#!/usr/bin/ruby # # See ../README.md # # # Run as: ruby ch-2.rb < input-file # ARGF . each_line do | line | a, b = line . strip() . split("/") . map {|x| x . to_i} for i in 1 .. 2 do if a < b then b -= a else a -= b end if a == 0 || b == 0 then next end print a, "/", b, " " end puts ("") end