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
28
Arrays
8
Data Structures
5
Dynamic Programming
2
Fundamentals
28
Geometry
1
Lists
1
Logic
2
Mathematics
11
Memoization
1
Number Theory
3
Performance
28
Permutations
1
Puzzles
2
Recursion
2
Sorting
4
Strings
2
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
28 Kata Found
6 kyu
Not prime numbers
1,506
riyakayal
Fundamentals
Performance
Algorithms
6 kyu
Find the unique number
153,627
isqua
4 Issues Reported
Fundamentals
Algorithms
Arrays
Performance
7 kyu
The Poet And The Pendulum
4,826
MrZizoScream
4 Issues Reported
Fundamentals
Arrays
Algorithms
Performance
5 kyu
Following Sierpinski's Footprints
56
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
6 kyu
Pentabonacci
2,192
raulbc777
4 Issues Reported
Fundamentals
Mathematics
Algorithms
Performance
Dynamic Programming
5 kyu
The Primes as a Result of the Longest Consecutive Sum I
194
raulbc777
Performance
Algorithms
Mathematics
Data Structures
Arrays
Fundamentals
5 kyu
Reversed Self Power
181
raulbc777
2 Issues Reported
Fundamentals
Mathematics
Algorithms
Performance
5 kyu
Maximum subarray sum
83,892
knotman90
3 Issues Reported
Algorithms
Lists
Dynamic Programming
Fundamentals
Performance
6 kyu
Sums of Parts
25,472
g964
Fundamentals
Performance
Algorithms
5 kyu
Equivalent Dice
148
raulbc777
1 Issue Reported
Algorithms
Performance
Number Theory
Recursion
Fundamentals
Beta
LRU Cache with TTL Memoization
13
GnomGad
Status:
Awaiting approval
Estimated Rank:
4 kyu
Fundamentals
Algorithms
Memoization
Performance
6 kyu
Highest Perfect Square with Same Digits
248
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Performance
Permutations
4 kyu
Integer factorization: CFRAC basics
31
dolamroth
Mathematics
Algorithms
Fundamentals
Performance
6 kyu
Perform operation to make string empty
389
kaluginpeter
Algorithms
Logic
Puzzles
Fundamentals
Strings
Performance
6 kyu
Has the Largest Product Horizontal or Vertical Direction? Find it!!
134
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Algebra
Performance
7 kyu
Mysterious Singularity Numbers
1,530
mor1nch
Fundamentals
Logic
Mathematics
Arrays
Algorithms
Performance
6 kyu
Unknown Amount of Missing Numbers in an Unordered Array. (Hardcore version)
620
raulbc777
3 Issues Reported
Algorithms
Performance
Arrays
Fundamentals
6 kyu
Warm Up for Speed.
317
raulbc777
1 Issue Reported
Performance
Algorithms
Mathematics
Data Structures
Arrays
Sorting
Fundamentals
5 kyu
What Would They Have in Common?
86
raulbc777
1 Issue Reported
Mathematics
Strings
Data Structures
Sorting
Performance
Algorithms
Fundamentals
6 kyu
Unknown amount of duplicates. One missing number.
1,160
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Arrays
Algorithms
Sorting
Performance
Beta
Weighing on scales with pans (advanced)
9
zorl
Status:
Ranking feedback needed
Estimated Rank:
3 kyu
Fundamentals
Algorithms
Performance
5 kyu
Binary Simulation
123
sazzadshopno
4 Issues Reported
Performance
Fundamentals
Algorithms
5 kyu
Sports League Table Ranking (with Head-to-head)
38
cshw89
1 Issue Reported
Fundamentals
Algorithms
Arrays
Sorting
Performance
6 kyu
Simple Fun #375: Minimal Subtractor II
34
myjinxin2015
Fundamentals
Algorithms
Performance
3 kyu
Insane Tri-Bicolor Tiling
88
Bubbler
Algorithms
Fundamentals
Mathematics
Performance
Beta
Barbell weight
14
smolen
2 Issues Reported
Status:
Waiting for issues to be resolved
Estimated Rank:
5 kyu
Algorithms
Performance
Fundamentals
7 kyu
Largest prime number containing n digit
801
Noctisdark
1 Issue Reported
Algorithms
Puzzles
Fundamentals
Performance
Confirm
Collect:
undefined
Loading collection data...