Watch 10 video solutions for Alternating Digit Sum, a easy level problem involving Math. This walkthrough by Bro Coders has 1,085 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
You are given a positive integer n. Each digit of n has a sign according to the following rules:
Return the sum of all digits with their corresponding sign.
Example 1:
Input: n = 521 Output: 4 Explanation: (+5) + (-2) + (+1) = 4.
Example 2:
Input: n = 111 Output: 1 Explanation: (+1) + (-1) + (+1) = 1.
Example 3:
Input: n = 886996 Output: 0 Explanation: (+8) + (-8) + (+6) + (-9) + (+9) + (-6) = 0.
Constraints:
1 <= n <= 109