【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;
    }
    
    
}