[LANG][COLLECTIONS] Require a static function to swap 2 elements in a array (primitive as well non-primitive)

[venkatesha murthy]

Hi All

I was looking to ArrayUtils(version 3.4) to hopefully find a swap method .
Is this some thing available else where or can i implement one. please
suggest.

Also i am not sure which commons lib this can be placed with. please let
know about that as well.

thanks
venkat.