Big Numbers
34,101
Becojo
4 Issues Reported
Mathematics
Big Integers
Algorithms
5 kyu
Help Suzuki pack his coal basket!
283
user8476848
Dynamic Programming
Algorithms
Data Structures
Mathematics
6 kyu
Help Kiyo きよ solve her problems LCM Fun!
497
user8476848
Algorithms
Data Structures
Mathematics
Fundamentals
6 kyu
AD2070: Help Lorimar troubleshoot his robots-Search and Disable
236
user8476848
1 Issue Reported
Data Structures
Mathematics
Algorithms
Data Science
6 kyu
A Fun Way of Finding Pythagorean Triples
299
brodiemark
Geometry
Mathematics
Algorithms
6 kyu
A Combinatorial Way to Get Products and Sums of an Array
194
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Data Structures
Algorithms
7 kyu
Reimplement Multiplication Part 1
817
DiegoSalazar
1 Issue Reported
Mathematics
Algorithms
7 kyu
Dee, The Generous Tipper
335
DiegoSalazar
Mathematics
Algorithms
7 kyu
Sort rectangles and circles by area II
2,863
JohanWiltink
Fundamentals
Algorithms
Sorting
Mathematics
Geometry
6 kyu
Summation Of Primes
775
maxwellmlin
Algorithms
Mathematics
4 kyu
Permutational Primes
555
raulbc777
1 Issue Reported
Algorithms
Sorting
Permutations
Mathematics
Memoization
Data Structures
6 kyu
Longest Consecutive Sequence of Squares
255
kodejuice
1 Issue Reported
Mathematics
Algorithms
Loading...
Confirm
Collect:
undefined
Loading collection data...