gistfile1.txt

class Integer
  @@roman_numerals = {
    1000 => "M",  
     900 => "CM",  
     500 => "D",  
     400 => "CD",
     100 => "C",  
      90 => "XC",  
      50 => "L",  
      40 => "XL",  
      10 => "X",  
        9 => "IX",  
        5 => "V",  
        4 => "IV",  
        1 => "I",  
  }


  def to_roman
    roman = ""
    arabic = self
    @@roman_numerals.each do |arabic_key, roman_value|
      roman << roman_value * (arabic / arabic_key)
      arabic = arabic % arabic_key
    end
    roman 
  end
end