Suggest some suitable code for it.

I downvoted this node for two reasons: 1. Your question wasn't clear (What are you trying to do?) and 2. Your post showed no effort (What have you tried?).

If you're trying to generation @array from @array1, then

@array = map { "INVITE:$_" } @array1;
[download]

would do the trick (although I have not tested it).

But really, it's hard to tell, based on how vaguely your post was worded.