power of two
1from math import log2
2class Solution:
3 def isPowerOfTwo(self, n: int) -> bool:
4 if n > 0:
5 l = log2(n)
6 return (l - int(l)) == 0
1from math import log2
2class Solution:
3 def isPowerOfTwo(self, n: int) -> bool:
4 if n > 0:
5 l = log2(n)
6 return (l - int(l)) == 0