#104

Write Roman Numerals

 

This is the inverse of Problem 92, but much easier. Given an integer smaller than 4000, return the corresponding roman numeral in uppercase, adhering to the subtractive principle.

	(= "I" (__ 1))
	(= "I" (__ 1))
	(= "XXX" (__ 30))
	(= "IV" (__ 4))
	(= "CXL" (__ 140))
	(= "DCCCXXVII" (__ 827))
	(= "MMMCMXCIX" (__ 3999))
	(= "XLVIII" (__ 48))