09 Sept 2026•Easy•Go / Python / TypeScript

Subtract the Product and Sum of Digits of an Integer

Subtract the sum of an integer's digits from the product of its digits.

Extract decimal digits one at a time, accumulating their product and sum, then return the difference.

Complexity

O(log n) time and O(1) space.

Solution files

Go•subtract-the-product-and-sum-of-digits-of-an-integer/solution.go

package main

func subtractProductAndSum(n int) int {
	product, sum := 1, 0
	for n > 0 {
		digit := n % 10
		product *= digit
		sum += digit
		n /= 10
	}
	return product - sum
}

Python•subtract-the-product-and-sum-of-digits-of-an-integer/solution.py

class Solution:
    def subtractProductAndSum(self, n: int) -> int:
        product, total = 1, 0
        while n:
            n, digit = divmod(n, 10); product *= digit; total += digit
        return product - total

TypeScript•subtract-the-product-and-sum-of-digits-of-an-integer/solution.ts

function subtractProductAndSum(n: number): number {
  let product = 1; let sum = 0;
  while (n > 0) { const digit = n % 10; product *= digit; sum += digit; n = Math.floor(n / 10); }
  return product - sum;
}