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  1. my $str = "az(se)(dc(fr(lo)))(km(ji)(hn))(()aaa(()())(ff(dd)aa))";
  2. my @arr = $str =~ /\(((?:[^()]++|\((?1)\))*+)\)/g;
  3. print join("\n", @arr)
Success #stdin #stdout 0s 3564KB
comments (?)
stdin 
Standard input is empty
stdout 
se
dc(fr(lo))
km(ji)(hn)
()aaa(()())(ff(dd)aa)
https://ideone.com/4PN6um
language:
Perl (perl 5.28.1)
created:
12 years ago
visibility:
public

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