public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); // 创建Scanner对象 System.out.print("剪刀为1,石头为2,布为3:"); // 打印提示 var choice = scanner.nextInt(); Random rd = new Random(); var rand_num = rd.nextInt(1, 4); String opt = switch (choice) { case 1 -> rand_num == 1 ? "平局" : (rand_num == 2 ? "输" : "胜"); case 2 -> rand_num == 2 ? "平局" : (rand_num == 3 ? "输" : "胜"); case 3 -> rand_num == 3 ? "平局" : (rand_num == 1 ? "输" : "胜"); default -> "输入异常"; }; System.out.println("结果" + opt); }}
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