gistfile1.txt

#!/usr/bin/env ruby

class CashMachine
  available_cash = [100, 50, 20, 10]
  banknotes = {};

  print "What value you whish take out? "
  value = gets.chomp
  value = value.to_i

  (0..available_cash.length).each do |cash|
    break if cash == 4
    count = 0

    if available_cash[cash] <= value
      count = count + 1
      banknotes[available_cash[cash]] = count
      value -= available_cash[cash]
    end
  end

  banknotes.each {|k, v|
    p  "Entregue #{v} de #{k}"
  }
end

class CashMachine
  attr_reader :available_cash, :banknotes

  def initialize
    @available_cash = [100, 50, 20, 10]
    @banknotes = {};
  end

  def calculate_change(amount)
    available_cash.each_with_index do |index, cash|
      count = 0

      if available_cash[cash] <= amount
        count = count + 1
        banknotes[available_cash[cash]] = count
        amount -= available_cash[cash]
      end
    end
  end
end

print "What value you whish take out? "
value = gets.chomp
value = value.to_i

cash_machine = CashMachine.new
cash_machine.calculate_change(value)

cash_machine.banknotes.each {|k, v|
  p  "Delivered #{v} of #{k}"
}