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  1. import re
  2.  
  3. def hasAlternate(str):
  4.     p = re.compile('(.).\\1')
  5.     m = p.search(str) is not None
  6.     return m
  7.  
  8. print(hasAlternate('4346789'))
  9. print(hasAlternate('4335667'))
  10.  
Success #stdin #stdout 0.03s 9572KB
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stdin
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Standard input is empty
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True
False
https://ideone.com/uAPBwn
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
secret

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