List::Compare will also solve this problem. 
#!/usr/bin/perl
use strict;
use warnings;
use 5.014;
use List::Compare;

my @winners=("ruth","sheila");
my @correct=("ruth","martin","dee","zack");

my $lc = List::Compare->new(\@winners, \@correct);

my @composite = $lc->get_Ronly;

print "@composite\n";

[download]
Prints
dee martin zack

Chris

In reply to Re: removing a sublist by Cristoforo
in thread removing a sublist by Aldebaran

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