We want to perform reversal of a stack, which mean reversing the contents of the stack and placing it on the same stack.
For example if Stack S contains 1 2 3, where 1 being on the top of the stack, then same stack after reversal will contain 3 2 1, where 3 being on the top of the stack. Which of the following statements is/are correct? Consider that system stack is not to be counted.
(i) This can be achieved using one queue.
(ii) We need one more stack for reversal of the stack.
(iii) We don’t need any extra stack.
(iv) We need at least two more stacks.
