Package g0501_0600.s0507_perfect_number
Class Solution
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- g0501_0600.s0507_perfect_number.Solution
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public class Solution extends Object
507 - Perfect Number\. Easy A [**perfect number** ](https://en.wikipedia.org/wiki/Perfect_number) is a **positive integer** that is equal to the sum of its **positive divisors** , excluding the number itself. A **divisor** of an integer `x` is an integer that can divide `x` evenly. Given an integer `n`, return `true` _if_ `n` _is a perfect number, otherwise return_ `false`. **Example 1:** **Input:** num = 28 **Output:** true **Explanation:** 28 = 1 + 2 + 4 + 7 + 14 1, 2, 4, 7, and 14 are all divisors of 28. **Example 2:** **Input:** num = 7 **Output:** false **Constraints:** *1 <= num <= 108
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Constructor Summary
Constructors Constructor Description Solution()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleancheckPerfectNumber(int num)
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