Method pushAtBottom

13_Stacks/Question3.java:5–14

(Stack<Integer> s, int data)

public class Question3 {
    public static void pushAtBottom(Stack<Integer> s, int data) {
        if(s.isEmpty()) {
            s.push(data);
            return;
        }

        int temp = s.pop();
        pushAtBottom(s, data);
        s.push(temp);
    }

    public static void reverse(Stack<Integer> s) {
        if(s.isEmpty()) {