Example 1:

Input: n = 234

Output: 15

Explanation:

Product of digits = 2 * 3 * 4 = 24

Sum of digits = 2 + 3 + 4 = 9

Result = 24 - 9 = 15

Example 2:

Input: n = 4421

Output: 21

Explanation:

Product of digits = 4 * 4 * 2 * 1 = 32

Sum of digits = 4 + 4 + 2 + 1 = 11

Result = 32 - 11 = 21

class Solution {

public static int subtractProductAndSum(int n) {

```
int number = n;
int remainder = 0,temp,sum=0, prod =1;
temp = number;
while(temp!=0){
remainder = temp %10;
sum = sum + remainder;
prod = prod * remainder;
temp = temp /10;
}
```

return prod - sum;

}

}