Kata
Sign Up
Kata
Kumite
Forum
Wiki
Leaders
Log In
Sign Up
Library
Collections
Sort by:
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Recently Published
Hardest
Easiest
Name
Language:
All
My Languages
Agda (Beta)
BF (Beta)
C
Clojure
CoffeeScript
Coq (Beta)
C++
Crystal
C#
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy (Beta)
Haskell
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin (Beta)
Lua (Beta)
NASM (Beta)
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
PHP
PowerShell (Beta)
PureScript (Beta)
Python
R (Beta)
Racket (Beta)
Reason (Beta)
Ruby
Rust
Scala (Beta)
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Status:
Approved & Beta
Approved
Beta
Progress:
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
Difficulty:
8 kyu
8 kyu
7 kyu
7 kyu
6 kyu
6 kyu
5 kyu
5 kyu
4 kyu
4 kyu
3 kyu
3 kyu
2 kyu
2 kyu
1 kyu
1 kyu
Tags:
Fundamentals (4001)
Algorithms (2953)
Data Types (2424)
Logic (2145)
Numbers (1272)
Strings (1167)
Puzzles (1157)
Arrays (1011)
Games (977)
Mathematics (968)
Basic Language Features (838)
Programming Paradigms (791)
Data Structures (567)
Control Flow (551)
Declarative Programming (488)
Advanced Language Features (345)
Regular Expressions (263)
Object-oriented Programming (242)
Functions (210)
Lists (208)
Functional Programming (173)
Arithmetic (170)
Loops (167)
Objects (141)
Bugs (131)
Data (126)
Algebra (125)
Theoretical Computer Science (114)
Security (111)
Performance (109)
Sorting (105)
Parsing (103)
Computability Theory (100)
Recursion (100)
Binary (95)
Classes (95)
Integers (93)
Optimization (91)
Utilities (86)
Cryptography (85)
Geometry (85)
Databases (83)
Information Systems (83)
SQL (81)
Graphs (79)
Dates/Time (73)
Sequences (64)
Design Principles (61)
Design Patterns (59)
Formatting (51)
2733 Kata Found
7 kyu
Holiday II - Plane Seating
3
3
2
91%
of
39
96
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Pairs of Bears
4
4
3
94%
of
39
111
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Alan Partridge II - Apple Turnover
16
16
15
82%
of
523
2,980
A.Partridge
Fundamentals
Numbers
Strings
Mathematics
Algorithms
8 kyu
The Wide-Mouthed frog!
17
17
7
86%
of
564
3,282
nbeck
Fundamentals
Strings
5 kyu
Recipe DSL
5
5
0
89%
of
9
21
phaul
Fundamentals
Domain Specific Languages
Declarative Programming
6 kyu
Vowels Back
27
27
4
83%
of
93
338
A.Partridge
2 Issues Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Ease the StockBroker
128
128
23
75%
of
227
1,065
g964
Fundamentals
Strings
7 kyu
Thinking & Testing : Uniq or not Uniq
29
29
8
91%
of
233
905
myjinxin2015
2 Issues Reported
Puzzles
Games
3 kyu
Alphametics Solver
114
114
25
94%
of
25
95
docgunthrop
Algorithms
Puzzles
Games
Performance
Optimization
Cryptography
Security
7 kyu
Thinking & Testing: A and B?
74
74
22
77%
of
339
1,676
myjinxin2015
Puzzles
Games
6 kyu
Errors : histogram
38
38
18
90%
of
212
1,034
g964
Fundamentals
Strings
6 kyu
Positions Average
93
93
20
87%
of
222
1,036
g964
Fundamentals
Strings
5 kyu
Blackjack Scorer
58
58
10
90%
of
154
1,082
jodymgustafson
Algorithms
Rules
Games
8 kyu
Do I get a bonus?
129
129
55
88%
of
2,702
19,834
A.Partridge
Algorithms
Booleans
Strings
Numbers
7 kyu
The wheat/rice and chessboard problem
49
49
10
92%
of
257
1,150
GiacomoSorbi
Puzzles
Mathematics
Algorithms
Numbers
Bitwise Operators
Bits
Operators
Advanced Language Features
Binary
Fundamentals
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
Vowel-consonant lexicon
19
19
5
91%
of
88
266
KenKamau
Algorithms
Strings
Arrays
8 kyu
Regexp Basics - is it a digit?
102
102
41
85%
of
745
5,318
taw
5 Issues Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
6 kyu
The Supermarket Queue
1609
1609
346
93%
of
2,537
14,036
mattlub
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Stringing me along
36
36
19
93%
of
210
2,146
shinchy
Fundamentals
Functional Programming
Declarative Programming
6 kyu
Tetris Series #2 — Primitive Gameplay
8
8
1
95%
of
19
46
Etoneja
Fundamentals
Games
Algorithms
Basic Language Features
Loops
Control Flow
Arrays
5 kyu
Iterative Rotation Cipher
75
75
31
96%
of
61
200
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
5 kyu
Dots and Boxes Validator
40
40
14
100%
of
30
118
docgunthrop
Algorithms
Games
7 kyu
Remove anchor from URL
94
94
29
85%
of
965
9,878
jhoffner
1 Issue Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
6 kyu
Build a pile of Cubes
1201
1201
146
85%
of
4,693
32,653
g964
1 Issue Reported
Fundamentals
Optimization
6 kyu
Playing with passphrases
386
386
63
89%
of
1,025
5,948
g964
Algorithms
Chars
Strings
Encoding
6 kyu
Create Phone Number
604
604
182
82%
of
6,020
54,835
xDranik
Algorithms
Arrays
Strings
Loops
Control Flow
Basic Language Features
Fundamentals
Formatting
Regular Expressions
Declarative Programming
Advanced Language Features
5 kyu
Master your primes: sieve with memoization
26
26
12
82%
of
25
68
GiacomoSorbi
Algorithms
Memoization
Design Patterns
Design Principles
Optimization
8 kyu
Yield to the Block
28
28
3
89%
of
94
2,449
agram
1 Issue Reported
Fundamentals
Blocks
Object-oriented Programming
Functions
Control Flow
Basic Language Features
Functional Programming
Declarative Programming
Higher-order Functions
5 kyu
Integers: Recreation One
905
905
161
88%
of
1,532
9,819
g964
Fundamentals
Algorithms
Optimization
6 kyu
Playing on a chessboard
296
296
39
86%
of
449
2,322
g964
Fundamentals
Puzzles
Games
Loading...
Confirm