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

Group(), Groups() & Groupdict()

  • ericstricker73
     + 0 comments
    import re
pattern = r'([A-Za-z0-9])\1+'
l = re.findall(pattern , input().strip())
print( l[0] if len(l) != 0 else -1)