: Let S1 and S2 be two stacks. 1. It is possible to keep two stacks in a single array, if one grows from position 1 of the array, and the other grows from the last position? 2. Write a procedure...

: Let S1 and S2 be two stacks. 1. It is possible to keep two stacks in a single
array, if one grows from position 1 of the array, and the other grows from the last position? 2.
Write a procedure Push(x, S) that pushes element x onto stack S, where S is one or the other of
these two stacks. Include all necessary error checks in your procedure.