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)
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 (3933)
Algorithms (2880)
Data Types (2382)
Logic (2098)
Numbers (1234)
Strings (1150)
Puzzles (1137)
Arrays (995)
Games (960)
Mathematics (940)
Basic Language Features (827)
Programming Paradigms (776)
Data Structures (562)
Control Flow (543)
Declarative Programming (482)
Advanced Language Features (339)
Regular Expressions (261)
Object-oriented Programming (237)
Functions (209)
Lists (204)
Functional Programming (170)
Arithmetic (167)
Loops (162)
Objects (139)
Bugs (130)
Data (125)
Algebra (120)
Theoretical Computer Science (112)
Performance (109)
Security (108)
Sorting (105)
Parsing (100)
Computability Theory (98)
Recursion (98)
Binary (95)
Classes (93)
Integers (90)
Optimization (90)
Utilities (86)
Databases (83)
Information Systems (83)
Cryptography (82)
Geometry (81)
SQL (81)
Graphs (77)
Dates/Time (72)
Sequences (62)
Design Principles (58)
Design Patterns (57)
Formatting (51)
2880 Kata Found
7 kyu
Histogram data
2
2
0
100%
of
9
16
Jenik
Algorithms
Fundamentals
Arrays
Basic Language Features
5 kyu
Ziggurat Ride of Fortune
19
19
4
100%
of
12
34
docgunthrop
Algorithms
Arrays
Performance
7 kyu
Decrypt this school cipher
6
6
0
86%
of
25
42
isqua
Algorithms
Cryptography
Security
Fundamentals
Strings
Parsing
6 kyu
Bijective Binary
6
6
0
92%
of
6
14
Ian T
Algorithms
4 kyu
Human readable duration format
875
875
182
91%
of
2,051
14,900
davazp
2 Issues Reported
Algorithms
Formats
Strings
Dates/Time
Formatting
6 kyu
A String of Sorts
26
26
5
92%
of
89
566
Lordnibbler
1 Issue Reported
Algorithms
Strings
Sorting
4 kyu
Count ones in a segment
226
226
50
95%
of
180
695
d0n14
Algorithms
Binary
Numbers
Performance
4 kyu
Decode the Morse code, advanced
769
769
131
93%
of
926
4,540
jolaf
2 Issues Reported
Algorithms
Decoding
7 kyu
Flatten and sort an array
49
49
25
91%
of
664
4,038
lilsweetcaligula
2 Issues Reported
Fundamentals
Arrays
Sorting
Algorithms
Lambdas
Functional Programming
Functions
Declarative Programming
Control Flow
Basic Language Features
5 kyu
Exploding a Finite Algebraic Type
1
1
0
100%
of
4
5
phantamanta44
Algorithms
6 kyu
Split and then add both sides of an array together.
16
16
5
95%
of
118
360
bori0066
Algorithms
Arrays
5 kyu
Iterative Rotation Cipher
32
32
8
98%
of
27
66
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
1 kyu
Puzzle Fighter
24
24
5
100%
of
4
9
docgunthrop
Algorithms
Games
6 kyu
WeIrD StRiNg CaSe
317
317
65
86%
of
1,769
16,876
xDranik
3 Issues Reported
Algorithms
Utilities
Strings
4 kyu
Smallest possible sum
146
146
28
86%
of
225
1,046
dkhaburdzania
4 Issues Reported
Algorithms
Mathematics
Numbers
Arrays
6 kyu
1/n- Cycle
104
104
23
92%
of
113
483
g964
Fundamentals
Mathematics
Algorithms
Numbers
4 kyu
Total increasing or decreasing numbers up to a power of 10
291
291
21
91%
of
135
748
GiacomoSorbi
1 Issue Reported
Puzzles
Arithmetic
Mathematics
Algorithms
Numbers
8 kyu
Count the Monkeys!
133
133
48
89%
of
1,720
14,953
A.Partridge
2 Issues Reported
Algorithms
Arrays
Fundamentals
Ranges
Basic Language Features
Lists
Data Structures
6 kyu
Unique In Order
826
826
140
87%
of
4,964
40,552
antrianis
4 Issues Reported
Fundamentals
Advanced Language Features
Algorithms
5 kyu
Range of Integers in an Unsorted String
34
34
8
95%
of
30
83
docgunthrop
Puzzles
Algorithms
Numbers
5 kyu
Interlaced Spiral Cipher
26
26
5
92%
of
13
36
docgunthrop
Algorithms
Ciphers
Cryptography
Security
Strings
6 kyu
Grouped by commas
84
84
13
91%
of
408
4,422
agram
1 Issue Reported
Algorithms
String Formatting
Formatting
Strings
Numbers
4 kyu
The observed PIN
888
888
158
95%
of
1,215
8,155
BattleRattle
2 Issues Reported
Algorithms
7 kyu
Calculate snooker break total
1
1
0
91%
of
11
14
kmjones77
1 Issue Reported
Puzzles
Mathematics
Algorithms
Numbers
7 kyu
Sum of odd numbers
724
724
121
83%
of
4,105
29,128
hhelwich
2 Issues Reported
Fundamentals
Arrays
Lists
Data Structures
Numbers
Arithmetic
Mathematics
Algorithms
6 kyu
Stop gninnipS My sdroW!
648
648
129
89%
of
6,980
52,448
xDranik
1 Issue Reported
Algorithms
Strings
Formatting
5 kyu
Simple assembler interpreter
241
241
79
94%
of
388
1,655
ShinuToki
4 Issues Reported
Algorithms
Interpreters
7 kyu
The Poet And The Pendulum
45
45
18
86%
of
185
719
MrZizoScream
Fundamentals
Numbers
Basic Language Features
Arrays
Dynamic Arrays
Functional Programming
Declarative Programming
Vectors
Algorithms
Performance
1 kyu
Faberge easter eggs crush test [linear]
56
56
14
90%
of
51
210
ice1000
Algorithms
Performance
Mathematics
Numbers
7 kyu
The PaperFold sequence
4
4
3
88%
of
30
84
JohanWiltink
Algorithms
Sequences
Arrays
Numbers
Loading...
Confirm