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)
5442 Kata Found
4 kyu
Five Fundamental Monads
65
65
21
94%
of
111
360
mpickering
Fundamentals
Monads
Data Structures
Functional Programming
6 kyu
The difference between 11 and 21 in Ping-Pong
1
1
1
89%
of
9
10
HDdo
Fundamentals
7 kyu
Ironman Triathlon
14
14
1
83%
of
90
402
A.Partridge
1 Issue Reported
Fundamentals
Numbers
Arrays
Objects
7 kyu
Ski Jump
4
4
1
81%
of
75
268
A.Partridge
Fundamentals
Strings
Arrays
Mathematics
Algorithms
Numbers
7 kyu
Sort by Last Char
44
44
11
90%
of
339
1,671
A.Partridge
1 Issue Reported
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
7 kyu
Divide and Conquer
4
4
0
90%
of
109
449
A.Partridge
1 Issue Reported
Fundamentals
Strings
Numbers
Arrays
8 kyu
Sum Mixed Array
90
90
42
91%
of
1,484
10,969
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Counting Duplicates
1168
1168
225
89%
of
7,323
51,369
kgashok
3 Issues Reported
Fundamentals
Strings
7 kyu
Holiday II - Plane Seating
12
12
3
89%
of
79
308
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Count the Monkeys!
188
188
67
89%
of
2,348
20,620
A.Partridge
1 Issue Reported
Algorithms
Arrays
Fundamentals
Ranges
Basic Language Features
Lists
Data Structures
8 kyu
The 'if' function
115
115
29
70%
of
846
8,766
user578387
3 Issues Reported
Fundamentals
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
6 kyu
Pairs of Bears
12
12
4
92%
of
81
306
A.Partridge
Fundamentals
Strings
Numbers
Arrays
7 kyu
Double Sort
12
12
8
90%
of
258
1,089
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Alan Partridge II - Apple Turnover
16
16
15
82%
of
556
3,197
A.Partridge
Fundamentals
Numbers
Strings
Mathematics
Algorithms
8 kyu
Sum The Strings
30
30
15
90%
of
515
2,645
K-Calderon-ASC
Fundamentals
6 kyu
Lattice Point Interpolation
5
5
3
90%
of
5
8
abiessu
Algorithms
Numbers
Integers
Arrays
8 kyu
The Wide-Mouthed frog!
17
17
7
87%
of
592
3,501
nbeck
Fundamentals
Strings
5 kyu
Recipe DSL
5
5
0
89%
of
9
23
phaul
Fundamentals
Domain Specific Languages
Declarative Programming
6 kyu
Amidakuji
35
35
9
93%
of
75
273
docgunthrop
Fundamentals
Arrays
6 kyu
Vowels Back
31
31
4
84%
of
102
385
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
5 kyu
Decimal to Factorial and Back
185
185
36
91%
of
270
1,578
g964
Algorithms
Numbers
Utilities
6 kyu
The Deaf Rats of Hamelin
97
97
25
95%
of
355
1,476
dinglemouse
Fundamentals
6 kyu
Ease the StockBroker
132
132
24
75%
of
230
1,085
g964
Fundamentals
Strings
7 kyu
Sum of odd numbers
954
954
166
84%
of
5,273
37,778
hhelwich
Fundamentals
Arrays
Lists
Data Structures
Numbers
Arithmetic
Mathematics
Algorithms
6 kyu
Help the bookseller !
431
431
85
84%
of
1,226
7,973
g964
Fundamentals
Algorithms
6 kyu
Sort Arrays (Ignoring Case)
29
29
3
83%
of
241
3,915
ineiti
1 Issue Reported
Fundamentals
Arrays
Sorting
Algorithms
7 kyu
Thinking & Testing : Uniq or not Uniq
31
31
8
91%
of
242
943
myjinxin2015
2 Issues Reported
Puzzles
Games
6 kyu
Taylor Series
6
6
3
86%
of
11
24
Paul Robertson
Fundamentals
Mathematics
Algorithms
Numbers
Lists
Data Structures
6 kyu
Moduli number system
58
58
8
85%
of
158
981
g964
Fundamentals
Numbers
5 kyu
Common Denominators
660
660
99
86%
of
967
6,503
g964
Fundamentals
Algorithms
Mathematics
Numbers
Loading...
Confirm