[SWEA][D2] 1288. 새로운 불면증 치료 Java

import java.util.Arrays;  
import java.util.Scanner;  
  
public class sleep {  
    public static void main(String[] args) {  
  
        Scanner sc = new Scanner(System.in);  
        int T;  
        T = sc.nextInt();  
        boolean[] result;  
  
  
        for (int test_case = 1; test_case <= T; test_case++) {  
            result = new boolean[10];  
  
            int startNum = sc.nextInt();  
            int num = 1;  
            int count = 0;  
            int resultNum = 0;  
  
            while (count < 10) {  
                resultNum = startNum * num;  
                String str = Integer.toString(resultNum);  
                for (int i = 0; i < str.length(); i++) {  
                    int number = Character.getNumericValue(str.charAt(i));  
                    if (!result[number]) {  
                        result[number] = true;  
                        count++;  
                    }  
                }  
                num++;  
            }  
  
            System.out.println("#" + test_case + " " + resultNum);  
  
  
        }  
    }  
}