Method push

java/Chapter 3/Question3_3/SetOfStacks.java:20–29

(int v)

	}
	
	public void push(int v) {
		Stack last = getLastStack();
		if (last != null && !last.isFull()) { // add to last
			last.push(v);
		} else { // must create new stack
			Stack stack = new Stack(capacity);
			stack.push(v);
			stacks.add(stack);
		}
	}
	
	public int pop() {
		Stack last = getLastStack();