public void showStack3 () {
		System.out.println ("STACK 0");
		System.out.println ("====bottom====");
		for (int i=0; i<size[0]; ++i) {
			System.out.println (data[i]);
		}
		System.out.println ("====top====");
		
		System.out.println ("STACK 1");
		System.out.println ("====bottom====");
		for (int i=0; i<size[1]; ++i) {
			System.out.println (data[MAX_SIZE + i]);
		}
		System.out.println ("====top====");
		
		System.out.println ("STACK 2");
		System.out.println ("====bottom====");
		for (int i=0; i<size[2]; ++i) {
			System.out.println (data[MAX_SIZE*2 + i]);
		}
		System.out.println ("====top====");
		
	}