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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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4 kyu
Snail
76,211stevenbarragan
Arrays
Algorithms
2 kyu
Evaluate mathematical expression
9,520ankr
Mathematics
Parsing
Algorithms
3 kyu
The builder of things
1,003jhoffner
Metaprogramming
Domain Specific Languages
Algorithms
Language Features
Retired
Calculator (retired)
11,547obrok
Algorithms
Parsing
Logic
Strings
Expressions
Basic Language Features
Fundamentals
3 kyu
Make a spiral
14,643Bugari
Algorithms
Arrays
Logic
4 kyu
How many numbers III?
3,982raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
4 kyu
Fluent Calculator
1,817lukasz-lysik
Mathematics
Metaprogramming
2 kyu
Ruby’s Eleven
357duchess_of_objects
Games
Security
Puzzles
Object-oriented Programming
4 kyu
Binary multiple of 3
7,404rsalgado
Regular Expressions
Algorithms
Puzzles
Number Theory
4 kyu
Permutational Primes
398raulbc777
Algorithms
Sorting
Permutations
Mathematics
Memoization
Data Structures
4 kyu
Explosive Sum
8,580surtich
Algorithms
Mathematics
Fundamentals
1 kyu
7×7 Skyscrapers
1,966JohanWiltink
Algorithms
Games
Performance
1 kyu
BECOME IMMORTAL
3,059Voile
Puzzles
Dynamic Programming
Performance
Algorithms
1 kyu
Faberge easter eggs crush test [linear]
1,558ice1000
Performance
Algorithms
Mathematics
2 kyu
Hard Sudoku Solver
851f.rodrigues
Games
Algorithms
Game Solvers
Puzzles
7 kyu
Reversing Fun
3,998Shivo
Strings
Fundamentals
Algorithms