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
Algorithms
8
Arrays
6
Bits
1
Data Structures
1
Fundamentals
4
Lists
13
Mathematics
1
Number Theory
1
Performance
1
Puzzles
1
Queues
1
Recursion
13
Sets
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
13 Kata Found
Beta
Highest Average Depth
15
DrillToHeaven
Status:
Testing & feedback needed
Estimated Rank:
6 kyu
Lists
Arrays
Recursion
6 kyu
The Hackers’ Taunt
67
DrillToHeaven
Lists
Arrays
Recursion
7 kyu
Sum of a nested list
3,176
kingcobra
Recursion
Lists
Algorithms
Fundamentals
6 kyu
English beggars
9,586
GiacomoSorbi
1 Issue Reported
Queues
Arrays
Lists
Recursion
Fundamentals
5 kyu
A self-descriptive fractal sequence
95
Paul Robertson
Algorithms
Lists
Number Theory
Recursion
5 kyu
Hofstadter's Figure-Figure sequence
106
Paul Robertson
Lists
Algorithms
Recursion
Performance
6 kyu
Fibonacci on roids
521
GiacomoSorbi
1 Issue Reported
Recursion
Lists
Arrays
Algorithms
6 kyu
Basic Bitmapping
491
spcbrn
1 Issue Reported
Bits
Arrays
Sets
Lists
Algorithms
Recursion
6 kyu
Sum Up to Target Non Adjacents elements
168
knotman90
Lists
Recursion
Fundamentals
6 kyu
Array Hyperrectangularity
65
sgerodes
Mathematics
Arrays
Recursion
Algorithms
Data Structures
Lists
4 kyu
Hypercube Lists
75
Wintro
1 Issue Reported
Algorithms
Lists
Recursion
6 kyu
Recursion puzzle
272
Chris_Rands
1 Issue Reported
Puzzles
Recursion
Lists
6 kyu
Unpack
270
filipkonieczny
Fundamentals
Algorithms
Lists
Recursion
Confirm
Collect:
undefined
Loading collection data...