Package g2501_2600.s2544_alternating_digit_sum

Class Solution

java.lang.Object
g2501_2600.s2544_alternating_digit_sum.Solution
public class Solution extends java.lang.Object
2544 - Alternating Digit Sum.

Easy

You are given a positive integer n. Each digit of n has a sign according to the following rules:

  • The most significant digit is assigned a positive sign.
  • Each other digit has an opposite sign to its adjacent digits.

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

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    alternateDigitSum(int n)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • alternateDigitSum

      public int alternateDigitSum(int n)