Method push

src/class194/Code04_Blockade1.java:53–59

(int u, int status, int fa, int e)

	public static int stacksize;

	public static void push(int u, int status, int fa, int e) {
		stack[stacksize][0] = u;
		stack[stacksize][1] = status;
		stack[stacksize][2] = fa;
		stack[stacksize][3] = e;
		stacksize++;
	}

	public static void pop() {
		stacksize--;