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3 kyu
Alphabetic Anagrams
6,991Azuaron
Mathematics
Logic
Strings
Algorithms
4 kyu
Sum by Factors
20,607g964
Arrays
Algorithms
Mathematics
4 kyu
Hamming Numbers
12,946xcthulhu
Number Theory
Algorithms
6 kyu
Reverse polish notation calculator
11,659vgrichina
Algorithms
Mathematics
Interpreters
Parsing
Strings
5 kyu
Base -2
1,098sergiogarciadev
Algorithms
Binary
5 kyu
Integers: Recreation One
28,122g964
Fundamentals
Algorithms
6 kyu
Statistics for an Athletic Association
11,393g964
Fundamentals
Strings
Statistics
Mathematics
Data Science
5 kyu
Rule 30
949MircoT
Lists
Arrays
Binary
Puzzles
5 kyu
John and Ann sign up for Codewars
3,996g964
Mathematics
Algorithms
6 kyu
String Pyramid
741user5036852
Mathematics
Strings
Algorithms
ASCII Art
6 kyu
Bit Counting
263,334xcthulhu
Bits
Algorithms
6 kyu
Give me a Diamond
38,973jayeshcp
Strings
ASCII Art
Fundamentals
6 kyu
Create Phone Number
362,169xDranik
Arrays
Strings
Regular Expressions
Algorithms
5 kyu
Simple Encryption #4 - Qwerty
821user5036852
Cryptography
Security
Strings
Algorithms
6 kyu
Simple Encryption #1 - Alternating Split
30,436user5036852
Cryptography
Algorithms
Strings
Arrays
Fundamentals
5 kyu
Linked Lists - Alternating Split
1,693JDeBolt
Data Structures
Linked Lists
Fundamentals
5 kyu
Simple Encryption #2 - Index-Difference
909user5036852
Fundamentals
Cryptography
Security
Strings
Arrays
Algorithms
6 kyu
Street Fighter 2 - Character Selection
12,246mmalkavian
Arrays
Lists
Fundamentals
Graph Theory
1 kyu
Puzzle Fighter
185docgunthrop
Games
Logic
Game Solvers
Algorithms
4 kyu
Area of House from Path of Mouse
149docgunthrop
Strings
Puzzles
Algorithms
5 kyu
Ziggurat Ride of Fortune
280docgunthrop
Arrays
Performance
Algorithms
5 kyu
Street Fighter 2 - Character Selection - Part 2
2,092mmalkavian
Arrays
Lists
Fundamentals
Graph Theory
3 kyu
Sudoku Solver
15,520pineappleclock
Games
Game Solvers
Algorithms
3 kyu
Bloxorz Solver
463docgunthrop
Games
Puzzles
Game Solvers
Algorithms
2 kyu
Hard Sudoku Solver
955f.rodrigues
Games
Algorithms
Game Solvers
Puzzles
3 kyu
Hard Sudoku Solver
1,142Marx314
Algorithms
Games
Puzzles
Game Solvers
6 kyu
IP Validation
45,434wink
Regular Expressions
Algorithms
4 kyu
Insane Increasing or Decreasing Numbers
143Bubbler
Algorithms
Mathematics
Puzzles
Performance
2 kyu
Full Metal Chemist #1: build me...
375Blind4Basics
Object-oriented Programming
Fundamentals
3 kyu
Stargate SG-1: Cute and Fuzzy (Improved version)
695Blind4Basics
Algorithms
Data Structures
Graph Theory
6 kyu
Pizza pieces
2,411Yabiten
Mathematics
Algorithms
4 kyu
Human readable duration format
89,085davazp
Strings
Date Time
Algorithms
3 kyu
The builder of things
1,069jhoffner
Metaprogramming
Domain Specific Languages
Algorithms
Language Features
3 kyu
N-Parasitic Numbers Ending in N
1,011LesRamer
Algorithms
Mathematics
Puzzles
4 kyu
Magnet particules in boxes
7,938g964
Mathematics
Matrix
Algorithms
4 kyu
Pyramid Slide Down
19,836rodentrabies
Algorithms
Dynamic Programming
5 kyu
Can you get the loop ?
30,327Devouring
Algorithms
Linked Lists
Performance
4 kyu
Can you really count divisors?
