题解 | #提取不重复的整数#

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);
        LinkedHashSet<Integer> set = new LinkedHashSet<>();

        int count = scanner.nextInt();
        while (count>0){
            int a=count%10;
            set.add(a);
            count=count/10;
        }
        for (Integer interger:
             set) {
            System.out.print(interger);

        }
    }
}