#!/usr/bin/ruby # # See https://theweeklychallenge.org/blog/perl-weekly-challenge-153 # # # Run as: ruby ch-2.rb < input-file # fac = [] fac [0] = 1 for n in 1 .. 9 do fac [n] = n * fac [n - 1] end ARGF . each_line do |num| num = num . to_i sum = 0 n = num while n > 0 do sum += fac[n % 10] n /= 10 end if sum == num then puts (1) else puts (0) end end