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
BF (Beta)
C
Clojure
CoffeeScript
C++
Crystal
C#
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Fortran (Beta)
F#
Go
Groovy (Beta)
Haskell
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)
Ruby
Rust
Scala (Beta)
Shell
Solidity (Beta)
SQL
Swift
TypeScript
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 (3770)
Algorithms (2721)
Data Types (2285)
Logic (1987)
Numbers (1169)
Strings (1103)
Puzzles (1092)
Arrays (949)
Games (932)
Mathematics (885)
Basic Language Features (809)
Programming Paradigms (733)
Data Structures (535)
Control Flow (529)
Declarative Programming (456)
Advanced Language Features (313)
Regular Expressions (240)
Object-oriented Programming (230)
Functions (205)
Lists (196)
Functional Programming (164)
Arithmetic (161)
Loops (158)
Objects (136)
Bugs (128)
Data (124)
Algebra (114)
Theoretical Computer Science (109)
Sorting (104)
Security (103)
Parsing (96)
Computability Theory (95)
Recursion (95)
Performance (94)
Binary (93)
Classes (92)
Optimization (88)
Integers (87)
Utilities (85)
Databases (83)
Information Systems (83)
SQL (81)
Cryptography (77)
Geometry (76)
Graphs (73)
Dates/Time (68)
Sequences (57)
Design Principles (56)
Design Patterns (55)
Formatting (51)
57 Kata Found
6 kyu
Tribonacci Sequence
718
718
128
87%
of
4,817
31,478
GiacomoSorbi
Fundamentals
Sequences
Arrays
Arithmetic
Mathematics
Algorithms
Numbers
Lists
Data Structures
7 kyu
Sum of the first nth term of Series
423
423
60
85%
of
2,834
21,635
curious_db97
Fundamentals
Loops
Control Flow
Basic Language Features
Arithmetic
Mathematics
Algorithms
Numbers
Sequences
Arrays
7 kyu
Triple Shiftian Numbers
16
16
2
83%
of
54
299
GiacomoSorbi
Fundamentals
Arithmetic
Mathematics
Algorithms
Numbers
Sequences
Arrays
6 kyu
Button sequences
3
3
2
97%
of
16
43
SADragonMaker
Puzzles
Strings
Games
Sequences
Arrays
7 kyu
Arithmetic sequence - sum of n elements
15
15
2
94%
of
212
1,053
baaart
Fundamentals
Sequences
Arrays
6 kyu
A disguised sequence (I)
71
71
10
83%
of
330
1,829
g964
Algorithms
Sequences
Arrays
4 kyu
Square into Squares. Protect trees!
774
774
108
93%
of
501
2,809
g964
Fundamentals
Mathematics
Algorithms
Numbers
Sequences
Arrays
7 kyu
intTunes
6
6
2
73%
of
20
44
cmistrata
Algorithms
Arrays
Lists
Data Structures
Fundamentals
Sequences
5 kyu
Mixbonacci
25
25
8
96%
of
51
155
suic
Fundamentals
Sequences
Arrays
6 kyu
Lucas numbers
45
45
0
92%
of
59
1,000
NaMe613
1 Issue Reported
Algorithms
Numbers
Sequences
Arrays
6 kyu
Sum of a Sequence [Hard-Core Version]
40
40
12
91%
of
91
328
GiacomoSorbi
1 Issue Reported
Algorithms
Optimization
Sequences
Arrays
Arithmetic
Mathematics
Numbers
6 kyu
Unknown amount of duplicates. One missing number.
16
16
2
94%
of
62
186
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
13
13
4
89%
of
85
607
GiacomoSorbi
Algorithms
Lists
Data Structures
Arrays
Sequences
5 kyu
Simple number sequence
55
55
9
99%
of
54
199
KenKamau
Algorithms
Sequences
Arrays
Strings
6 kyu
#10 Matrices: Creating Hankel Matrices
1
1
1
94%
of
8
19
raulbc777
Fundamentals
Declarative Programming
Numbers
Sequences
Arrays
Mathematics
Algorithms
Control Flow
Basic Language Features
6 kyu
Sequences and Series
35
35
8
88%
of
246
2,390
BattleRattle
1 Issue Reported
Puzzles
Sequences
Arrays
Mathematics
Algorithms
Numbers
6 kyu
Stern-Brocot Sequence Part I
2
2
0
97%
of
16
38
erdos2n
Algorithms
Sequences
Arrays
Arithmetic
Mathematics
Numbers
5 kyu
Unique digit sequence
22
22
5
96%
of
54
206
KenKamau
Algorithms
Sequences
Arrays
7 kyu
Arithmetic progression
25
25
10
89%
of
369
1,822
baaart
1 Issue Reported
Fundamentals
Sequences
Arrays
6 kyu
Friendly Pairs I
7
7
0
93%
of
20
41
erdos2n
Algorithms
Sequences
Arrays
Arithmetic
Mathematics
Numbers
6 kyu
Ulam Sequences
8
8
2
96%
of
13
44
erdos2n
Algorithms
Sequences
Arrays
Arithmetic
Mathematics
Numbers
4 kyu
Longest Common Subsequence (Performance version)
64
64
16
97%
of
88
348
Algorithms
Performance
Strings
Sequences
Arrays
6 kyu
What's the pattern?
19
19
5
94%
of
60
177
kingcobra
Algorithms
Mathematics
Numbers
Sequences
Arrays
Arithmetic
6 kyu
Longest Consecutive Sequence of Squares
12
12
4
97%
of
29
106
kodejuice
Algorithms
Numbers
Mathematics
Sequences
Arrays
5 kyu
Creating a new LINQ operator: SelectConsecutive
17
17
3
100%
of
11
47
LesRamer
Fundamentals
Functional Programming
Declarative Programming
Sequences
Arrays
6 kyu
Array reduction
12
12
6
92%
of
42
104
KenKamau
Algorithms
Sequences
Arrays
6 kyu
First order Chebyshev polynomials
2
2
4
87%
of
19
43
user7657844
Algorithms
Sequences
Arrays
6 kyu
Life without primes
18
18
0
92%
of
78
213
KenKamau
Algorithms
Sequences
Arrays
7 kyu
Divisible by previous digit?
3
3
3
88%
of
55
124
eliassjogreen
Algorithms
Sequences
Arrays
Numbers
7 kyu
Sum to infinity of a Geometric Sequence
3
3
1
74%
of
31
84
UppyMeister
1 Issue Reported
Fundamentals
Mathematics
Algorithms
Numbers
Arithmetic
Sequences
Arrays
Loading...
Confirm