题解 | #提取不重复的整数#

import java.util.Scanner;

// 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 sc = new Scanner(System.in);
        int number = sc.nextInt();
        int[] n = new int[10];
        while (number != 0){
            int temp = number % 10;
            if(n[temp] != 1){
                n[temp] = 1;
                System.out.print(temp);
            }
            number /= 10;
        }

    }
}