leetcode326

public class Solution {
    public bool IsPowerOfThree(int n) {
        return n >  && ( % n == );
    }
}

https://leetcode.com/problems/power-of-three/#/description

使用循环实现，python

 class Solution:
     def isPowerOfThree(self, n: int) -> bool:
         while n >  and n % == :
             n = n //
         return n ==