Kata Library: Haskell Practice
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algebra
1
Algorithms
128
Arrays
343
Binary
3
Binary Trees
2
Bits
2
Cellular Automata
1
Ciphers
2
Combinatorics
1
Cryptography
2
Data Science
1
Data Structures
10
Debugging
1
Design Patterns
1
Dynamic Programming
2
Esoteric Languages
4
Filtering
1
Functional Programming
5
Fundamentals
218
Game Solvers
1
Games
10
Geometry
3
Interpreters
4
Language Features
1
Linear Algebra
1
Lists
43
Logic
17
Mathematics
27
Matrix
5
Number Theory
3
Object-oriented Programming
1
Parsing
1
Performance
7
Puzzles
18
Recursion
5
Refactoring
2
Regular Expressions
7
Restricted
1
Security
1
Sorting
26
Statistics
2
Strings
74
Trees
2
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
343 Kata Found
5 kyu
Divide and maximize
233
AveragePythonEnjoyer
1 Issue Reported
Puzzles
Lists
Arrays
Mathematics
6 kyu
Mexican Wave
73,547
adrian.eyre
3 Issues Reported
Arrays
Strings
Fundamentals
6 kyu
Hyper Sphere
2,217
CrowdHailer
Mathematics
Arrays
Fundamentals
8 kyu
Count of positives / sum of negatives
160,932
Dentzil
10 Issues Reported
Fundamentals
Arrays
Lists
8 kyu
Sort and Star
51,982
PG1
2 Issues Reported
Fundamentals
Strings
Arrays
Sorting
8 kyu
Is there a vowel in there?
15,591
PG1
2 Issues Reported
Fundamentals
Strings
Arrays
8 kyu
Sum Arrays
199,100
richardhsu
3 Issues Reported
Arrays
Fundamentals
7 kyu
The 'spiraling' box
1,933
brodiemark
1 Issue Reported
Arrays
Fundamentals
6 kyu
Flip Your Stack (of Pancakes)
523
brodiemark
Arrays
Sorting
7 kyu
Pernicious Numbers
684
AcesOfGlory
2 Issues Reported
Arrays
Binary
Algorithms
7 kyu
Chinese Zodiac
2,188
AcesOfGlory
Fundamentals
Arrays
7 kyu
Name Array Capping
8,735
ogryzek
1 Issue Reported
Strings
Arrays
Fundamentals
7 kyu
Partial Word Searching
8,089
obnounce
4 Issues Reported
Arrays
Strings
Fundamentals
6 kyu
Points On A Line
1,568
prksingh
1 Issue Reported
Arrays
Geometry
Fundamentals
6 kyu
Name to Matrix
969
Coder_38
1 Issue Reported
Strings
Arrays
Algorithms
Matrix
8 kyu
Removing Elements
81,823
MorgzC41
1 Issue Reported
Lists
Arrays
Fundamentals
7 kyu
Status Arrays
611
NoSoCo
Arrays
Algorithms
8 kyu
Count the Monkeys!
72,689
PG1
1 Issue Reported
Arrays
Fundamentals
Lists
Algorithms
7 kyu
Harry and the Mathematician's Chicken
261
developess
Puzzles
Arrays
Fundamentals
8 kyu
Remove duplicates from list
39,444
wichu
2 Issues Reported
Fundamentals
Arrays
Lists
6 kyu
Fill in the gaps in my timesheet.
647
Insti
1 Issue Reported
Arrays
Algorithms
6 kyu
Two Sets of Equal Sum
1,287
brodiemark
Arrays
Algorithms
6 kyu
Fibonacci, Tribonacci and friends
13,768
GiacomoSorbi
13 Issues Reported
Arrays
Lists
Number Theory
Fundamentals
7 kyu
Head, Tail, Init and Last
17,436
user578387
1 Issue Reported
Arrays
Lists
Fundamentals
7 kyu
Looking for a benefactor
10,889
g964
Fundamentals
Arrays
6 kyu
Find the unique number
152,907
isqua
4 Issues Reported
Fundamentals
Algorithms
Arrays
Performance
6 kyu
Array Product (Sans n)
708
Firefly2002
1 Issue Reported
Arrays
Fundamentals
7 kyu
The Poet And The Pendulum
4,802
MrZizoScream
4 Issues Reported
Fundamentals
Arrays
Algorithms
Performance
7 kyu
Tetris Series #1 — Scoring System
1,918
Etoneja
1 Issue Reported
Fundamentals
Games
Algorithms
Arrays
7 kyu
Array Leaders (Array Series #3)
8,595
MrZizoScream
1 Issue Reported
Fundamentals
Arrays
Loading...
Confirm
Collect:
undefined
Loading collection data...