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  1. #!/usr/bin/perl
  2. use 5.016;
  3. use warnings;
  4.  
  5. sub chunk {
  6. 	my $n = shift;
  7.  
  8. 	my @l;
  9. 	foreach(0 .. $#_){
  10. 		push @{$l[$_ / $n]}, $_[$_];
  11. 	}
  12.  
  13. 	return @l;
  14. }
  15.  
  16. sub len { length($_[0]) > 1 ? length($_[0]) : '' }
  17.  
  18. sub f { map{ $_->[1] . len($_->[0]) } chunk(2, shift =~ m/\G((.)\2*)/g) }
  19.  
  20. say f("aaaaaaaaaabbbbbbbbbbbbcccccccddddddddddeeeeeeefffffffffghiiiiiiiii");
  21.  
Success #stdin #stdout 0s 3692KB
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a10b12c7d10e7f9ghi9
https://ideone.com/nftddV
language:
Perl (perl 5.28.1)
created:
10 years ago
visibility:
public

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