561kabaczek83
Algorithms
Mathematics
5 kyu
Morse Encoding
1,265constablebrew
Bits
Strings
Binary
Parsing
Algorithms
6 kyu
Keyword Cipher Helper
979jacobb
Cryptography
Ciphers
Security
Object-oriented Programming
Strings
4 kyu
Vigenère Cipher Helper
9,330jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
5 kyu
Caesar Cipher Helper
5,457eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Vigenère Autokey Cipher Helper
1,243jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
4 kyu
Escape the maze
946cyril-lemaire
Fundamentals
Algorithms
Retired
Escape the Mines ! (retired)
2,510damned3
Data Structures
Algorithms
Puzzles
Graph Theory
7 kyu
Form The Minimum
30,046MrZizoScream
Fundamentals
7 kyu
List Filtering
314,123cmgerber
Lists
Filtering
Data Structures
Fundamentals
6 kyu
CamelCase Method
48,860bestwebua
Fundamentals
Algorithms
Strings
7 kyu
Find the middle element
39,020myTerminal
Arrays
Fundamentals
6 kyu
Write Number in Expanded Form - Part 2
2,186Belax8
Mathematics
Algorithms
Fundamentals
4 kyu
String -> X-Iterations -> String
350Jomopipi
Algorithms
Puzzles
Mathematics
Language Features
3 kyu
Rail Fence Cipher: Encoding and Decoding
9,396darrentburgess
Algorithms
Ciphers
Cryptography
Strings
Security
4 kyu
Mystery Function
2,349ecolban
Fundamentals
4 kyu
Count ones in a segment
3,525d0n14
Binary
Performance
Algorithms
4 kyu
Mahjong - #1 Pure Hand
236Hacker Sakana
Games
Logic
Algorithms
4 kyu
Codewars style ranking system
18,693jhoffner
Algorithms
Object-oriented Programming
Retired
Calculator (retired)
11,547obrok
Algorithms
Parsing
Logic
Strings
Expressions
Basic Language Features
Fundamentals
4 kyu
Breadcrumb Generator
4,938GiacomoSorbi
Parsing
Regular Expressions
Algorithms
6 kyu
Progressive Spiral Number Distance
246GiacomoSorbi
Mathematics
Number Theory
Fundamentals
6 kyu
String subpattern recognition I
1,980GiacomoSorbi
Strings
Regular Expressions
Fundamentals
6 kyu
String subpattern recognition III
396GiacomoSorbi
Strings
Regular Expressions
Fundamentals
6 kyu
String subpattern recognition II
496GiacomoSorbi
Strings
Regular Expressions
Fundamentals
5 kyu
Count IP Addresses
33,142xDranik
Algorithms
6 kyu
N smallest elements in original order
3,093GiacomoSorbi
Arrays
Lists
Data Structures
Algorithms
6 kyu
Pyramid Array
19,929sahglie
Algorithms
6 kyu
Numericals of a String
3,683Jomopipi
Puzzles
Performance
Algorithms
5 kyu
RPG dice roller
303ankr
Regular Expressions
Arrays
Algorithms
5 kyu
Phone Directory
7,151g964
Fundamentals
Strings
6 kyu
Two Joggers
9,093user3339541
Mathematics
Algorithms
5 kyu
PaginationHelper
43,902jhoffner
Object-oriented Programming
Arrays
Algorithms
3 kyu
The Lift
3,584dinglemouse
Algorithms
Queues
Data Structures
2 kyu
Blaine is a pain
504dinglemouse
Fundamentals
4 kyu
How many numbers III?
4,791raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
6 kyu
Pascal's Triangle
11,774boatmeme
Arrays
Mathematics
Algorithms
5 kyu
Greed is Good
63,220JulianNicholls
Algorithms
4 kyu
Strings Mix
24,822g964
Fundamentals
Strings
2 kyu
Parsing and evaluation of mathematical expressions
190smile67
Algorithms
Data Structures
Parsing
Interpreters
Mathematics
2 kyu
Evaluate mathematical expression
10,184ankr
Mathematics
Parsing
Algorithms
5 kyu
Regex Password Validation
31,076EricFreeman
Regular Expressions
Fundamentals
5 kyu
Regex for Gregorian date validation
286kolichj
Strings
Regular Expressions
Fundamentals
3 kyu
Papers, Please
838docgunthrop
Object-oriented Programming
Games
Regular Expressions
Fundamentals
6 kyu
Count characters in your string
107,729riston
Strings
Fundamentals
6 kyu
Highest Scoring Word
109,936PG1
Fundamentals
Strings
Arrays
5 kyu
Sum of Pairs
28,182AlejandorLazaro
Memoization
Fundamentals
Performance
Retired
Vasya - Clerk (retired)
54,207AlexIsHappy
Fundamentals
Mathematics
Algorithms
Logic
Numbers
Games
5 kyu
Best travel
22,003g964
Fundamentals