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  1. $/ = undef;
  2. my $input = <main::DATA>;
  3. my $d = 0;
  4.  
  5. $_ = $input;
  6. s/\s(\d+)\/(\d+)\/(\d{4})\s/{$d = 10000*$3+100*$1+$2 if $d < 10000*$3+100*$1+$2}/eg;
  7.  
  8. print $d;
  9.  
  10. __DATA__
  11. 2024.01.03
  12. 2023.01.04
  13. 2024.05.06
  14. 2020.10.01
Success #stdin #stdout 0.01s 5280KB
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Standard input is empty
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Standard output is empty
https://ideone.com/KDH5VW
language:
Perl (perl 5.28.1)
created:
11 days ago
visibility:
public

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