ruby.rb

#!/usr/bin/ruby -w                                                                 

def twos_compliment(integer)
  if integer > 0
    return "0" + integer.to_s(2) 
  else
    integer = ~integer + 1                                                         
    return integer.to_s(2)
  end
end

arr = [1, -2, 3, -4, -3, 2]
arr.each { | item |
  printf("%s %s %s \n", item.to_s(10), item.to_s(2), twos_compliment(item))        
}