Package g0501_0600.s0507_perfect_number
Class Solution
- java.lang.Object
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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 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 dividex
evenly.Given an integer
n
, returntrue
ifn
is a perfect number, otherwise returnfalse
.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 boolean
checkPerfectNumber(int num)
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