提取不重复的整数

import java.util.Scanner;

public class Main 
{
    private int cal(int number) {
        boolean[] marked = new boolean[10];
        int result = 0;
        while (number != 0) {
            if (!marked[number % 10]) {
                result = result * 10 + number % 10;
                marked[number % 10] = true;
            }
            number /= 10;
        }
        return result;
    }

    public Main() 
    {
        Scanner in = new Scanner(System.in);
        while (in.hasNextInt()) 
        {
            int number = in.nextInt();
            int result = cal(number);
            System.out.println(result);
        }
    }

    public static void main(String[] args) 
    {
        Main solution = new Main();
    }
}