System.out.println("石头剪刀布游戏");System.out.println("1.石头");System.out.println("2.剪刀");System.out.println("3.布");System.out.print("请选择你要出的招数：");Scanner scanner = new Scanner(System.in);int choose = scanner.nextInt();int random = 1 + (int) (Math.random() * 3);switch (choose) {    case 1:        System.out.println("你出的是石头");        if (random == 1) {            System.out.println("PC出石头，平局");            break;        } else if (random == 2) {            System.out.println("PC出剪刀，你赢了");            break;        } else {            System.out.println("PC出布，你输了");            break;        }    case 2:        System.out.println("你出的是剪刀");        if (random == 1) {            System.out.println("PC出石头，你输了");            break;        } else if (random == 2) {            System.out.println("PC出剪刀，平局");            break;        } else {            System.out.println("PC出布，你赢了");            break;        }    case 3:        System.out.println("你出的是布");        if (random == 1) {            System.out.println("PC出石头，你赢了");            break;        } else if (random == 2) {            System.out.println("PC出剪刀，你输了");            break;        } else {            System.out.println("PC出布，平局");            break;