Package g2501_2600.s2544_alternating_digit_sum

Class Solution

java.lang.Object

g2501_2600.s2544_alternating_digit_sum.Solution

public class Solution
extends Object

2544 - Alternating Digit Sum.<p>Easy</p> <p>You are given a positive integer <code>n</code>. Each digit of <code>n</code> has a sign according to the following rules:</p> <ul> <li>The <strong>most significant digit</strong> is assigned a <strong>positive</strong> sign.</li> <li>Each other digit has an opposite sign to its adjacent digits.</li> </ul> <p>Return <em>the sum of all digits with their corresponding sign</em>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> n = 521</p> <p><strong>Output:</strong> 4</p> <p><strong>Explanation:</strong> (+5) + (-2) + (+1) = 4.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> n = 111</p> <p><strong>Output:</strong> 1</p> <p><strong>Explanation:</strong> (+1) + (-1) + (+1) = 1.</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> n = 886996</p> <p><strong>Output:</strong> 0</p> <p><strong>Explanation:</strong> (+8) + (-8) + (+6) + (-9) + (+9) + (-6) = 0.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= n <= 10⁹</code></li> </ul>

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)