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
5
Algorithms
97
Arrays
9
Binary
1
Combinatorics
1
Data Science
1
Data Structures
97
Dynamic Programming
4
Fundamentals
68
Games
2
Geometry
9
Graph Theory
1
Interpreters
1
Linear Algebra
1
Lists
1
Logic
38
Mathematics
97
Matrix
2
Memoization
7
Number Theory
2
Object-oriented Programming
1
Parsing
1
Performance
9
Permutations
7
Puzzles
2
Recursion
9
Regular Expressions
1
Searching
1
Sorting
12
Strings
24
Trees
3
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
97 Kata Found
Beta
The Futurama Mind-Switcher machine
9
Donvito-911
Status:
Ranking feedback needed
Estimated Rank:
2 kyu
Algorithms
Data Structures
Mathematics
6 kyu
How Many Numbers?
1,162
raulbc777
3 Issues Reported
Fundamentals
Algorithms
Mathematics
Data Structures
4 kyu
How many numbers III?
4,655
raulbc777
4 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
5 kyu
How Many Numbers? II
1,491
raulbc777
2 Issues Reported
Algorithms
Data Structures
Mathematics
Fundamentals
5 kyu
Help Suzuki pack his coal basket!
296
user8476848
Dynamic Programming
Algorithms
Data Structures
Mathematics
6 kyu
Help Kiyo きよ solve her problems LCM Fun!
506
user8476848
Algorithms
Data Structures
Mathematics
Fundamentals
6 kyu
AD2070: Help Lorimar troubleshoot his robots-Search and Disable
246
user8476848
1 Issue Reported
Data Structures
Mathematics
Algorithms
Data Science
6 kyu
A Combinatorial Way to Get Products and Sums of an Array
198
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Data Structures
Algorithms
4 kyu
Permutational Primes
573
raulbc777
1 Issue Reported
Algorithms
Sorting
Permutations
Mathematics
Memoization
Data Structures
6 kyu
Selecting Quotients From an Array
279
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
918
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Working With Coloured Numbers
400
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
381
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
5 kyu
The Sum and The Rest of Certain Pairs of Numbers have to be Perfect Squares (more Challenging)
193
raulbc777
1 Issue Reported
Algorithms
Mathematics
Data Structures
5 kyu
Sequence of Power Digits Sum
537
raulbc777
1 Issue Reported
Algorithms
Recursion
Data Structures
Mathematics
6 kyu
Remove a Specific Element of an Array
960
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
5 kyu
Primes in the Last Digits of Huge Numbers
142
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Algorithms
Data Structures
5 kyu
Prime Sextuplets
462
raulbc777
4 Issues Reported
Algorithms
Mathematics
Sorting
Data Structures
Memoization
5 kyu
Pandigital Powers
146
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Map and Filter to Get a Special Sequence of Integers
134
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
371
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Find the Partition with Maximum Product Value
428
raulbc777
3 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
5 kyu
Find All the Possible Numbers Multiple of 3 with the Digits of a Positive Integer.
303
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
Permutations
6 kyu
Estimating Amounts of Subsets
2,283
raulbc777
4 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
5 kyu
Building a Sequence Cocatenating Digits with a Given Order.
194
raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
6 kyu
#8 Matrices: Up and Down Sorting For Each Column
520
raulbc777
Fundamentals
Algorithms
Data Structures
Mathematics
Matrix
Sorting
5 kyu
Faulty Data Recovery
137
guioconnor
Arrays
Algorithms
Mathematics
Data Structures
Beta
Next Higher Value #3
15
raulbc777
1 Issue Reported
Status:
Waiting for issues to be resolved
Estimated Rank:
4 kyu
Performance
Algorithms
Mathematics
Data Structures
Arrays
Recursion
Memoization
Dynamic Programming
Fundamentals
5 kyu
Numbers that are a power of their sum of digits
2,141
raulbc777
3 Issues Reported
Algorithms
Mathematics
Sorting
Data Structures
Fundamentals
Loading...
Confirm
Collect:
undefined
Loading collection data...