From: Giampiero Zanchi <cidza@...>
Date: 2012-02-07T17:27:54+09:00
Subject: Re: Easy loop question

print "Give me an integer number: "
num = gets.to_i # read in a number
while num != 1
  num = num % 2 == 0 ? num / 2 : num * 3 + 1
  puts num # print it
  sleep 1 # wait one second
end

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