Method push

src/class185/Code06_ChengDu1.java:64–71

(int u, int f, int nl, int nr, int e)

	public static int stacksize;

	public static void push(int u, int f, int nl, int nr, int e) {
		stack[stacksize][0] = u;
		stack[stacksize][1] = f;
		stack[stacksize][2] = nl;
		stack[stacksize][3] = nr;
		stack[stacksize][4] = e;
		stacksize++;
	}

	public static void pop() {
		--stacksize;