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Matching 'tic' and 'tac' with specific conditions

python

Expression Régulière

^(tac|tictac)+(tac){2,}tictac(tac|tac|^)
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Explication

This regex pattern matches strings that consist of 'tic' or 'tac' with the following conditions: 1. 'tic' should not be the immediate neighbor of itself, 2. The first occurrence of 'tic' must only happen after 'tac' has appeared at least twice before.

python

Exemple d'Utilisation

import re

test_string = 'tactactictactac'
regex_pattern = r'^(tac|tictac)+(tac){2,}tictac(tac|tac|^)'
matches = re.fullmatch(regex_pattern, test_string)
if matches:
    print('String matches the pattern')
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