[leetcode][231] Power of Two
Given an integer, write a function to determine if it is a power of two.
class Solution(object):
def isPowerOfTwo(self, n):
"""
:type n: int
:rtype: bool
"""
if n == 0:
return False
elif n==1:
return True
elif n%2 == 1:
return False
else:
return self.isPowerOfTwo(n//2)
