MultiplicationAndSumofDigits_v_0.0.1.js

**
 * @param {number} n
 * @return {number}
 */
var subtractProductAndSum = function(n) {
  let strNum = n.toString();
  let arr = strNum.split("");
  let mul = 1, count = 0;
  for (let i = 0; i < arr.length; i++) {
    mul *= arr[i];
  }
  for (let j = 0; j < arr.length; j++) {
     count += parseInt(arr[j]);
  }
  return mul - count;
};

Subtract the Product and Sum of Digits of an Integer