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
CFML (Beta)
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)
Lean (Beta)
Lua (Beta)
NASM (Beta)
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
PHP
PowerShell (Beta)
Prolog (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 (4061)
Algorithms (3015)
Data Types (2454)
Logic (2193)
Numbers (1301)
Strings (1178)
Puzzles (1175)
Arrays (1024)
Mathematics (995)
Games (986)
Basic Language Features (849)
Programming Paradigms (801)
Data Structures (574)
Control Flow (556)
Declarative Programming (492)
Advanced Language Features (352)
Regular Expressions (265)
Object-oriented Programming (245)
Functions (211)
Lists (209)
Functional Programming (174)
Arithmetic (172)
Loops (168)
Objects (145)
Bugs (132)
Algebra (130)
Data (126)
Theoretical Computer Science (118)
Performance (117)
Security (112)
Sorting (108)
Parsing (105)
Computability Theory (104)
Recursion (104)
Classes (97)
Binary (95)
Optimization (95)
Integers (94)
Cryptography (86)
Geometry (86)
Utilities (86)
Databases (83)
Information Systems (83)
SQL (81)
Graphs (80)
Dates/Time (73)
Sequences (64)
Design Principles (60)
Design Patterns (58)
Formatting (52)
64 Kata Found
4 kyu
Square into Squares. Protect trees!
1333
1333
217
93%
of
880
5,068
g964
1 Issue Reported
Fundamentals
Mathematics
Algorithms
Numbers
Sequences
Arrays
4 kyu
Longest Common Subsequence (Performance version)
150
150
38
94%
of
155
758
JohanWiltink
1 Issue Reported
Algorithms
Performance
Strings
Sequences
Arrays
7 kyu
Complete The Pattern #1
106
106
20
89%
of
645
6,393
curious_db97
2 Issues Reported
Puzzles
Loops
Control Flow
Basic Language Features
Fundamentals
Sequences
Arrays
Strings
6 kyu
A disguised sequence (I)
103
103
16
84%
of
440
2,470
g964
Algorithms
Sequences
Arrays
7 kyu
Sum of numbers from 0 to N
205
205
31
73%
of
1,700
10,154
Javatlacati
3 Issues Reported
Fundamentals
Loops
Control Flow
Basic Language Features
Sequences
Arrays
6 kyu
Look and say numbers
80
80
13
88%
of
289
1,621
Svenito
1 Issue Reported
Algorithms
Recursion
Computability Theory
Theoretical Computer Science
Sequences
Arrays
6 kyu
Sequence classifier
29
29
4
92%
of
127
518
GiacomoSorbi
Algorithms
Sequences
Arrays
6 kyu
Tribonacci Sequence
1298
1298
264
88%
of
8,069
55,308
GiacomoSorbi
6 Issues Reported
Fundamentals
Sequences
Arrays
Arithmetic
Mathematics
Algorithms
Numbers
Lists
Data Structures
6 kyu
Find last Fibonacci digit [hardcore version]
28
28
7
93%
of
137
456
GiacomoSorbi
Algorithms
Sequences
Arrays
Parsing
Strings
7 kyu
The PaperFold sequence
34
34
20
87%
of
65
276
JohanWiltink
Algorithms
Sequences
Arrays
Numbers
7 kyu
The Baum-Sweet sequence
19
19
6
88%
of
67
239
JohanWiltink
Algorithms
Sequences
Arrays
Numbers
6 kyu
Look and say sequence generator
36
36
8
95%
of
121
372
GiacomoSorbi
Fundamentals
Sequences
Arrays
Constructors
Basic Language Features
Strings
Regular Expressions
Declarative Programming
Advanced Language Features
Numbers
7 kyu
Complete The Pattern #7 - Cyclical Permutation
35
35
8
92%
of
166
1,186
curious_db97
Fundamentals
Loops
Control Flow
Basic Language Features
Sequences
Arrays
7 kyu
Square Pi's
7
7
1
86%
of
121
434
Heated
1 Issue Reported
Algorithms
Sequences
Arrays
5 kyu
Recursive Floor Sequence
7
7
3
100%
of
8
29
NaMe613
2 Issues Reported
Algorithms
Sequences
Arrays
Numbers
6 kyu
Shortest steps to a number
40
40
11
94%
of
202
1,166
bdowds
Puzzles
Games
Mathematics
Algorithms
Numbers
Fundamentals
Loops
Control Flow
Basic Language Features
Sequences
Arrays
7 kyu
Pernicious Numbers
12
12
4
90%
of
92
330
AcesOfGlory
1 Issue Reported
Algorithms
Arrays
Binary
Sequences
7 kyu
Is Sator Square?
2
2
1
88%
of
43
106
rowcased
Algorithms
Arrays
Data Structures
Sequences
5 kyu
Mixbonacci
38
38
14
93%
of
84
271
suic
Fundamentals
Sequences
Arrays
6 kyu
Collatz
29
29
7
94%
of
327
1,993
trent.armstrong
Algorithms
Expressions
Basic Language Features
Fundamentals
Arithmetic
Mathematics
Numbers
Sequences
Arrays
6 kyu
Sum of a Sequence [Hard-Core Version]
60
60
17
88%
of
148
561
GiacomoSorbi
1 Issue Reported
Algorithms
Optimization
Sequences
Arrays
Arithmetic
Mathematics
Numbers
7 kyu
Recaman Sequence
5
5
0
77%
of
46
82
dasoca
Algorithms
Sequences
Arrays
Numbers
7 kyu
Sum of the first nth term of Series
669
669
90
85%
of
4,471
34,995
curious_db97
Fundamentals
Loops
Control Flow
Basic Language Features
Arithmetic
Mathematics
Algorithms
Numbers
Sequences
Arrays
7 kyu
Triple Shiftian Numbers
19
19
5
83%
of
85
395
GiacomoSorbi
1 Issue Reported
Fundamentals
Arithmetic
Mathematics
Algorithms
Numbers
Sequences
Arrays
6 kyu
Button sequences
9
9
3
90%
of
30
70
SADragonMaker
Puzzles
Strings
Games
Sequences
Arrays
7 kyu
Arithmetic sequence - sum of n elements
15
15
8
93%
of
282
1,539
baaart
Fundamentals
Sequences
Arrays
7 kyu
intTunes
12
12
3
62%
of
34
166
cmistrata
Algorithms
Arrays
Lists
Data Structures
Fundamentals
Sequences
6 kyu
Lucas numbers
50
50
1
88%
of
94
1,085
NaMe613
1 Issue Reported
Algorithms
Numbers
Sequences
Arrays
6 kyu
Unknown amount of duplicates. One missing number.
17
17
4
92%
of
88
282
raulbc777
Fundamentals
Declarative Programming
Functions
Control Flow
Basic Language Features
Numbers
Sequences
Arrays
Mathematics
Algorithms
Sorting
Performance
6 kyu
Find The Duplicated Number in a Consecutive Unsorted List - Tougher Version
18
18
5
90%
of
138
750
GiacomoSorbi
Algorithms
Lists
Data Structures
Arrays
Sequences
Loading...
Confirm