subtractProductAndSum

class Solution {
    public int subtractProductAndSum(int n) {
        int sum = 0;
        int product = 1; int rem;
        int m =n;
        while(n>0){
            rem = n%10;
            sum = sum + rem;
            n = n/10;
        }
        while(m>0){
            rem = m%10;
            product = product * rem;
            m = m/10;
        }
      return product - sum;  
    }
}