【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.

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;
}

}