Kata Library: JavaScript 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
Algebra
1
Algorithms
12
Arrays
4
Combinatorics
12
Dynamic Programming
1
Fundamentals
2
Geometry
2
Graph Theory
1
Lists
1
Logic
1
Machine Learning
1
Mathematics
12
Number Theory
1
Performance
4
Permutations
2
Puzzles
1
Recursion
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
12 Kata Found
4 kyu
1 unique common number in every pair
121
Zzudo
Algorithms
Combinatorics
Arrays
Mathematics
Geometry
5 kyu
Josephus Permutation
16,701
GiacomoSorbi
1 Issue Reported
Mathematics
Permutations
Algorithms
Combinatorics
5 kyu
Josephus Survivor
16,840
GiacomoSorbi
1 Issue Reported
Mathematics
Combinatorics
Algorithms
Lists
Arrays
6 kyu
Lexicographic Permutations
172
mxwil
1 Issue Reported
Fundamentals
Algorithms
Combinatorics
Mathematics
Logic
6 kyu
Levels of Pascal's Pyramid
99
kylito
Arrays
Algorithms
Mathematics
Combinatorics
Recursion
3 kyu
Screen Locking Patterns
5,031
rsalgado
2 Issues Reported
Mathematics
Combinatorics
Geometry
Algorithms
Graph Theory
Beta
Balanced centrifuge configurator
6
dfhwze
Status:
Ranking feedback needed
Estimated Rank:
1 kyu
Algorithms
Puzzles
Mathematics
Combinatorics
Arrays
Performance
Algebra
Dynamic Programming
5 kyu
Shuffle It Up
575
raulbc777
Performance
Algorithms
Mathematics
Machine Learning
Combinatorics
Number Theory
4 kyu
Matunga coins
73
Hyyudu
Algorithms
Mathematics
Combinatorics
Performance
6 kyu
Rooks
353
sazzadshopno
Algorithms
Mathematics
Fundamentals
Combinatorics
4 kyu
Evil genius game - Find the moving chess piece while blindfolded
61
benjaminzwhite
Algorithms
Mathematics
Combinatorics
Performance
5 kyu
Number of players for knockout/round-robin hybrid contest (easy mode)
93
Ku3mi41
Combinatorics
Permutations
Mathematics
Algorithms
Confirm
Collect:
undefined
Loading collection data...