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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
Strings Mix
23,113g964
Fundamentals
Strings
5 kyu
Sum of (Two) Squares
1,339boatmeme
Mathematics
Algorithms
6 kyu
Encrypt this!
22,567suic
Fundamentals
Strings
Regular Expressions
Arrays
Ciphers
Algorithms
Cryptography
Security
3 kyu
Make a spiral
14,594Bugari
Algorithms
Arrays
Logic
5 kyu
The Primes as a Result of the Longest Consecutive Sum I
177raulbc777
Performance
Algorithms
Mathematics
Data Structures
Arrays
Fundamentals
5 kyu
Numbers with The Highest Amount of Divisors
561raulbc777
Fundamentals
Algorithms
Data Structures
Mathematics
Arrays
6 kyu
Array Exchange
1,303hafizio
Arrays
Algorithms
Fundamentals
4 kyu
The Greatest Warrior
3,465BurstNova
Algorithms
Object-oriented Programming
4 kyu
Method Lockdown
911JoshBrodieNZ
Metaprogramming
2 kyu
Evaluate mathematical expression
9,498ankr
Mathematics
Parsing
Algorithms
Retired
Calculator (retired)
11,547obrok
Algorithms
Parsing
Logic
Strings
Expressions
Basic Language Features
Fundamentals
3 kyu
Hard Sudoku Solver
1,025Marx314
Algorithms
Games
Puzzles
Game Solvers