my @array1 = ('a','b','c','d');
my @array2 = (1,2,3,4);
my @array3 = ('x','y','z');
my @array4 = ('p','q','r','s','t','u');
my @array5 = ('l','m','n');

my @finalArray;

looping(\@array1,\@array2,\@array3,\@array4,\@array5);

sub looping
{
	while (@_)
	{
		my $array = shift;
		my $length = scalar @{$array} - 1;
		for my $i (0 .. $length)
		{
			exists $finalArray[$i] ? ($finalArray[$i] = $finalArray[$i].${$array}[$i]) : ($finalArray[$i] = ${$array}[$i]);
		}
	}
} 

print "$_\n" foreach(@finalArray);