You are given a string, and you have to validate whether it’s a valid Roman numeral. If it is valid, print True. Otherwise, print False. Try to create a regular expression for a valid Roman numeral.
Input Format :
A single line of input containing a string of Roman characters.
Output Format :
Output a single line containing True or False according to the instructions above.
Constraints :
The number will be between 1 and 3999(both included).
Sample Input :
CDXXI
Sample Output :
True
References :
Regular expressions are a key concept in any programming language. A quick explanation with Python examples is available here. You could also go through the link below to read more about regular expressions in Python.
https://developers.google.com/edu/python/regular-expressions
Validating Roman Numerals in Python – HackerRank Solution
thousand = 'M{0,3}'
hundred = '(C[MD]|D?C{0,3})'
ten = '(X[CL]|L?X{0,3})'
digit = '(I[VX]|V?I{0,3})'
regex_pattern = r"%s%s%s%s$" % (thousand, hundred, ten, digit)
# Do not delete 'r'.
# Validating Roman Numerals in Python - Hacker Rank Solution END
import re
print(str(bool(re.match(regex_pattern, input()))))Disclaimer: The above Problem (Validating Roman Numerals in Python – HackerRank Solution) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.
