Practice>Python>Regex and Parsing>Group(), Groups() & Groupdict()

hackerrank.com

Group(), Groups() & Groupdict()

Problem Link : https://www.hackerrank.com/challenges/re-group-groups/problem

Difficulty : Easy

Tip

• a-zA-Z0-9
• this to capture both alphabet and number

Solution

import re m = re.search(r'([a-zA-Z0-9])\1+', input().strip()) print(m.groups()[0] if m else -1)