Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/takeshiToolv1.rb

Instance Method Summary collapse

Instance Method Details

#isTwID? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/takeshiToolv1.rb', line 10

def isTwID?
  a_to_n = (10..17).to_a
  a_to_n.push 34
  a_to_n += (18..22).to_a
  a_to_n.push 35
  a_to_n += (23..29).to_a
  a_to_n.push 32
  a_to_n += (30..31).to_a
  a_to_n.push 33

  place_n = a_to_n[self[0].ord-'A'.ord]
  
  sum = 0
  sum += place_n/10 + (place_n%10)*9
  tmp = 8
  
  1.upto(8) do |i|
  	sum += (self[i].ord - '0'.ord)*tmp
  	tmp -= 1
  end

  sum += (self[9].ord - '0'.ord)
  sum%10 == 0
end