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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Group(), Groups() & Groupdict()
  5. Discussions

Group(), Groups() & Groupdict()

  • babafun
     + 0 comments
    import re
print((m := re.search(r"([a-zA-Z0-9])\1", input())) and m.group(1) or -1)