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)
1796 Kata Found
8 kyu
The 'if' function
111
111
29
70%
of
803
8,447
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
7 kyu
Holiday II - Plane Seating
3
3
2
89%
of
45
121
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Pairs of Bears
5
5
3
89%
of
47
129
A.Partridge
2 Issues Reported
Fundamentals
Strings
Numbers
Arrays
8 kyu
Alan Partridge II - Apple Turnover
16
16
15
82%
of
528
3,004
A.Partridge
Fundamentals
Numbers
Strings
Mathematics
Algorithms
8 kyu
The Wide-Mouthed frog!
17
17
7
86%
of
566
3,303
nbeck
Fundamentals
Strings
6 kyu
Vowels Back
27
27
4
83%
of
93
341
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
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
1,037
g964
Fundamentals
Strings
8 kyu
Do I get a bonus?
129
129
55
88%
of
2,706
19,853
A.Partridge
Algorithms
Booleans
Strings
Numbers
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
746
5,324
taw
5 Issues Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
4 kyu
Square into Squares. Protect trees!
1118
1118
173
92%
of
742
4,251
g964
Fundamentals
Mathematics
Algorithms
Numbers
Sequences
Arrays
6 kyu
The Supermarket Queue
1609
1609
346
93%
of
2,538
14,038
mattlub
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
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
7 kyu
Remove anchor from URL
94
94
29
85%
of
965
9,882
jhoffner
1 Issue Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
6 kyu
Playing with passphrases
386
386
63
89%
of
1,025
5,949
g964
Algorithms
Chars
Strings
Encoding
6 kyu
Create Phone Number
604
604
183
82%
of
6,023
54,849
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
2,449
agram
1 Issue Reported
Fundamentals
Blocks
Object-oriented Programming
Functions
Control Flow
Basic Language Features
Functional Programming
Declarative Programming
Higher-order Functions
6 kyu
Statistics for an Athletic Association
367
367
61
89%
of
626
3,240
g964
Fundamentals
Strings
6 kyu
Tribonacci Sequence
1142
1142
226
88%
of
7,291
48,542
GiacomoSorbi
3 Issues Reported
Fundamentals
Sequences
Arrays
Arithmetic
Mathematics
Algorithms
Numbers
Lists
Data Structures
7 kyu
Descending Order
818
818
146
88%
of
8,399
62,099
TastyOs
1 Issue Reported
Fundamentals
Functions
Control Flow
Basic Language Features
5 kyu
Interlaced Spiral Cipher
35
35
9
96%
of
26
73
docgunthrop
Algorithms
Ciphers
Cryptography
Security
Strings
8 kyu
Sort and Star
115
115
42
91%
of
1,330
8,348
A.Partridge
2 Issues Reported
Fundamentals
Strings
Arrays
5 kyu
Tongues
51
51
9
94%
of
147
1,168
Frzy
Algorithms
Strings
Encryption
Cryptography
Security
Decryption
Ciphers
5 kyu
Phone Directory
350
350
68
76%
of
482
2,697
g964
Fundamentals
Strings
8 kyu
Reversed Strings
201
201
75
86%
of
3,689
38,224
jhoffner
Fundamentals
Strings
6 kyu
Split Strings
288
288
107
86%
of
2,345
20,496
jhoffner
5 Issues Reported
Algorithms
Regular Expressions
Declarative Programming
Advanced Language Features
Fundamentals
Strings
6 kyu
ByState
39
39
11
72%
of
129
495
g964
Fundamentals
Strings
Loading...
Confirm