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
ASCII Art
1
Algebra
3
Algorithms
162
Arrays
28
Big Integers
2
Binary
2
Binary Trees
1
Ciphers
1
Combinatorics
5
Cryptography
2
Data Structures
10
Dynamic Programming
11
Functional Programming
1
Fundamentals
29
Game Solvers
1
Games
7
Geometry
3
Graph Theory
2
Graphs
1
Linked Lists
1
Lists
2
Logic
9
Machine Learning
1
Mathematics
52
Matrix
2
Memoization
4
Number Theory
10
Object-oriented Programming
2
Parsing
1
Performance
162
Permutations
1
Puzzles
28
Recursion
9
Refactoring
1
Regular Expressions
1
Restricted
1
Riddles
1
Set Theory
1
Sorting
6
Strings
11
Trees
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
162 Kata Found
Beta
Maximum Sum of a Subarray of Fixed Size
16
arinjayg
Status:
Testing & feedback needed
Estimated Rank:
6 kyu
Algorithms
Arrays
Data Structures
Fundamentals
Performance
6 kyu
Find the unique number
155,941
isqua
3 Issues Reported
Fundamentals
Algorithms
Arrays
Performance
2 kyu
Chess - checkmate with rook in 16 moves
46
user6793616
2 Issues Reported
Games
Performance
Algorithms
5 kyu
Reaching a number by x3 or +5 (or is it possible?)
116
WestwardLand968
Algorithms
Recursion
Mathematics
Logic
Performance
5 kyu
Total Displacement of All Morphing Sets
25
Simple Rick
Algorithms
Performance
6 kyu
Not prime numbers
1,551
riyakayal
Fundamentals
Performance
Algorithms
5 kyu
The Midnight Escape
123
dfhwze
Algorithms
Riddles
Performance
7 kyu
The Poet And The Pendulum
4,856
MrZizoScream
4 Issues Reported
Fundamentals
Arrays
Algorithms
Performance
5 kyu
Jump to zero (Subtask 4)
62
TLEojxSunlight
1 Issue Reported
Mathematics
Algorithms
Dynamic Programming
Performance
Number Theory
5 kyu
Following Sierpinski's Footprints
57
raulbc777
Algorithms
Performance
Number Theory
Fundamentals
5 kyu
Almost Isosceles Integer Triangles With Their Angles With Asymptotic Tendency
71
raulbc777
Algorithms
Performance
Number Theory
Recursion
Geometry
Fundamentals
5 kyu
(Insane) N Warriors and a Lamp
167
Bubbler
Puzzles
Performance
Logic
Algorithms
5 kyu
Simple Fun #359: Cut The Number
145
myjinxin2015
Algorithms
Performance
5 kyu
Simple Fun #383: Counting Sheep II
39
myjinxin2015
Algorithms
Performance
6 kyu
Pentabonacci
2,215
raulbc777
4 Issues Reported
Fundamentals
Mathematics
Algorithms
Performance
Dynamic Programming
6 kyu
Simple Fun #393: Lonely Frog V
89
myjinxin2015
Algorithms
Puzzles
Performance
4 kyu
Maze Keeper
22
myjinxin2015
Algorithms
Puzzles
Games
Performance
5 kyu
GA-DE-RY-PO-LU-KI cypher vol 4 - Missing key madness
102
dcieslak
1 Issue Reported
Performance
Algorithms
Ciphers
Cryptography
5 kyu
The Primes as a Result of the Longest Consecutive Sum I
197
raulbc777
Performance
Algorithms
Mathematics
Data Structures
Arrays
Fundamentals
6 kyu
Number Zoo Patrol
6,257
shawkinsl
Algorithms
Performance
Mathematics
4 kyu
Big Big Big Padovan Number
614
Valek
Performance
Algorithms
Big Integers
6 kyu
Button Tap Sequence
34
dfhwze
Puzzles
Algorithms
Performance
5 kyu
Reversed Self Power
184
raulbc777
2 Issues Reported
Fundamentals
Mathematics
Algorithms
Performance
6 kyu
Crossing the river and its tributaries
49
rPersival
Algorithms
Strings
Performance
5 kyu
Maximum subarray sum
84,640
knotman90
3 Issues Reported
Algorithms
Lists
Dynamic Programming
Fundamentals
Performance
4 kyu
Largest Numeric Palindrome
671
qaiken
1 Issue Reported
Algorithms
Performance
4 kyu
The smallest number with a given number of divisors
171
user8729270
Mathematics
Recursion
Algorithms
Number Theory
Performance
5 kyu
Hofstadter's Figure-Figure sequence
108
Paul Robertson
Lists
Algorithms
Recursion
Performance
5 kyu
(m, k)-Perfect Number
62
MicheDev
Mathematics
Performance
Algorithms
2 kyu
Pisano Period - Performance Edition
92
topologoanatom
1 Issue Reported
Performance
Mathematics
Number Theory
Algorithms
Loading...
Confirm
Collect:
undefined
Loading collection data...