[LeetCode] 1281. Subtract the Product and Sum of Digits of an Integer (Java)

https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/

Solution

class Solution {
    static int subtractProductAndSum(int n) {
        int answer = 0;

        String nStr = String.valueOf(n);
        int productDigits = 1;
        int sumDigits = 0;
        // 1. Product of digits
        for (int i = 0; i < nStr.length(); i++) {
            productDigits *= Character.getNumericValue(nStr.charAt(i));
        }

        // 2. Sum of digits
        for (int i = 0; i < nStr.length(); i++) {
            sumDigits += Character.getNumericValue(nStr.charAt(i));
        }

        answer = productDigits - sumDigits;
        return answer;
    }

    public static void main(String[] args) {
        System.out.println(subtractProductAndSum(234));
        System.out.print(subtractProductAndSum(4421));
    }
}