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
Algebra
9
Algorithms
206
Arrays
15
Binary
2
Bits
2
Combinatorics
3
Compilers
1
Data Structures
68
Date Time
2
Discrete Mathematics
1
Dynamic Programming
4
Fundamentals
206
Games
1
Geometry
15
Graphics
1
Lists
2
Logic
48
Mathematics
206
Matrix
3
Memoization
9
Metaprogramming
1
Number Theory
2
Object-oriented Programming
1
Parsing
3
Performance
19
Permutations
7
Probability
1
Puzzles
11
Recursion
5
Regular Expressions
2
Restricted
3
Searching
1
Sorting
14
Strings
35
Theorem Proving
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
206 Kata Found
6 kyu
Cut me in Pieces but in The Way I Like
189
raulbc777
Fundamentals
Algorithms
Mathematics
6 kyu
Help Kiyo きよ solve her problems LCM Fun!
497
user8476848
Algorithms
Data Structures
Mathematics
Fundamentals
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
Sort rectangles and circles by area II
2,863
JohanWiltink
Fundamentals
Algorithms
Sorting
Mathematics
Geometry
5 kyu
Sum and Rest the Number with its Reversed and See What Happens
1,382
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Algorithms
Memoization
Dynamic Programming
6 kyu
Selecting Quotients From an Array
276
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Sorting
Mathematics
Logic
6 kyu
Find a Bunch of Common Elements of Two Lists in a Certain Range
911
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Working With Coloured Numbers
395
raulbc777
2 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
Recursion
Dynamic Programming
7 kyu
Total Sums of Coefficients of a Binomial Raised to the Nth-Power
378
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
4 kyu
Square and Cube of a Number Become Prime When Reversed
661
raulbc777
2 Issues Reported
Fundamentals
Mathematics
Memoization
Algorithms
8 kyu
Keep Hydrated!
232,860
paulrichard
Algorithms
Mathematics
Fundamentals
6 kyu
Remove a Specific Element of an Array
949
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
5 kyu
Primes in the Last Digits of Huge Numbers
140
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Algorithms
Data Structures
5 kyu
Pandigital Powers
144
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Map and Filter to Get a Special Sequence of Integers
133
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Generate Numbers From Digits #2
111
raulbc777
Fundamentals
Logic
Strings
Data Structures
Algorithms
Mathematics
Number Theory
Permutations
6 kyu
Generating Numbers From Digits #1
368
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Find the Partition with Maximum Product Value
424
raulbc777
3 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
6 kyu
Reach Me and Sum my Digits
3,368
raulbc777
Fundamentals
Algorithms
Mathematics
5 kyu
Find All the Possible Numbers Multiple of 3 with the Digits of a Positive Integer.
297
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
Permutations
6 kyu
Estimating Amounts of Subsets
2,266
raulbc777
4 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Building a Sequence Cocatenating Digits with a Given Order.
193
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
6 kyu
Allergy to Palindromes.
470
raulbc777
Fundamentals
Algorithms
Mathematics
Performance
Permutations
6 kyu
Abundant Numbers
639
user2821739
3 Issues Reported
Fundamentals
Mathematics
Algorithms
6 kyu
#8 Matrices: Up and Down Sorting For Each Column
512
raulbc777
Fundamentals
Algorithms
Data Structures
Mathematics
Matrix
Sorting
5 kyu
Tri-Bicolor Tiling
170
Bubbler
Fundamentals
Algorithms
Mathematics
6 kyu
Triangles made of random points
239
Muchacos
Mathematics
Geometry
Algorithms
Arrays
Performance
Fundamentals
7 kyu
Help the farmer to count rabbits, chickens and cows
1,041
andriyrom
2 Issues Reported
Fundamentals
Algorithms
Mathematics
6 kyu
Integer with the longest Collatz sequence
886
jsms90
Algorithms
Mathematics
Fundamentals
5 kyu
Poker cards reducer
245
thisFeeling
Fundamentals
Strings
Mathematics
Algorithms
Loading...
Confirm
Collect:
undefined
Loading collection data...