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
C++
Crystal
C#
Dart
Elixir
Elm (Beta)
Erlang (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
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 (3857)
Algorithms (2803)
Data Types (2339)
Logic (2047)
Numbers (1203)
Strings (1132)
Puzzles (1117)
Arrays (973)
Games (949)
Mathematics (913)
Basic Language Features (818)
Programming Paradigms (759)
Data Structures (550)
Control Flow (533)
Declarative Programming (474)
Advanced Language Features (329)
Regular Expressions (256)
Object-oriented Programming (234)
Functions (205)
Lists (200)
Functional Programming (166)
Arithmetic (165)
Loops (160)
Objects (138)
Bugs (127)
Data (124)
Algebra (117)
Theoretical Computer Science (111)
Security (107)
Sorting (105)
Parsing (99)
Performance (99)
Computability Theory (97)
Recursion (97)
Binary (93)
Classes (93)
Optimization (89)
Integers (88)
Utilities (85)
Databases (83)
Information Systems (83)
Cryptography (81)
SQL (81)
Geometry (78)
Graphs (76)
Dates/Time (72)
Sequences (58)
Design Principles (57)
Design Patterns (56)
Formatting (51)
205 Kata Found
8 kyu
Function 1 - hello world
128
128
21
70%
of
1,515
18,967
ineiti
1 Issue Reported
Fundamentals
Functions
Control Flow
Basic Language Features
8 kyu
Filter out the geese
52
52
25
91%
of
682
3,894
stevehopkinson
Fundamentals
Higher-order Functions
Functions
Control Flow
Basic Language Features
Arrays
6 kyu
Fun with lists: map
34
34
23
93%
of
124
622
janitormeir
Fundamentals
Lists
Data Structures
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
8 kyu
Are You Playing Banjo?
126
126
27
86%
of
1,391
16,891
MRodalgaard
6 Issues Reported
Fundamentals
Strings
Functions
Control Flow
Basic Language Features
7 kyu
80's Kids #2: Help ALF Find His Spaceship
29
29
5
88%
of
127
714
NateBrady23
2 Issues Reported
Algorithms
Lambdas
Functional Programming
Functions
Declarative Programming
Control Flow
Basic Language Features
Fundamentals
Maps
Data Structures
Arrays
7 kyu
Ruby Functions #1: Define the "Each" Function
0
0
1
95%
of
21
43
davidhu2000
Fundamentals
Iterators
Control Flow
Object-oriented Programming
Basic Language Features
Functions
7 kyu
Flatten and sort an array
34
34
20
91%
of
508
2,743
lilsweetcaligula
Fundamentals
Arrays
Sorting
Algorithms
Lambdas
Functional Programming
Functions
Declarative Programming
Control Flow
Basic Language Features
7 kyu
The Office I - Outed
15
15
10
87%
of
172
826
A.Partridge
3 Issues Reported
Fundamentals
Arrays
Functions
Control Flow
Basic Language Features
Objects
Numbers
5 kyu
Count The Hits Adding Contiguous Powers!
6
6
3
94%
of
9
14
raulbc777
Fundamentals
Control Flow
Basic Language Features
Mathematics
Algorithms
Numbers
Functions
Permutations
Sorting
Declarative Programming
Strings
7 kyu
Binary Pyramid 101
5
5
1
89%
of
76
249
debri
1 Issue Reported
Fundamentals
Functions
Control Flow
Basic Language Features
Mathematics
Algorithms
Numbers
5 kyu
What’s the degree?
