Generate your own valid Canadian Medical Services Plan number.

msp_number_generator.rb

def valid_msp_number(msp_number)
    weights = [0, 2, 4, 8, 5, 10, 9, 7, 3, 0]
    total = 0
    weights.to_enum.with_index(1).each do |weight, i|
      total = total + msp_number[i-1].to_i * weight.to_i
    end
    a = total / 11
    b = a * 11
    c = total - b
    result = 11 - c
    if msp_number[-1].to_i != result
      puts "not valid"
    end

end

15.times do

  weights = [2, 4, 8, 5, 10, 9, 7, 3]
  int0 = 9;
  random_numbers = Array.new
  total = 0
  weights.each do |i|
    random_numbers << rand(9)
    calculated = i * random_numbers.last
    total += calculated
  end


  a = total / 11
  b = a * 11
  c = total - b
  result = 11 - c
  num = '9' + random_numbers.join + result.to_s

  if num.length == 10
    puts num
  end

end