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  1. map { /(.+)_(U|L)5$/ and ($h{$1} and $h{$1} ne $2 and print $1 or $h{$1} = $2) } <DATA>
  2.  
  3. __DATA__
  4. aaa_xxx_U5
  5. aaa_xxx_L5
  6. aaa_yyy_L5
  7. aaa_zzz_U5
Success #stdin #stdout 0s 3608KB
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aaa_xxx
https://ideone.com/tsxlHx
language:
Perl (perl 5.28.1)
created:
12 years ago
visibility:
public

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