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)
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 (4027)
Algorithms (2983)
Data Types (2439)
Logic (2171)
Numbers (1283)
Strings (1171)
Puzzles (1168)
Arrays (1019)
Games (980)
Mathematics (980)
Basic Language Features (843)
Programming Paradigms (795)
Data Structures (571)
Control Flow (554)
Declarative Programming (489)
Advanced Language Features (347)
Regular Expressions (263)
Object-oriented Programming (243)
Functions (211)
Lists (208)
Functional Programming (173)
Arithmetic (171)
Loops (167)
Objects (142)
Bugs (131)
Algebra (128)
Data (126)
Theoretical Computer Science (117)
Performance (113)
Security (111)
Sorting (108)
Parsing (104)
Computability Theory (103)
Recursion (103)
Classes (96)
Binary (95)
Optimization (95)
Integers (93)
Geometry (86)
Utilities (86)
Cryptography (85)
Databases (83)
Information Systems (83)
SQL (81)
Graphs (79)
Dates/Time (73)
Sequences (64)
Design Principles (61)
Design Patterns (59)
Hashes (52)
32 Kata Found
5 kyu
Tree Reconstruction
25
25
8
100%
of
13
72
benmathes
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
Fun with trees: max sum
73
73
33
93%
of
227
1,082
janitormeir
1 Issue Reported
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
Binary Search Trees
Binary
5 kyu
Complete Binary Tree
42
42
12
90%
of
20
71
ecolban
Fundamentals
Binary Search Trees
Trees
Binary
Data Structures
4 kyu
Google interview
1
1
4
83%
of
15
64
ice1000
Algorithms
Theorem Proving
Data Structures
Trees
5 kyu
Lisp Combination Trees
6
6
5
100%
of
10
19
JStubb7939
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
Regular Expressions
Declarative Programming
Advanced Language Features
Fundamentals
Strings
Mathematics
Numbers
4 kyu
Sort binary tree by levels
178
178
35
92%
of
299
2,216
kars7e
1 Issue Reported
Algorithms
Trees
Data Structures
Binary Search Trees
Binary
Performance
6 kyu
Tree Depth
6
6
6
81%
of
54
197
leesharma
2 Issues Reported
Fundamentals
Trees
Data Structures
Hashes
Recursion
Algorithms
Computability Theory
Theoretical Computer Science
5 kyu
Sweeping trees
9
9
5
91%
of
17
48
hyperion
2 Issues Reported
Algorithms
Trees
Data Structures
Graphs
Optimization
6 kyu
Make a spanning tree
11
11
8
94%
of
16
34
FArekkusu
Algorithms
Graphs
Data Structures
Trees
6 kyu
Possibilities of throwing a coin n times
28
28
13
95%
of
114
365
Gerry Soft
Fundamentals
Mathematics
Algorithms
Numbers
Statistics
Data
Sorting
Trees
Data Structures
Permutations
Performance
5 kyu
Binary search tree validation
44
44
25
92%
of
73
243
plastic
1 Issue Reported
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
Balance the tree
8
8
3
91%
of
27
61
ykagan
Algorithms
Trees
Data Structures
6 kyu
The Binary Tree, or There and Back Again
7
7
8
90%
of
15
64
dmitvitalii
Algorithms
Data Structures
Trees
6 kyu
Tree Directory
20
20
3
94%
of
26
55
JStubb7939
Algorithms
Data Structures
Binary Search Trees
Trees
Binary
Objects
Recursion
Computability Theory
Theoretical Computer Science
7 kyu
Find Max Tree Node
6
6
7
94%
of
54
220
eranha
Algorithms
Recursion
Computability Theory
Theoretical Computer Science
Recursion Theory
Mathematical Logic
Mathematics
Binary Search Trees
Trees
Binary
Data Structures
5 kyu
Fun with lists: trees edition
18
18
6
95%
of
32
86
janitormeir
Algorithms
Trees
Data Structures
Lists
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
Fundamentals
Binary Search Trees
Binary
6 kyu
Sum The Tree
124
124
36
88%
of
470
2,467
jz9000
7 Issues Reported
Fundamentals
Trees
Data Structures
Recursion
Algorithms
Computability Theory
Theoretical Computer Science
Binary Search Trees
Binary
5 kyu
How deep do these trees even go?
11
11
4
91%
of
16
27
Voile
Fundamentals
Data Structures
Trees
5 kyu
Binary Tree Serpentine Traversal
14
14
7
96%
of
39
104
Ban-Ath
1 Issue Reported
Algorithms
Binary Search Trees
Trees
Binary
Data Structures
Traversal
Recursion
Computability Theory
Theoretical Computer Science
7 kyu
Array Manipulation
18
18
4
91%
of
119
352
kodejuice
Algorithms
Arrays
Numbers
Binary Search Trees
Trees
Binary
Data Structures
5 kyu
Fun with trees: lists edition
41
41
16
96%
of
62
209
janitormeir
Algorithms
Trees
Data Structures
Lists
Functional Programming
Declarative Programming
Higher-order Functions
Functions
Control Flow
Basic Language Features
Fundamentals
Binary Search Trees
Binary
5 kyu
Fun with trees: is perfect
57
57
27
85%
of
144
666
janitormeir
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
Binary Search Trees
Binary
5 kyu
Tree to list
31
31
9
96%
of
64
285
mlyundin
3 Issues Reported
Fundamentals
Trees
Data Structures
5 kyu
Fun with trees: array to tree
132
132
35
94%
of
207
993
janitormeir
1 Issue Reported
Algorithms
Trees
Data Structures
Arrays
Binary Search Trees
Binary
6 kyu
Invert binary tree
5
5
2
91%
of
35
109
baracchande
Algorithms
Trees
Data Structures
6 kyu
Binary Tree Compare
38
38
19
93%
of
109
494
bovard
1 Issue Reported
Algorithms
Binary Search Trees
Trees
Binary
Data Structures
5 kyu
Tree leaves at same level
23
23
4
79%
of
35
186
jlordiales
1 Issue Reported
Algorithms
Trees
Data Structures
Recursion
Computability Theory
Theoretical Computer Science
6 kyu
Simple min heap implementation
14
14
4
89%
of
45
256
kirjs
1 Issue Reported
Algorithms
Heaps
Trees
Data Structures
5 kyu
Valid Binary Christmas Tree
16
16
4
82%
of
51
283
1 Issue Reported
Algorithms
Hacking Holidays
Trees
Data Structures
Validation
5 kyu
Process trees
35
35
3
91%
of
56
300
isbadawi
Algorithms
Trees
Data Structures
Arrays
Loading...
Confirm