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)
1969 Kata Found
8 kyu
Beginner - Lost Without a Map
199
199
76
90%
of
2,819
23,030
A.Partridge
1 Issue Reported
Fundamentals
Arrays
Numbers
6 kyu
Pairs of Bears
24
24
5
92%
of
134
597
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Remove String Spaces
291
291
117
89%
of
5,463
44,058
A.Partridge
Fundamentals
Strings
Arrays
8 kyu
Well of Ideas - Easy Version
90
90
29
91%
of
968
6,634
A.Partridge
Refactoring
Fundamentals
Arrays
Strings
7 kyu
Ski Jump
12
12
3
83%
of
110
510
A.Partridge
1 Issue Reported
Fundamentals
Strings
Arrays
Mathematics
Algorithms
Numbers
7 kyu
Divide and Conquer
10
10
1
91%
of
168
840
A.Partridge
1 Issue Reported
Fundamentals
Strings
Numbers
Arrays
7 kyu
Ironman Triathlon
15
15
2
83%
of
103
538
A.Partridge
1 Issue Reported
Fundamentals
Numbers
Arrays
Objects
7 kyu
Sort by Last Char
48
48
11
89%
of
359
1,850
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
Sum Mixed Array
95
95
43
91%
of
1,536
11,457
A.Partridge
Fundamentals
Strings
Numbers
Arrays
7 kyu
Holiday II - Plane Seating
14
14
3
90%
of
93
378
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Count the Monkeys!
192
192
69
89%
of
2,393
21,155
A.Partridge
1 Issue Reported
Algorithms
Arrays
Fundamentals
Ranges
Basic Language Features
Lists
Data Structures
8 kyu
The 'if' function
118
118
30
70%
of
871
8,952
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
7 kyu
Double Sort
13
13
9
90%
of
276
1,226
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Lattice Point Interpolation
5
5
3
90%
of
5
11
abiessu
Algorithms
Numbers
Integers
Arrays
6 kyu
Amidakuji
40
40
9
93%
of
80
293
docgunthrop
Fundamentals
Arrays
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
Sum of odd numbers
961
961
167
84%
of
5,304
38,093
hhelwich
Fundamentals
Arrays
Lists
Data Structures
Numbers
Arithmetic
Mathematics
Algorithms
6 kyu
Sort Arrays (Ignoring Case)
30
30
3
83%
of
251
3,960
ineiti
1 Issue Reported
Fundamentals
Arrays
Sorting
Algorithms
3 kyu
Alphametics Solver
120
120
28
94%
of
25
97
docgunthrop
Algorithms
Puzzles
Games
Performance
Optimization
Cryptography
Security
6 kyu
Who has the most money?
58
58
14
90%
of
201
1,627
MrAppa
Algorithms
Object-oriented Programming
7 kyu
The wheat/rice and chessboard problem
49
49
10
92%
of
262
1,198
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
92%
of
91
274
KenKamau
Algorithms
Strings
Arrays
5 kyu
Josephus Survivor
381
381
81
90%
of
615
4,431
GiacomoSorbi
Algorithms
Mathematics
Numbers
Lists
Data Structures
Arrays
8 kyu
Sum of differences in array
60
60
22
87%
of
512
3,149
kamilalew
Fundamentals
Arrays
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
5 kyu
Ziggurat Ride of Fortune
35
35
8
98%
of
27
74
docgunthrop
Algorithms
Arrays
Performance
6 kyu
PI approximation
148
148
28
81%
of
504
2,823
g964
Fundamentals
Arrays
Mathematics
Algorithms
Numbers
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
Iterative Rotation Cipher
78
78
32
96%
of
62
206
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
Loading...
Confirm