Although not as nicely readable as Riales's solution, here's another option:

map{$setB{$_}++}@listB;
@listC = grep{!$setB{$_}}@listA;

[download]

Hope this helps!

In reply to Re: comparing lists and getting an exemtion report by Kenosis
in thread comparing lists and getting an exemtion report by Saadat.123

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