Re: Clubbing array elements together:

[choroba]

You can profit from the input record separator $/:

$/ = q();
while (<>) {
    s/\n//g;
    print "$_\n";
}

[;-)]

How do you wanna apply this on arrays?

Though, I think you have the right idea, the array will most likely originate from a file-read.

So it's obviously a XY Problem and should be solved directly.