LeetCode Solution 1281 (crappy solution)

//1281. Subtract the Product and Sum of Digits of an Integer
// Link: https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/

import java.util.*;

class Solution {
    public int subtractProductAndSum(int n) {
        String number = Integer.toString(n);
        char[] digitsAsChar = number.toCharArray();
        int product = 1, sum = 0, difference = 0;
        ArrayList<Integer> digits = new ArrayList<>();
        for(char d: digitsAsChar){
            digits.add(Character.getNumericValue(d));
        }

        for(int d: digits){
            product *= d;
        }

        for(int d: digits){
            sum += d;
        }

        difference = product - sum;
        return difference;
    }
}