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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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7 kyu
Bob's Short Forms
1,423codeo
Strings
Regular Expressions
Algorithms
Fundamentals
5 kyu
Mod4 Regex
1,911wthit56
Regular Expressions
Strings
Fundamentals
6 kyu
extract portion of file name
8,213Javatlacati
Regular Expressions
Fundamentals
7 kyu
Regex validate PIN code
178,214JMurphyWeb
Regular Expressions
Fundamentals
8 kyu
validate code with simple regex
13,940daymos
Regular Expressions
Fundamentals
8 kyu
Regex count lowercase letters
20,986tdowek1
Fundamentals
Regular Expressions
Algorithms
7 kyu
Regexp Basics - is it a eight bit signed number?
923taw
Bits
Binary
Strings
Regular Expressions
Fundamentals
7 kyu
Regexp Basics - is it all whitespace?
1,454taw
Regular Expressions
Fundamentals
7 kyu
Sir , showMe yourID
1,298gomesalexandre
Regular Expressions
Strings
Fundamentals
7 kyu
regex validation of 24 hours time.
1,749daymos
Regular Expressions
Date Time
Fundamentals
7 kyu
Where's Wally
1,061JMurphyWeb
Regular Expressions
Fundamentals
7 kyu
Valid HK Phone Number
1,233donaldsebleung
Regular Expressions
Fundamentals
7 kyu
UVB-76 Message Validator
994Drymonade
Algorithms
Strings
Regular Expressions
7 kyu
Dad is Commatose
1,237coudrew
Fundamentals
Strings
Regular Expressions
7 kyu
Nothing special
1,614EricDalrymple91
Fundamentals
Regular Expressions
6 kyu
Master of Files
1,340gomesalexandre
Strings
Regular Expressions
Fundamentals
7 kyu
Nickname Generator
11,742cboha
Strings
Regular Expressions
Fundamentals
7 kyu
The Ladies of ENIAC
1,699nogainbar
Strings
Regular Expressions
Fundamentals
7 kyu
Remove HTML tags using regexp
1,218drogimex
Regular Expressions
Fundamentals
Retired
IPv4 Validator (retired)
825user9816389
Fundamentals
Strings
Regular Expressions
7 kyu
Date Format Validation
1,016Peter Rhodes
Regular Expressions
Strings
Fundamentals
7 kyu
Fruit string calculator
1,960OlyaY
Strings
Regular Expressions
Fundamentals
7 kyu
Russian postal code checker
2,811dreadknight2008
Regular Expressions
Strings
Fundamentals
5 kyu
Not very secure
47,214mayrsascha
Regular Expressions
Strings
5 kyu
Regex Password Validation
28,724EricFreeman
Regular Expressions
Fundamentals
7 kyu
SevenAte9
6,126debri
Logic
Strings
Fundamentals
6 kyu
Convert string to camel case
194,932jhoffner
Regular Expressions
Algorithms
Strings
7 kyu
Numbers in strings
7,012KenKamau
Strings
Algorithms
8 kyu
FIXME: Replace all dots
32,286dinglemouse
Debugging
Regular Expressions
Retired
Sum up the random string (retired)
3,050sunboshan
Strings
Regular Expressions
Fundamentals
7 kyu
Thinkful - String Drills: Areacode extractor
2,364Grae-Drake
Strings
Regular Expressions
Fundamentals
6 kyu
Arabian String
2,577dacoxall
Strings
Algorithms