```
public class Solution
extends Object
```
1952 - Three Divisors\. Easy Given an integer `n`, return `true` _if_ `n` _has **exactly three positive divisors**. Otherwise, return_ `false`. An integer `m` is a **divisor** of `n` if there exists an integer `k` such that `n = k * m`. **Example 1:** **Input:** n = 2 **Output:** false **Explantion:** 2 has only two divisors: 1 and 2. **Example 2:** **Input:** n = 4 **Output:** true **Explantion:** 4 has three divisors: 1, 2, and 4. **Constraints:** * 1 <= n <= 10⁴

Class Solution