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  1. Prepare
  2. Regex
  3. Backreferences
  4. Backreferences To Failed Groups
  5. Discussions

Backreferences To Failed Groups

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182 Discussions

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  • arohi_agrawal111
     + 0 comments
    Regex_Pattern = r'^\d{2}(-?)\d{2}\1\d{2}\1\d{2}$'

import re

print(str(bool(re.search(Regex_Pattern, input()))).lower())

  • vedagaonkar999
     + 0 comments

    Regex_Pattern = r"^(\d{2})(-?)(\d{2})\2(\d{2})\2(\d{2})$" # Do not delete 'r'.

  • trupti29
     + 0 comments

    Regex_Pattern = r"\d{8}|^(\d{2}-){3}\d{2}$" # Do not delete 'r'.

  • FatmaEmilie
     + 0 comments

    To avoid complications when working with regular expressions, it's essential to ensure that backreferences are used only when their corresponding groups are successfully matched. www fairplay24.in

  • h150473
     + 0 comments

    For javascript - var Regex_Pattern = /\d{8}|^(\d{2}-){3}\d{2}$/;