use strict;
use List::MoreUtils qw/uniq/;
use Data::Dumper;

my @x = (3,2);
my @y = (4,3);

print "unique results \n";
print Dumper([uniq(@x,@y)]);

print "sorted unique results\n";
print Dumper([sort uniq(@x,@y)]);

##</code><code>##

unique results 
$VAR1 = [
          3,
          2,
          4
        ];
sorted unique results
$VAR1 = [
          2,
          3,
          3,
          4
        ];