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)
1080 Kata Found
7 kyu
Sort by Last Char
48
48
11
90%
of
362
1,888
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
The 'if' function
119
119
30
70%
of
879
9,029
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
6 kyu
Vowels Back
32
32
6
84%
of
110
431
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
7 kyu
Sum of odd numbers
967
967
169
84%
of
5,321
38,250
hhelwich
Fundamentals
Arrays
Lists
Data Structures
Numbers
Arithmetic
Mathematics
Algorithms
4 kyu
Sum of Intervals
495
495
105
91%
of
1,021
7,347
xDranik
2 Issues Reported
Algorithms
Aggregations
Arithmetic
Mathematics
Numbers
Integers
3 kyu
Alphametics Solver
120
120
28
94%
of
25
97
docgunthrop
Algorithms
Puzzles
Games
Performance
Optimization
Cryptography
Security
7 kyu
The wheat/rice and chessboard problem
49
49
10
92%
of
265
1,210
GiacomoSorbi
Puzzles
Mathematics
Algorithms
Numbers
Bitwise Operators
Bits
Operators
Advanced Language Features
Binary
Fundamentals
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
The Supermarket Queue
1625
1625
347
93%
of
2,565
14,208
mattlub
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Tetris Series #2 — Primitive Gameplay
10
10
1
95%
of
20
50
Etoneja
Fundamentals
Games
Algorithms
Basic Language Features
Loops
Control Flow
Arrays
5 kyu
Iterative Rotation Cipher
78
78
32
95%
of
63
208
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
6 kyu
Create Phone Number
617
617
186
82%
of
6,210
56,033
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
2,460
agram
1 Issue Reported
Fundamentals
Blocks
Object-oriented Programming
Functions
Control Flow
Basic Language Features
Functional Programming
Declarative Programming
Higher-order Functions
6 kyu
Tribonacci Sequence
1154
1154
228
88%
of
7,343
49,001
GiacomoSorbi
3 Issues Reported
Fundamentals
Sequences
Arrays
Arithmetic
Mathematics
Algorithms
Numbers
Lists
Data Structures
7 kyu
Descending Order
823
823
145
88%
of
8,508
62,865
TastyOs
1 Issue Reported
Fundamentals
Functions
Control Flow
Basic Language Features
5 kyu
Interlaced Spiral Cipher
37
37
9
96%
of
26
73
docgunthrop
Algorithms
Ciphers
Cryptography
Security
Strings
5 kyu
Tongues
52
52
10
94%
of
152
1,187
Frzy
Algorithms
Strings
Encryption
Cryptography
Security
Decryption
Ciphers
6 kyu
Save the Spice Harvester (Dune Universe)
27
27
12
92%
of
130
403
docgunthrop
Fundamentals
Arithmetic
Mathematics
Algorithms
Numbers
7 kyu
Testing 1-2-3
54
54
11
95%
of
1,182
4,911
acr
Fundamentals
Arrays
Iterators
Control Flow
Object-oriented Programming
Basic Language Features
4 kyu
Sum Strings as Numbers
745
745
96
82%
of
1,764
12,937
nicknovitski
5 Issues Reported
Algorithms
Strings
Arithmetic
Mathematics
Numbers
Big Integers
Integers
Utilities
4 kyu
How many numbers III?
344
344
59
94%
of
242
1,145
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Control Flow
Basic Language Features
Mathematics
Numbers
Declarative Programming
7 kyu
Sum of Cubes
26
26
8
90%
of
450
2,913
MementoMori
Fundamentals
Control Flow
Basic Language Features
6 kyu
Longest palindrome
28
28
9
90%
of
93
319
georgesykes86
Algorithms
Loops
Control Flow
Basic Language Features
Fundamentals
Arrays
Strings
8 kyu
101 Dalmatians - squash the bugs, not the dogs!
78
78
20
78%
of
1,111
7,527
A.Partridge
1 Issue Reported
Bugs
5 kyu
Church Booleans
6
6
6
90%
of
35
93
PaulBlanche
Fundamentals
Lambdas
Functional Programming
Functions
Declarative Programming
Control Flow
Basic Language Features
7 kyu
Looking for a benefactor
76
76
19
78%
of
639
3,920
g964
Fundamentals
Arithmetic
Mathematics
Algorithms
Numbers
8 kyu
Grasshopper - Personalized Message
65
65
29
84%
of
1,579
11,367
danleavitt0
1 Issue Reported
Fundamentals
Conditional Statements
Control Flow
Basic Language Features
5 kyu
Base -2
48
48
12
93%
of
107
438
LawfulHacker
Algorithms
Binary
6 kyu
Fibonacci on roids
18
18
10
84%
of
54
179
GiacomoSorbi
Algorithms
Recursion
Computability Theory
Theoretical Computer Science
Optimization
Iterators
Control Flow
Object-oriented Programming
Basic Language Features
Fundamentals
Map/Reduce
Lists
Data Structures
Arrays
8 kyu
A wolf in sheep's clothing
54
54
15
88%
of
556
3,996
jkempster34
Fundamentals
Arrays
Loops
Control Flow
Basic Language Features
5 kyu
First Variation on Caesar Cipher
491
491
72
82%
of
447
2,490
g964
Fundamentals
Ciphers
Algorithms
Cryptography
Security
Strings
Utilities
Loading...
Confirm