LeetCode-in-Java
1281. Subtract the Product and Sum of Digits of an Integer
Easy
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
public class Solution {
public int subtractProductAndSum(int n) {
int product = 1;
int sum = 0;
while (n != 0) {
int digit = n % 10;
product = product * digit;
sum = sum + digit;
n /= 10;
}
return product - sum;
}
}