【HackerRank】 Find Digits

Find Digits

Problem Statement

Given a number you have to print how many digits in that number exactly divides that number.

Input format

The first line contains T (number of test cases followed by t lines each containing n

Constraints
1 <=T <= 15
0 < N < 10¹⁰

Output Format
Number of digits in that number exactly divides that number.

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题解：

 import java.io.*;
 import java.util.*;

 public class Solution {

     public static void main(String[] args) {
         Scanner in = new Scanner(System.in);
         int t = in.nextInt();
         for(int i = 0; i < t; i++){
             Long num = in.nextLong();
             System.out.println(FindDigits(num));
         }
     }

     private static int FindDigits(Long num){

          //Write code to solve each of the test over here
          Long copy_num = num;
          int count = 0;
          while(num>0){
              Long digit = num%10;
              if(digit!=0 && copy_num%digit==0)
                  count++;
              num /= 10;
          }
          return count;
     }

 }