Kata Library: Java 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
Algorithms
23
Arrays
4
Dynamic Programming
1
Fundamentals
3
Games
1
Graph Theory
1
Linear Algebra
5
Logic
1
Mathematics
6
Matrix
23
Performance
3
Puzzles
6
Recursion
1
Restricted
1
Strings
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
23 Kata Found
5 kyu
Square Matrix Multiplication
7,722
xDranik
1 Issue Reported
Matrix
Linear Algebra
Algorithms
5 kyu
Walking in the NASA facility
83
MelonFruit
Matrix
Fundamentals
Algorithms
Puzzles
7 kyu
Principal Diagonal | VS | Secondary Diagonal
2,631
CRYPTON
Fundamentals
Matrix
Algorithms
6 kyu
Arrange Matrix by Diagonals -- OMG
160
Jomopipi
1 Issue Reported
Algorithms
Matrix
6 kyu
|||clickbait||| Matrix Shift |||clickbait|||
230
Jomopipi
Matrix
Performance
Puzzles
Algorithms
5 kyu
One-Semicolon Matrix Multiplication
93
phantamanta44
Linear Algebra
Matrix
Algorithms
Puzzles
Restricted
5 kyu
The Bee
273
EgorArh
Algorithms
Mathematics
Matrix
Puzzles
Performance
Dynamic Programming
6 kyu
Setting Places for the Dead
350
rowcased
Algorithms
Matrix
6 kyu
Cure Cancer
382
Jomopipi
1 Issue Reported
Matrix
Arrays
Algorithms
6 kyu
Checkerboard Resolution
439
Kacarott
Performance
Algorithms
Matrix
5 kyu
Rotate a square matrix like a vortex
584
user5036852
Logic
Arrays
Algorithms
Matrix
2 kyu
6 By 6 Skyscrapers
2,520
FrankK
4 Issues Reported
Mathematics
Puzzles
Games
Arrays
Matrix
Algorithms
4 kyu
Magnet particules in boxes
7,791
g964
1 Issue Reported
Mathematics
Matrix
Algorithms
6 kyu
Matrix Addition
13,983
xDranik
3 Issues Reported
Matrix
Arrays
Algorithms
4 kyu
Matrix Determinant
24,172
pjfranzini
8 Issues Reported
Matrix
Linear Algebra
Mathematics
Recursion
Algorithms
6 kyu
Same matrix (2 * 2)
652
trudbot
Algorithms
Matrix
Beta
Mondrian regions
6
mario.gg
Status:
Ranking feedback needed
Estimated Rank:
5 kyu
Algorithms
Matrix
Graph Theory
Beta
2D landscape
7
mbesenzoni
Status:
Ranking feedback needed
Estimated Rank:
5 kyu
Algorithms
Matrix
6 kyu
Rotate matrix counter - clockwise N - times!
771
Hackito
Algorithms
Matrix
7 kyu
Product of the main diagonal of a square matrix.
3,680
ebracho
2 Issues Reported
Matrix
Linear Algebra
Algorithms
6 kyu
Matrix Multiplier
1,145
stevehopkinson
Matrix
Algorithms
Linear Algebra
Mathematics
Beta
Complete Spirals
12
oa998
2 Issues Reported
Status:
Waiting for issues to be resolved
Estimated Rank:
6 kyu
Matrix
Algorithms
6 kyu
Matrix Strings
126
Lusina
Algorithms
Mathematics
Puzzles
Fundamentals
Matrix
Strings
Confirm
Collect:
undefined
Loading collection data...