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Smallest Even Multiple

Leetcode

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.

Solution 1

Solution 1

public int smallestEvenMultiple(int n) {
  return n % 2 == 0 ? n : n * 2;
}