g0201_0300.s0231_power_of_two.Solution

public class Solution extends Object

231 - Power of Two.

Easy

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 == 2^x.

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

Example 4:

Input: n = 4

Output: true

Example 5:

Input: n = 5

Output: false

Constraints:

Follow up: Could you solve it without loops/recursion?

Class Solution

Constructor Summary