A crack at the Luhn algorithm (https://en.wikipedia.org/wiki/Luhn_algorithm)
jamescraft34/Luhn_test
A crack at the Luhn algorithm (https://en.wikipedia.org/wiki/Luhn_algorithm)
Ruby
A crack at the Luhn algorithm (https://en.wikipedia.org/wiki/Luhn_algorithm)
Ruby
A crack at the Luhn algorithm (https://en.wikipedia.org/wiki/Luhn_algorithm)