if writing your stack horizontally, put the bottom on the left and the top on the right.

Question 1: Tracing Stacks

Show the contents of two initially empty stacks after each statement below executes. Assume a, b, c, and d are objects.

stack1.push(a);

stack2.push(b);

stack1.push(c);

stack2.push(d);

stack1.push(stack2.pop());

stack2.push(e);

stack2.push(stack2.peek());

stack2.push(stack2.pop());

stack1.push(stack2.peek());

stack1.pop();

stack2.pop();