_231. Power of Two.md

231. Power of Two

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First completed : March 04, 2025

Last updated : March 04, 2025

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Related Topics : Math, Bit Manipulation, Recursion

Acceptance Rate : 48.22 %

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Solutions

• e231 v2.py
• e231.py

Python

e231 v2.py

class Solution:
    def isPowerOfTwo(self, n: int) -> bool:
        return n > 0 and bin(n).count('1') == 1

e231.py

class Solution:
    def isPowerOfTwo(self, n: int) -> bool:
        return n >= 1 and (n == 1 or n // 2 * 2 == n and self.isPowerOfTwo(n // 2))