Group(), Groups() & Groupdict() HackerRank Solution In Python

Problem

_group()

A group() expression returns one or more subgroups of the match.

Code

>>> import re>>> m = re.match(r'(\w+)@(\w+)\.(\w+)','username@hackerrank.com')>>> m.group(0)       # The entire match 'username@hackerrank.com'>>> m.group(1)       # The first parenthesized subgroup.'username'>>> m.group(2)       # The second parenthesized subgroup.'hackerrank'>>> m.group(3)       # The third parenthesized subgroup.'com'>>> m.group(1,2,3)   # Multiple arguments give us a tuple.('username', 'hackerrank', 'com')

_groups()

A groups() expression returns a tuple containing all the subgroups of the match.

Code

>>> import re>>> m = re.match(r'(\w+)@(\w+)\.(\w+)','username@hackerrank.com')>>> m.groups()('username', 'hackerrank', 'com')

_groupdict()

A groupdict() expression returns a dictionary containing all the named subgroups of the match, keyed by the subgroup name.

Code

>>> m = re.match(r'(?P<user>\w+)@(?P<website>\w+)\.(?P<extension>\w+)','myname@hackerrank.com')>>> m.groupdict(){'website': 'hackerrank', 'user': 'myname', 'extension': 'com'}

Task

You are given a string S.
Your task is to find the first occurrence of an alphanumeric character in S (read from left to right) that has consecutive repetitions.

Input Format

A single line of input containing the string S.

Constraints

0 < len(S) < 100

Output Format

Print the first occurrence of the repeating character. If there are no repeating characters, print -1.

Sample Output

..12345678910111213141516171820212223

Sample Output

1

Explanation

.. is the first repeating character, but it is not alphanumeric.
1 is the first (from left to right) alphanumeric repeating character of the string in the substring 111.

Solution – Group(), Groups() & Groupdict() In Python | HackerRank

regex_pattern = r"[.,]"	# Do not delete 'r'.import reprint("\n".join(re.split(regex_pattern, input())))