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)
2018 Kata Found
6 kyu
Vasya - Clerk
1774
1774
256
86%
of
4,196
28,035
AlexIsHappy
3 Issues Reported
Fundamentals
Mathematics
Algorithms
Numbers
Games
7 kyu
Sort by Last Char
49
49
11
90%
of
362
1,883
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
Count the Monkeys!
196
196
69
89%
of
2,406
21,314
A.Partridge
1 Issue Reported
Algorithms
Arrays
Fundamentals
Ranges
Basic Language Features
Lists
Data Structures
8 kyu
The 'if' function
119
119
30
70%
of
875
9,009
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
110
430
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
7 kyu
Thinking & Testing : Uniq or not Uniq
32
32
8
91%
of
250
985
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
348
1,728
myjinxin2015
Puzzles
Games
5 kyu
Blackjack Scorer
60
60
11
90%
of
168
1,200
jodymgustafson
Algorithms
Rules
Games
8 kyu
Do I get a bonus?
132
132
57
88%
of
2,769
20,342
A.Partridge
Algorithms
Booleans
Strings
Numbers
7 kyu
The wheat/rice and chessboard problem
49
49
10
91%
of
264
1,208
GiacomoSorbi
Puzzles
Mathematics
Algorithms
Numbers
Bitwise Operators
Bits
Operators
Advanced Language Features
Binary
Fundamentals
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
The Supermarket Queue
1624
1624
347
93%
of
2,562
14,200
mattlub
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Tetris Series #2 — Primitive Gameplay
10
10
1
95%
of
19
49
Etoneja
Fundamentals
Games
Algorithms
Basic Language Features
Loops
Control Flow
Arrays
5 kyu
Dots and Boxes Validator
42
42
14
100%
of
32
121
docgunthrop
Algorithms
Games
6 kyu
Build a pile of Cubes
1210
1210
146
85%
of
4,718
32,883
g964
1 Issue Reported
Fundamentals
Optimization
6 kyu
Create Phone Number
616
616
186
82%
of
6,199
55,961
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
69
GiacomoSorbi
Algorithms
Memoization
Design Patterns
Design Principles
Optimization
8 kyu
Yield to the Block
28
28
3
89%
of
94
2,460
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
914
914
163
88%
of
1,544
9,913
g964
Fundamentals
Algorithms
Optimization
6 kyu
Playing on a chessboard
296
296
40
85%
of
453
2,351
g964
Fundamentals
Puzzles
Games
6 kyu
Socialist distribution
33
33
5
93%
of
69
235
GiacomoSorbi
Algorithms
Arrays
Lists
Data Structures
Statistics
Data
7 kyu
Descending Order
823
823
145
88%
of
8,502
62,825
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
7 kyu
Testing 1-2-3
54
54
11
95%
of
1,182
4,904
acr
Fundamentals
Arrays
Iterators
Control Flow
Object-oriented Programming
Basic Language Features
4 kyu
How many numbers III?
343
343
59
94%
of
242
1,143
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
350
1,980
Jomo Pipi
Algorithms
Games
Puzzles
Performance
7 kyu
Sum of Cubes
26
26
8
90%
of
450
2,913
MementoMori
Fundamentals
Control Flow
Basic Language Features
8 kyu
Area of a Square
52
52
20
89%
of
552
3,034
romerojp
Puzzles
Games
8 kyu
Multiple of index
50
50
31
91%
of
749
4,351
Dmitry Kudla
1 Issue Reported
Fundamentals
Arrays
Numbers
Basic Language Features
Loading...
Confirm