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Re: compare two strings and return only he unique values.

by LanX (Saint)
on Feb 03, 2013 at 22:44 UTC ( [id://1016873]=note: print w/replies, xml ) Need Help??

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  1. or download this
      DB<111> @a1=split//,$str1
 => ("A", "B", "C", "D", "E")
...

  DB<117> (keys %h1, keys %h2)
 => ("A", "O")
  2. or download this
      DB<137> $h{$_}++ for (split//,$str1),(split//,$str2)
 => ""
...

  DB<139> grep {$h{$_}==1} keys %h
 => ("A", "O")
  3. or download this
      DB<146> grep {$h{$_}==1} map {$h{$_}++;$_} split//,$str1.$str2
 => ("A", "O")

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