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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
Round and Round
936Voile
Fundamentals
Debugging
8 kyu
Barking mad
10,936niknmix
Fundamentals
Object-oriented Programming
4 kyu
Strip Comments
52,585jhoffner
Strings
Algorithms
4 kyu
Validate Sudoku with size `NxN`
9,346cbmono
Arrays
Puzzles
Algorithms
Object-oriented Programming
6 kyu
Create Phone Number
333,091xDranik
Arrays
Strings
Regular Expressions
Algorithms
7 kyu
Sort the climbing grades
1,032Chris_Rands
Fundamentals
Lists
Data Structures
Sorting
Arrays
Strings
5 kyu
Don't Drink the Water
2,564NateBrady23
Algorithms
Arrays
Sorting
Lists
7 kyu
Convert Integer to Binary
1,985DivyanshBatham
Binary
Fundamentals
6 kyu
Simple Substitution Cipher Helper
3,619jacobb
Ciphers
Security
Object-oriented Programming
Strings
Algorithms
6 kyu
Character with longest consecutive repetition
11,509suic
Strings
Fundamentals
Algorithms
7 kyu
Strong password?
892mkelty
Regular Expressions
Fundamentals
6 kyu
telephone words
331mishasaggi
Strings
Arrays
Algorithms
6 kyu
Sort the columns of a csv-file
1,034user5036852
Strings
Arrays
Algorithms
Sorting
5 kyu
Basic Nico variation
1,123dcieslak
Ciphers
Strings
Fundamentals
6 kyu
Cartesian product
178kingcobra
Mathematics
Sets
Set Theory
Algorithms
5 kyu
Binary Tree Traversal
2,023Ban-Ath
Binary Trees
Trees
Recursion
Data Structures
Algorithms
6 kyu
@count_calls
194kingcobra
Fundamentals