Created
October 23, 2020 16:49
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Find out if a number is prime with regex
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| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| """ | |
| Created on Fri Oct 23 17:34:25 2020 | |
| @author: hemerson.tacon | |
| """ | |
| import re | |
| def is_prime(n): | |
| return re.match(r"^1?$|^(11+?)\1+$", "1"*n) == None |
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Reference and explanation: https://itnext.io/a-wild-way-to-check-if-a-number-is-prime-using-a-regular-expression-4edfb725f895