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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.

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6 kyu
Checkered Board
1,601Katbow
Strings
ASCII Art
Fundamentals
6 kyu
Parse the log
414IVBakker
Regular Expressions
Parsing
Fundamentals
6 kyu
Arrays Similar
3,662jgable
Arrays
Algorithms
5 kyu
Conway's Game of Life
2,298ssineriz
Games
Graphics
Puzzles
Cellular Automata
5 kyu
Simple Time Bomb
2,370constablebrew
Reverse Engineering
Games
Puzzles
6 kyu
Convert string to camel case
194,045jhoffner
Regular Expressions
Algorithms
Strings
5 kyu
RGB To Hex Conversion
134,021jhoffner
Algorithms
5 kyu
Convert PascalCase string into snake_case
15,200OlgaGr
Strings
Algorithms
Regular Expressions
5 kyu
Regex Password Validation
28,628EricFreeman
Regular Expressions
Fundamentals
5 kyu
Mongodb ObjectID
1,514user9027523
MongoDB
Regular Expressions
Strings
Fundamentals
5 kyu
RPG dice roller
280ankr
Regular Expressions
Arrays
Algorithms
5 kyu
I Spy
4,594glebec
Functional Programming
5 kyu
Street Fighter 2 - Character Selection - Part 2
1,991mmalkavian
Arrays
Lists
Fundamentals
Graph Theory
6 kyu
IP Validation
42,115wink
Regular Expressions
Algorithms
4 kyu
Roman Numerals Helper
30,381jhoffner
Algorithms
Object-oriented Programming
4 kyu
Strip Comments
52,941jhoffner
Strings
Algorithms
4 kyu
LRU Cache
511xcthulhu
Data Structures
Metaprogramming
Algorithms
6 kyu
Coordinates Validator
6,909louy
Regular Expressions
Algorithms
4 kyu
Undo/Redo
3,613surtich
Algorithms
Fundamentals
Object-oriented Programming
4 kyu
UriBuilder
1,669jhoffner
Object-oriented Programming
Strings
Parsing
Algorithms
4 kyu
Breadcrumb Generator
4,617GiacomoSorbi
Parsing
Regular Expressions
Algorithms
5 kyu
Hello W... wait what?
1,908MentalAtom
Puzzles
Algorithms
5 kyu
Can you get the loop ?
28,607Devouring
Algorithms
Linked Lists
Performance
5 kyu
Base64 Encoding
5,154joseph.varnado
Binary
Strings
Algorithms
3 kyu
Defuse the bombs!
2,726Zyklus
Strings
Puzzles
Security
Retired
Escape the Mines ! (retired)
2,510damned3
Data Structures
Algorithms
Puzzles
Graph Theory
5 kyu
Binary Genetic Algorithms
1,651eugene-bulkin
Genetic Algorithms
Machine Learning
Fundamentals
Data Science
Tutorials
2 kyu
Evaluate mathematical expression
9,580ankr
Mathematics
Parsing
Algorithms