1281. Subtract the Product and Sum of Digits of an Integer

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

Description

Given an integer number n, return the difference between the product of its digits and the sum of its digits. 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

Constraints:

• 1 <= n <= 10^5

ac