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6 kyu
The most common letter
1,406Dmitry Kudla
Completed Languages:
6 kyu
String searching with wildcard
1,364hansrusten
Completed Languages:
6 kyu
Collatz
5,480trent.armstrong
Completed Languages:
6 kyu
Integer with the longest Collatz sequence
1,014jsms90
Completed Languages:
5 kyu
The Clockwise Spiral
4,419alex.budiakov
Completed Languages:
6 kyu
Fibonacci, Tribonacci and friends
14,692GiacomoSorbi
Completed Languages:
6 kyu
Is it an isogram?
1,077DiegoSalazar
Completed Languages:
7 kyu
Two Oldest Ages
37,968jhoffner
Completed Languages:
6 kyu
Count the divisible numbers
4,101joh_pot
Completed Languages:
8 kyu
Regexp Basics - is it a digit?
19,955taw
Completed Languages:
5 kyu
Least Common Multiple
4,543xcthulhu
Completed Languages:
5 kyu
Fibonacci Factory Function
1,316x-way
Completed Languages:
1 kyu
Regular Expression for Binary Numbers Divisible by n
1,429hufftheweevil
Completed Languages:
6 kyu
N-th Fibonacci
22,411boatmeme
Completed Languages:
6 kyu
first character that repeats
3,797jfridye
Completed Languages:
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