the code:
def repeatingDigits(digits): pattern = set(digits.lstrip("0")) print(pattern)
if len(pattern) > 1:
return(False)
if len(pattern) == 1:
return(True)
repeatingDigits("0111") ''TRUE'' repeatingDigits("0112") ''FALSE''
Use the regex: ^0*([1-9])\1*$
Explanation:
^
: begin searching at start of string 0*
: search for any repeated 0's ([1-9])
: match digits other than 0 and remember it \1*
: match one or more instances of the previously matched digit $
: end of string The anchor tokens ^ and $ allow weeding out multiple occurrence of recurring digits. Python code:
import re
def repeatingDigits(digits):
pattern = r"^0*([1-9])\1*$"
return re.search(pattern, digits)
the code:
def repeatingDigits(digits): pattern = set(digits.lstrip("0")) print(pattern)
if len(pattern) > 1:
return(False)
if len(pattern) == 1:
return(True)
repeatingDigits("0111") ''TRUE'' repeatingDigits("0112") ''FALSE''
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.