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Java-based LeetCode algorithm problem solutions, regularly updated

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2413\. Smallest Even Multiple

Easy

Given a **positive** integer `n`, return _the smallest positive integer that is a multiple of **both**_ `2` _and_ `n`.

**Example 1:**

**Input:** n = 5

**Output:** 10

**Explanation:** The smallest multiple of both 5 and 2 is 10. 

**Example 2:**

**Input:** n = 6

**Output:** 6

**Explanation:** The smallest multiple of both 6 and 2 is 6. Note that a number is a multiple of itself. 

**Constraints:**

*   `1 <= n <= 150`