Given an integer n, return true if it is a power of two. Otherwise, return false.
An integer n is a power of two, if there exists an integer x such that n == 2x.
Examples
Example 1
Input: n = 1
Output: true
Explanation: 20 = 1
Example 2
Input: n = 16
Output: true
Explanation: 24 = 16
Example 3
Input: n = 3
Output: false
Constraints
-231 <= n <= 231 - 1
231. Power of Two
Easy
10 Points
Math
Bit Manipulation
Recursion
Given an integer n, return true if it is a power of two. Otherwise, return false.
An integer n is a power of two, if there exists an integer x such that n == 2x.