#104
Write Roman Numerals
 

Difficulty:Medium
Topics:strings math


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


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