import java.util.*; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int i = scanner.nextInt(); String s = String.valueOf(i); String[] split = s.split("");//拆分输入整数字符串 HashMap<Integer, String> ...