prob052.rb

#!/usr/bin/env ruby1.9

# Project Euler, Problem 52
#
# It can be seen that the number 125874, and its double, 251748, contain
# exactly the same digits, but in a different order.
#
# Find the smallest positive integer x such that 2x, 3x, 4x, 5x, and 6x
# contain the same digits.
#
# Lawrence Velazquez

class Integer
  def same_digits?(n)
    self.to_s.split(//).sort == n.to_s.split(//).sort
  end
end

n = 1
n = n.next until (Array.new(5) {|i| n * (i + 2)}).all? {|x| x.same_digits?(n)}
puts n