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)
4765 Kata Found
8 kyu
Beginner - Lost Without a Map
177
177
72
89%
of
2,591
21,039
A.Partridge
1 Issue Reported
Fundamentals
Arrays
Numbers
6 kyu
Pairs of Bears
17
17
4
92%
of
94
372
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Remove String Spaces
284
284
116
88%
of
5,364
43,082
A.Partridge
Fundamentals
Strings
Arrays
8 kyu
Well of Ideas - Easy Version
81
81
29
91%
of
903
6,064
A.Partridge
Refactoring
Fundamentals
Arrays
Strings
7 kyu
Ski Jump
6
6
1
81%
of
82
323
A.Partridge
Fundamentals
Strings
Arrays
Mathematics
Algorithms
Numbers
7 kyu
Divide and Conquer
5
5
1
90%
of
126
584
A.Partridge
1 Issue Reported
Fundamentals
Strings
Numbers
Arrays
8 kyu
Alan Partridge II - Apple Turnover
17
17
15
82%
of
560
3,253
A.Partridge
Fundamentals
Numbers
Strings
Mathematics
Algorithms
4 kyu
Five Fundamental Monads
65
65
21
94%
of
111
365
mpickering
Fundamentals
Monads
Data Structures
Functional Programming
6 kyu
The difference between 11 and 21 in Ping-Pong
1
1
1
89%
of
9
12
HDdo
Fundamentals
7 kyu
Ironman Triathlon
14
14
2
83%
of
95
464
A.Partridge
1 Issue Reported
Fundamentals
Numbers
Arrays
Objects
7 kyu
Sort by Last Char
44
44
11
90%
of
345
1,725
A.Partridge
1 Issue Reported
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
Sum Mixed Array
92
92
43
91%
of
1,498
11,105
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Counting Duplicates
1174
1174
226
89%
of
7,337
51,527
kgashok
3 Issues Reported
Fundamentals
Strings
7 kyu
Holiday II - Plane Seating
12
12
3
90%
of
82
330
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Count the Monkeys!
190
190
68
89%
of
2,357
20,778
A.Partridge
1 Issue Reported
Algorithms
Arrays
Fundamentals
Ranges
Basic Language Features
Lists
Data Structures
8 kyu
The 'if' function
117
117
29
70%
of
851
8,812
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
7 kyu
Borrower Speak
9
9
2
89%
of
165
749
A.Partridge
Fundamentals
Strings
7 kyu
Double Sort
12
12
8
90%
of
267
1,126
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Sum The Strings
33
33
15
90%
of
522
2,714
K-Calderon-ASC
Fundamentals
6 kyu
Lattice Point Interpolation
5
5
3
90%
of
5
10
abiessu
Algorithms
Numbers
Integers
Arrays
8 kyu
The Wide-Mouthed frog!
19
19
7
87%
of
600
3,553
nbeck
Fundamentals
Strings
5 kyu
Recipe DSL
5
5
0
89%
of
9
23
phaul
Fundamentals
Domain Specific Languages
Declarative Programming
6 kyu
Amidakuji
37
37
9
93%
of
77
281
docgunthrop
Fundamentals
Arrays
6 kyu
Vowels Back
32
32
4
84%
of
103
397
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
5 kyu
Decimal to Factorial and Back
185
185
37
91%
of
272
1,595
g964
Algorithms
Numbers
Utilities
6 kyu
The Deaf Rats of Hamelin
97
97
25
95%
of
359
1,502
dinglemouse
Fundamentals
6 kyu
Ease the StockBroker
133
133
24
75%
of
231
1,089
g964
Fundamentals
Strings
7 kyu
Sum of odd numbers
954
954
166
84%
of
5,281
37,848
hhelwich
Fundamentals
Arrays
Lists
Data Structures
Numbers
Arithmetic
Mathematics
Algorithms
6 kyu
Help the bookseller !
431
431
85
84%
of
1,229
7,989
g964
Fundamentals
Algorithms
6 kyu
Sort Arrays (Ignoring Case)
29
29
3
83%
of
243
3,925
ineiti
1 Issue Reported
Fundamentals
Arrays
Sorting
Algorithms
Loading...
Confirm