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 (5224)
Algorithms (4124)
Data Types (3070)
Logic (2943)
Numbers (1701)
Puzzles (1492)
Strings (1450)
Mathematics (1332)
Arrays (1276)
Games (1202)
Basic Language Features (1047)
Programming Paradigms (999)
Data Structures (733)
Control Flow (718)
Declarative Programming (596)
Advanced Language Features (438)
Regular Expressions (323)
Object-oriented Programming (315)
Functions (276)
Lists (257)
Arithmetic (226)
Loops (209)
Functional Programming (204)
Algebra (184)
Objects (182)
Theoretical Computer Science (160)
Bugs (158)
Performance (158)
Security (151)
Data (146)
Computability Theory (144)
Recursion (144)
Parsing (134)
Binary (126)
Dates/Time (123)
Sorting (123)
Integers (121)
Optimization (121)
Classes (118)
Geometry (116)
Cryptography (115)
Graphs (113)
Utilities (102)
Databases (87)
Information Systems (87)
Design Principles (86)
SQL (85)
Design Patterns (81)
Sequences (78)
Refactoring (70)
1523 Kata Found
6 kyu
Pairs of Bears
23
23
5
92%
of
105
452
A.Partridge
Fundamentals
Strings
Numbers
Arrays
8 kyu
Remove String Spaces
286
286
116
88%
of
5,391
43,356
A.Partridge
Fundamentals
Strings
Arrays
8 kyu
Well of Ideas - Easy Version
84
84
29
91%
of
919
6,209
A.Partridge
Refactoring
Fundamentals
Arrays
Strings
7 kyu
Ski Jump
7
7
1
82%
of
88
385
A.Partridge
1 Issue Reported
Fundamentals
Strings
Arrays
Mathematics
Algorithms
Numbers
7 kyu
Divide and Conquer
6
6
1
91%
of
138
650
A.Partridge
1 Issue Reported
Fundamentals
Strings
Numbers
Arrays
8 kyu
Alan Partridge II - Apple Turnover
17
17
15
82%
of
562
3,295
A.Partridge
Fundamentals
Numbers
Strings
Mathematics
Algorithms
7 kyu
Sort by Last Char
46
46
11
90%
of
349
1,761
A.Partridge
Fundamentals
Strings
Arrays
Functions
Control Flow
Basic Language Features
8 kyu
Sum Mixed Array
92
92
43
91%
of
1,508
11,206
A.Partridge
Fundamentals
Strings
Numbers
Arrays
6 kyu
Counting Duplicates
1179
1179
226
89%
of
7,348
51,638
kgashok
3 Issues Reported
Fundamentals
Strings
7 kyu
Holiday II - Plane Seating
12
12
3
89%
of
84
343
A.Partridge
Fundamentals
Strings
Numbers
Arrays
Beta
Word Break
2
2
0
25%
of
6
8
Balaiseee
Status:
Testing & feedback needed
Estimated Rank:
4 kyu
Fundamentals
Strings
7 kyu
Borrower Speak
9
9
2
90%
of
199
884
A.Partridge
Fundamentals
Strings
Beta
Copy Within - Beginner
7
7
0
77%
of
48
70
A.Partridge
1 Issue Reported
Status:
Testing & feedback needed
Estimated Rank:
8 kyu
Fundamentals
Booleans
Strings
Numbers
Arrays
7 kyu
Double Sort
11
11
9
90%
of
270
1,168
A.Partridge
Fundamentals
Strings
Numbers
Arrays
Beta
Find next greater number with disjoint set of digits
0
0
0
25%
of
6
8
srazafimamy
1 Issue Reported
Status:
Testing & feedback needed
Estimated Rank:
7 kyu
Bugs
Algorithms
Arithmetic
Mathematics
Numbers
Strings
8 kyu
The Wide-Mouthed frog!
19
19
7
86%
of
607
3,596
nbeck
Fundamentals
Strings
6 kyu
Vowels Back
32
32
5
84%
of
105
408
A.Partridge
1 Issue Reported
Algorithms
Fundamentals
Strings
Arrays
Loops
Control Flow
Basic Language Features
6 kyu
Ease the StockBroker
133
133
24
75%
of
231
1,092
g964
Fundamentals
Strings
6 kyu
Errors : histogram
37
37
19
90%
of
214
1,047
g964
Fundamentals
Strings
6 kyu
Positions Average
93
93
21
87%
of
224
1,053
g964
Fundamentals
Strings
8 kyu
Do I get a bonus?
131
131
56
88%
of
2,743
20,119
A.Partridge
Algorithms
Booleans
Strings
Numbers
6 kyu
Vowel-consonant lexicon
19
19
5
92%
of
90
271
KenKamau
Algorithms
Strings
Arrays
8 kyu
Regexp Basics - is it a digit?
105
105
41
85%
of
762
5,424
taw
5 Issues Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
5 kyu
Iterative Rotation Cipher
77
77
32
96%
of
62
205
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
7 kyu
Remove anchor from URL
94
94
29
85%
of
972
9,957
jhoffner
1 Issue Reported
Fundamentals
Regular Expressions
Declarative Programming
Advanced Language Features
Strings
6 kyu
Playing with passphrases
387
387
64
89%
of
1,029
5,968
g964
Algorithms
Chars
Strings
Encoding
6 kyu
Create Phone Number
610
610
185
82%
of
6,116
55,444
xDranik
Algorithms
Arrays
Strings
Loops
Control Flow
Basic Language Features
Fundamentals
Formatting
Regular Expressions
Declarative Programming
Advanced Language Features
6 kyu
Statistics for an Athletic Association
369
369
62
89%
of
631
3,252
g964
Fundamentals
Strings
5 kyu
Interlaced Spiral Cipher
36
36
9
96%
of
26
73
docgunthrop
Algorithms
Ciphers
Cryptography
Security
Strings
8 kyu
Sort and Star
116
116
42
91%
of
1,342
8,440
A.Partridge
2 Issues Reported
Fundamentals
Strings
Arrays
Loading...
Confirm