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 (4002)
Algorithms (2956)
Data Types (2424)
Logic (2147)
Numbers (1273)
Strings (1167)
Puzzles (1157)
Arrays (1011)
Games (977)
Mathematics (969)
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 (110)
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)
1818 Kata Found
6 kyu
Vasya - Clerk
1752
1752
256
86%
of
4,164
27,834
AlexIsHappy
3 Issues Reported
Fundamentals
Mathematics
Algorithms
Numbers
Games
7 kyu
Sort by Last Char
47
47
11
89%
of
358
1,848
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
The 'if' function
118
118
30
70%
of
870
8,951
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
6 kyu
Vowels Back
32
32
6
84%
of
109
425
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
7 kyu
Thinking & Testing : Uniq or not Uniq
31
31
8
91%
of
248
980
myjinxin2015
2 Issues Reported
Puzzles
Games
3 kyu
Alphametics Solver
120
120
28
94%
of
25
97
docgunthrop
Algorithms
Puzzles
Games
Performance
Optimization
Cryptography
Security
7 kyu
Thinking & Testing: A and B?
75
75
24
77%
of
347
1,722
myjinxin2015
Puzzles
Games
5 kyu
Blackjack Scorer
61
61
11
90%
of
167
1,177
jodymgustafson
Algorithms
Rules
Games
4 kyu
Square into Squares. Protect trees!
1133
1133
174
93%
of
747
4,307
g964
Fundamentals
Mathematics
Algorithms
Numbers
Sequences
Arrays
6 kyu
The Supermarket Queue
1621
1621
347
93%
of
2,556
14,168
mattlub
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Tetris Series #2 — Primitive Gameplay
11
11
1
95%
of
19
49
Etoneja
Fundamentals
Games
Algorithms
Basic Language Features
Loops
Control Flow
Arrays
5 kyu
Dots and Boxes Validator
41
41
14
100%
of
32
120
docgunthrop
Algorithms
Games
6 kyu
Create Phone Number
613
613
186
82%
of
6,173
55,759
xDranik
Algorithms
Arrays
Strings
Loops
Control Flow
Basic Language Features
Fundamentals
Formatting
Regular Expressions
Declarative Programming
Advanced Language Features
8 kyu
Yield to the Block
28
28
3
89%
of
94
2,458
agram
1 Issue Reported
Fundamentals
Blocks
Object-oriented Programming
Functions
Control Flow
Basic Language Features
Functional Programming
Declarative Programming
Higher-order Functions
6 kyu
Playing on a chessboard
296
296
40
85%
of
452
2,346
g964
Fundamentals
Puzzles
Games
6 kyu
Tribonacci Sequence
1151
1151
227
88%
of
7,331
48,895
GiacomoSorbi
3 Issues Reported
Fundamentals
Sequences
Arrays
Arithmetic
Mathematics
Algorithms
Numbers
Lists
Data Structures
7 kyu
Descending Order
822
822
145
88%
of
8,481
62,700
TastyOs
1 Issue Reported
Fundamentals
Functions
Control Flow
Basic Language Features
2 kyu
Flou--Play game Series #9
13
13
3
95%
of
22
80
myjinxin2015
Puzzles
Games
4 kyu
Eight Queens Puzzle
18
18
5
86%
of
18
36
em-12
Puzzles
Algorithms
Games
6 kyu
Find last Fibonacci digit [hardcore version]
23
23
7
93%
of
115
377
GiacomoSorbi
Algorithms
Sequences
Arrays
Parsing
Strings
7 kyu
Testing 1-2-3
54
54
11
95%
of
1,180
4,879
acr
Fundamentals
Arrays
Iterators
Control Flow
Object-oriented Programming
Basic Language Features
4 kyu
How many numbers III?
342
342
59
94%
of
241
1,137
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Control Flow
Basic Language Features
Mathematics
Numbers
Declarative Programming
6 kyu
Numericals of a String
111
111
22
94%
of
349
1,977
Jomo Pipi
Algorithms
Games
Puzzles
Performance
7 kyu
Sum of Cubes
26
26
8
90%
of
448
2,900
MementoMori
Fundamentals
Control Flow
Basic Language Features
8 kyu
Area of a Square
52
52
20
89%
of
545
3,000
romerojp
Puzzles
Games
7 kyu
The PaperFold sequence
30
30
19
87%
of
55
244
JohanWiltink
Algorithms
Sequences
Arrays
Numbers
7 kyu
The Baum-Sweet sequence
18
18
5
87%
of
59
205
JohanWiltink
Algorithms
Sequences
Arrays
Numbers
7 kyu
Simple Fun #87: Shuffled Array
14
14
8
94%
of
189
595
myjinxin2015
Puzzles
Games
6 kyu
Longest palindrome
28
28
9
90%
of
93
316
georgesykes86
Algorithms
Loops
Control Flow
Basic Language Features
Fundamentals
Arrays
Strings
6 kyu
JSON Class Decorator
13
13
3
98%
of
30
65
SquishyStrawberry
Fundamentals
Classes
Basic Language Features
Object-oriented Programming
Loading...
Confirm