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
Solution(javascript)
/**
* @param {number} n
* @return {number}
*/
var subtractProductAndSum = function(n) {
n = n.toString();
let product = n[0];
let sum = n[0];
for (let i = 1; i < n.length; i++) {
product = Number(product * n[i]);
sum = Number(parseInt(sum) + parseInt(n[i]));
}
return Number(product - sum)
};