Can you write a swap routine in Java, or in any other language with only call-by-sharing parameters? What exactly should swap do in such a language? (Hint: Think about the distinction between the...

Can you write a swap routine in Java, or in any other language with only

call-by-sharing parameters? What exactly should swap do in such a language? (Hint: Think about the distinction between the object to which a

variable refers and the value [contents] of that object.)