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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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5 kyu
Josephus Permutation
16,765GiacomoSorbi
Mathematics
Permutations
Algorithms
Combinatorics
6 kyu
Most Frequent Weekdays
3,653suic
Fundamentals
6 kyu
Slices of a Series of Digits
421noku
Algorithms
Data Structures
6 kyu
The Vowel Code
22,406yaphi1
Arrays
Strings
Regular Expressions
Fundamentals
6 kyu
Build Tower
107,0458fdafs2
Strings
ASCII Art
Fundamentals
6 kyu
Basics 03: Strings, Numbers and Calculation
1,989smile67
Strings
Fundamentals
Mathematics
Arrays
6 kyu
Arrh, grabscrab!
7,480matstc
Strings
Algorithms
6 kyu
Pairs of Bears
2,182PG1
Fundamentals
Strings
Arrays
6 kyu
A String of Sorts
1,993Lordnibbler
Strings
Sorting
Algorithms
6 kyu
Character with longest consecutive repetition
11,850suic
Strings
Fundamentals
Algorithms
6 kyu
String subpattern recognition I
1,781GiacomoSorbi
Strings
Regular Expressions
Fundamentals
6 kyu
Sums of Parts
25,538g964
Fundamentals
Performance
Algorithms
5 kyu
Play with two Strings
3,614smile67
Fundamentals
Strings
Algorithms
5 kyu
String incrementer
52,104parceval
Regular Expressions
Strings
6 kyu
Two Sum
88,449wthit56
Arrays
Fundamentals
Algorithms
7 kyu
Common Substrings
2,179Shivo
Strings
Algorithms
7 kyu
Credit Card Mask
199,301samranjbari
Strings
Algorithms