17
17
4
89%
of
23
53
hhelwich
1 Issue Reported
Algorithms
Functions
Control Flow
Basic Language Features
Fundamentals
Arithmetic
Mathematics
Numbers
7 kyu
Find the anonymous function
21
21
5
90%
of
83
775
matt c
Fundamentals
Functions
Control Flow
Basic Language Features
6 kyu
Duplicate Arguments
10
10
8
88%
of
177
1,449
lunitik
Algorithms
Arguments
Basic Language Features
Fundamentals
Functions
Control Flow
6 kyu
Approximate Fractions
5
5
0
82%
of
11
23
raulbc777
2 Issues Reported
Fundamentals
Control Flow
Basic Language Features
Mathematics
Algorithms
Numbers
Functions
Strings
6 kyu
Find a Very Special Set Of Numbers In a Certain Range
5
5
1
94%
of
25
72
raulbc777
Algorithms
Fundamentals
Control Flow
Basic Language Features
Mathematics
Numbers
Functions
6 kyu
Multiples by permutations
6
6
4
96%
of
53
205
raulbc777
Fundamentals
Algorithms
Data Structures
Functions
Control Flow
Basic Language Features
Permutations
Mathematics
Numbers
6 kyu
Unknown amount of duplicates. One missing number.
16
16
3
94%
of
67
205
raulbc777
Fundamentals
Declarative Programming
Functions
Control Flow
Basic Language Features
Numbers
Sequences
Arrays
Mathematics
Algorithms
Sorting
Performance
6 kyu
Parentheses are loud !
10
10
4
97%
of
17
49
reivhax
Puzzles
Tips & Tricks
Functions
Control Flow
Basic Language Features
Fundamentals
7 kyu
Reverser
20
20
3
84%
of
192
824
msingh
1 Issue Reported
Fundamentals
Recursion
Algorithms
Computability Theory
Theoretical Computer Science
Functions
Control Flow
Basic Language Features
7 kyu
Sort by Last Char
16
16
6
91%
of
203
791
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
7 kyu
First thing first.
8
8
3
82%
of
28
122
reivhax
Bugs
Functions
Control Flow
Basic Language Features
Fundamentals
8 kyu
Convert a Boolean to a String
76
76
20
81%
of
1,467
12,006
btaitelb
4 Issues Reported
Fundamentals
Booleans
Strings
Functions
Control Flow
Basic Language Features
6 kyu
Missing Alphabet
28
28
8
90%
of
158
636
MicheleCarbone
1 Issue Reported
Algorithms
Strings
Functions
Control Flow
Basic Language Features
Fundamentals
Games
Puzzles
5 kyu
Snakes and Ladders
184
184
49
96%
of
256
942
adrian.eyre
Fundamentals
Classes
Basic Language Features
Object-oriented Programming
Functions
Control Flow
7 kyu
Find ingredients for making glass
1
1
1
76%
of
19
48
marh
Fundamentals
Functions
Control Flow
Basic Language Features
Strings
7 kyu
anti-virus file scanner
7
7
5
96%
of
14
64
wayne1512
Algorithms
Strings
Functions
Control Flow
Basic Language Features
Fundamentals
Security
Regular Expressions
Declarative Programming
Advanced Language Features
5 kyu
Partition On
61
61
13
79%
of
227
2,810
jcorbin@wunjo.org
1 Issue Reported
Algorithms
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
Fundamentals
Arrays
5 kyu
Lazy Repeater
29
29
9
94%
of
140
1,096
nklein
1 Issue Reported
Algorithms
Functions
Control Flow
Basic Language Features
Fundamentals
Iterators
Object-oriented Programming
5 kyu
Calculating with Functions
1149
1149
236
92%
of
1,728
14,338
BattleRattle
Fundamentals
Functions
Control Flow
Basic Language Features
Functional Programming
Declarative Programming
Higher-order Functions
6 kyu
Basic Bitmapping
14
14
4
84%
of
53
176
spcbrn
Algorithms
Bits
Binary
Bitmaps
Maps
Data Structures
Dynamic Arrays
Arrays
Functional Programming
Declarative Programming
Vectors
Integers
Numbers
Sets
Lists
Recursion
Computability Theory
Theoretical Computer Science
Functions
Control Flow
Basic Language Features
Fundamentals
Loading...
Confirm