Method pop

java/Chapter 3/Question3_1/QuestionB.java:104–114

(int stackNum)

	}

	static int pop(int stackNum) throws Exception {
		StackData stack = stacks[stackNum];		
		if (stack.size == 0) {
			throw new Exception("Trying to pop an empty stack.");
		}
		int value = buffer[stack.pointer];
		buffer[stack.pointer] = 0;
		stack.pointer = previousElement(stack.pointer);
		stack.size--;
		return value;
	}

	static int peek(int stackNum) {
		StackData stack = stacks[stackNum];