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
14
Algebra
52
Algorithms
795
Arrays
107
Big Integers
9
Binary
12
Bits
8
Cellular Automata
1
Ciphers
3
Combinatorics
38
Compilers
1
Cryptography
8
Data Science
15
Data Structures
118
Databases
1
Date Time
9
Debugging
2
Design Patterns
2
Discrete Mathematics
7
Dynamic Programming
25
Functional Programming
7
Fundamentals
602
Game Solvers
4
Games
39
Geometry
93
Graph Theory
10
Graphics
2
Graphs
2
Image Processing
1
Interpreters
4
Language Features
5
Linear Algebra
26
Lists
19
Logic
102
Machine Learning
9
Mathematics
1474
Matrix
30
Memoization
18
Metaprogramming
3
Networks
1
NumPy
2
Number Theory
65
Object-oriented Programming
12
Parsing
12
Performance
137
Permutations
26
Physics
4
Probability
28
Puzzles
183
Recursion
35
Refactoring
6
Regular Expressions
9
Restricted
50
Riddles
1
SQL
6
Searching
1
Security
4
Set Theory
3
Sets
2
Simulation
2
Sorting
25
Statistics
34
Streams
1
Strings
117
Theorem Proving
33
Trees
5
Tutorials
5
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
1,474 Kata Found
Beta
The Futurama Mind-Switcher machine
8
Donvito-911
Status:
Ranking feedback needed
Estimated Rank:
5 kyu
Algorithms
Data Structures
Mathematics
6 kyu
Cat Kata, Part 1
1,716
tachyonlabs
Mathematics
Fundamentals
7 kyu
Functions of Integers on Cartesian Plane
3,269
g964
1 Issue Reported
Fundamentals
Mathematics
6 kyu
Persistent Bugger.
208,908
joh_pot
Fundamentals
Mathematics
5 kyu
Fibonacci Factory Function
1,164
x-way
Mathematics
Algorithms
5 kyu
Calculate Variance
2,737
eerwitt
3 Issues Reported
Statistics
Mathematics
Algorithms
7 kyu
Weight of its Contents
2,701
dnolan
2 Issues Reported
Algorithms
Mathematics
5 kyu
Become The Ultimate Phychic
279
spacewalker
2 Issues Reported
Mathematics
Logic
Algorithms
Puzzles
4 kyu
Explosive Sum
9,185
surtich
2 Issues Reported
Algorithms
Mathematics
Fundamentals
6 kyu
Multi-Base Numbers
62
LuggiStruggi
Algorithms
Mathematics
7 kyu
Finding Remainder Without Using '%' Operator
2,996
DivyanshBatham
2 Issues Reported
Mathematics
Restricted
Algorithms
5 kyu
Integer complexity
38
YurichBRO
Mathematics
Number Theory
Performance
Beta
How many socks for a pair?
32
xcn
Status:
Awaiting approval
Estimated Rank:
7 kyu
Fundamentals
Mathematics
7 kyu
Driving School Series #2
3,761
kkavita92
1 Issue Reported
Mathematics
Fundamentals
7 kyu
Cartesian neighbors
3,452
febonachi
2 Issues Reported
Fundamentals
Mathematics
7 kyu
Count number of Turing Machines with N rules
83
Jomopipi
Combinatorics
Mathematics
8 kyu
Volume of a Cuboid
120,584
user5196477
Geometry
Fundamentals
Mathematics
8 kyu
Twice as old
82,052
petrosernivka
Fundamentals
Mathematics
5 kyu
Sliceprimes
47
MatttNguyen
Mathematics
Algorithms
8 kyu
Keep Hydrated!
235,678
paulrichard
1 Issue Reported
Algorithms
Mathematics
Fundamentals
7 kyu
Matrix Addition of Elements
1,290
S!D
Matrix
Fundamentals
Arrays
Mathematics
7 kyu
Square Every Digit
334,328
MysteriousMagenta
2 Issues Reported
Mathematics
Fundamentals
5 kyu
Diophantine Equation
5,022
g964
1 Issue Reported
Fundamentals
Mathematics
Algebra
7 kyu
Recursion #2 - Fibonacci
3,201
gabrielsiedler
1 Issue Reported
Fundamentals
Recursion
Mathematics
7 kyu
Numbers Which Sum of Powers of Its Digits Is The Same Number
3,368
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Data Structures
4 kyu
Simplifying multilinear polynomials
5,118
SleepingCode
3 Issues Reported
Mathematics
Strings
Regular Expressions
Parsing
Fundamentals
6 kyu
Loose Change
6,214
ghost_pilot
1 Issue Reported
Mathematics
Fundamentals
3 kyu
Screen Locking Patterns
5,146
rsalgado
2 Issues Reported
Mathematics
Combinatorics
Geometry
Algorithms
Graph Theory
5 kyu
Reaching a number by x3 or +5 (or is it possible?)
113
WestwardLand968
Algorithms
Recursion
Mathematics
Logic
Performance
4 kyu
Number of Proper Fractions with Denominator d
5,587
GiacomoSorbi
4 Issues Reported
Fundamentals
Mathematics
Loading...
Confirm
Collect:
undefined
Loading collection data...