[leetCode] 326. Power of Three (Python)

Given an integer, write a function to determine if it is a power of three.

 

Example 1:

Input: 27
Output: true

Example 2:

Input: 0
Output: false

Example 3:

Input: 9
Output: true

Example 4:

Input: 45
Output: false

Follow up:
Could you do it without using any loop / recursion?

 

Solution

class Solution:
    def isPowerOfThree(self, n: int) -> bool:
        return n > 0 and pow(3, 31, n) == 0

 

SOMJANG/CODINGTEST_PRACTICE