题解 | #提取不重复的整数#

数组判断是否重复

import java.util.*;
public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[10];
        int sum = 0;
        while(n>0){
            if(array[n%10] != 1){
                sum = sum*10 + n%10;
                array[n%10] = 1;
            }
            n=n/10;
        }
        System.out.println(sum);
    }
}