2413. Smallest Even Multiple

Problem Statement

Given a positive integer n, return the smallest positive integer that is a multiple of both2 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

Click to open Hints

A guaranteed way to find a multiple of 2 and n is to multiply them together. When is this the answer, and when is there a smaller answer?
There is a smaller answer when n is even.

Solution:

Rust

impl Solution {
    pub fn smallest_even_multiple(n: i32) -> i32 {
        if n % 2 == 0 {
            return n;
        } else {
            return n * 2;
        }
    }
}

2413. Smallest Even Multiple #

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2413. Smallest Even Multiple

Problem Statement

Solution:

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