Leetcode题解 231. Power of Two

Given an integer, write a function to determine if it is a power of two.
没啥说的，很简单的题。

public static boolean isPowerOfTwo(int n) {        if (n == 1) {            return true;        } else if (n <= 0) {            return false;        } else {            while (n > 0) {                if (n == 1) {                    return true;                }                if (n % 2 == 1) {                    return false;                }                n /= 2;            }            return false;        }    }