Class: CPF::VerifierDigit

Inherits:
Object
  • Object
show all
Defined in:
lib/cpf/verifier_digit.rb

Class Method Summary collapse

Class Method Details

.generate(numbers) ⇒ Object 



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# File 'lib/cpf/verifier_digit.rb', line 3

def self.generate(numbers)
  modulus = numbers.size + 1

  multiplied = numbers.map.with_index do |number, index|
    number * (modulus - index)
  end

  mod = multiplied.reduce(:+) % 11
  mod < 2 ? 0 : 11 - mod
end