Validating Roman Numerals HackerRank Problem

This Python program is designed to validate Roman numerals. It takes a string as input and checks if it matches the pattern of a Roman numeral. Roman numerals are a numeral system originating from ancient Rome, and this program uses regular expressions to validate them.

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Here is the Validating Roman Numerals HackerRank Problem HackerRank solution using CodeRankGPT:

The solution works by defining a regular expression pattern that matches the structure of Roman numerals. The pattern checks for the presence and order of specific Roman numeral characters (M, D, C, L, X, V, I) in the input string. The 're.match' function is used to check if the input string matches the defined pattern. If the input string matches the pattern, the function returns True, indicating that the string is a valid Roman numeral. Otherwise, it returns False.


import re

regex_pattern = r"^M{0,3}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$"
print(bool(re.match(regex_pattern, input())))

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Here is the Validating Roman Numerals HackerRank Problem HackerRank solution using CodeRankGPT:

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