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

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

Github: code.dennyzhang.com

Credits To: leetcode.com

Leave me comments, if you have better ways to solve.

## Blog link: https://code.dennyzhang.com/power-of-two class Solution(object): def isPowerOfTwo(self, n): """ :type n: int :rtype: bool """ if n <= 0: return False return n & (n-1) == 0