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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
1,340codeo
Strings
Regular Expressions
Algorithms
Fundamentals
5 kyu
Mod4 Regex
1,875wthit56
Regular Expressions
Strings
Fundamentals
6 kyu
extract portion of file name
7,861Javatlacati
Regular Expressions
Fundamentals
7 kyu
Regex validate PIN code
162,839JMurphyWeb
Regular Expressions
Fundamentals
8 kyu
validate code with simple regex
12,138daymos
Regular Expressions
Fundamentals
8 kyu
Regex count lowercase letters
19,237tdowek1
Fundamentals
Regular Expressions
Algorithms
7 kyu
Regexp Basics - is it a eight bit signed number?
850taw
Bits
Binary
Strings
Regular Expressions
Fundamentals
7 kyu
Regexp Basics - is it all whitespace?
1,372taw
Regular Expressions
Fundamentals
7 kyu
Sir , showMe yourID
903gomesalexandre
Regular Expressions
Strings
Fundamentals
7 kyu
regex validation of 24 hours time.
1,588daymos
Regular Expressions
Date Time
Fundamentals
7 kyu
Where's Wally
1,027JMurphyWeb
Regular Expressions
Fundamentals
7 kyu
Valid HK Phone Number
1,114donaldsebleung
Regular Expressions
Fundamentals
7 kyu
UVB-76 Message Validator
964Drymonade
Algorithms
Strings
Regular Expressions
7 kyu
Dad is Commatose
1,118coudrew
Fundamentals
Strings
Regular Expressions
7 kyu
Nothing special
1,158EricDalrymple91
Fundamentals
Regular Expressions
6 kyu
Master of Files
1,290gomesalexandre
Strings
Regular Expressions
Fundamentals
7 kyu
Nickname Generator
10,886cboha
Strings
Regular Expressions
Fundamentals
7 kyu
The Ladies of ENIAC
1,632nogainbar
Strings
Regular Expressions
Fundamentals
7 kyu
Remove HTML tags using regexp
1,154drogimex
Regular Expressions
Fundamentals
Retired
IPv4 Validator (retired)
825user9816389
Fundamentals
Strings
Regular Expressions
7 kyu
Date Format Validation
928Peter Rhodes
Regular Expressions
Strings
Fundamentals
7 kyu
Fruit string calculator
1,803OlyaY
Strings
Regular Expressions
Fundamentals
7 kyu
Russian postal code checker
2,725dreadknight2008
Regular Expressions
Strings
Fundamentals
5 kyu
Not very secure
41,899mayrsascha
Regular Expressions
Strings
5 kyu
Regex Password Validation
26,979EricFreeman
Regular Expressions
Fundamentals
7 kyu
SevenAte9
5,679debri
Logic
Strings
Fundamentals
6 kyu
Convert string to camel case
177,543jhoffner
Regular Expressions
Algorithms
Strings
7 kyu
Numbers in strings
6,814KenKamau
Strings
Algorithms
Retired
Sum up the random string (retired)
3,050sunboshan
Strings
Regular Expressions
Fundamentals
7 kyu
Thinkful - String Drills: Areacode extractor
2,296Grae-Drake
Strings
Regular Expressions
Fundamentals
6 kyu
Arabian String
2,511dacoxall
Strings
Algorithms