Method push

src/class185/Code01_Wave1.java:52–58

(int u, int f, int t, int e)

	public static int stacksize;

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

	public static void pop() {
		--stacksize;