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  1. #!/usr/bin/perl
  2.  
  3. my @list = qw(A1.txt A10.txt Hello225.txt);
  4. for (@list) {
  5.   s/\d+/sprintf("%05d", $&)/e;
  6.   print $_ . $/;
  7. }
Success #stdin #stdout 0s 6044KB
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stdin
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Standard input is empty
stdout
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A00001.txt
A00010.txt
Hello00225.txt
https://ideone.com/OnvtIX
language:
Perl (perl 5.28.1)
created:
8 years ago
visibility:
public

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