Group(), Groups() & Groupdict() solved

This Python script is designed to solve a problem of finding the first occurrence of an alphanumeric character that repeats in a given string. The script uses regular expressions, a powerful tool for string manipulation and parsing, to identify repeating characters.

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Here is the Group(), Groups() & Groupdict() solved HackerRank solution using CodeRankGPT:

The script works by taking an input string and using a regular expression to search for the first occurrence of any alphanumeric character that repeats. The regular expression used, '([A-Za-z0-9])\1', matches any alphanumeric character followed by the same character. If such a match is found, the script prints the character. If no match is found, the script prints -1.


import re

s = input()
res = re.search(r"([A-Za-z0-9])\1", s)
if res is None:
    print(-1)
else:
    print(res[1])

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