xzhang311/Q231PowerOfTwo.cpp

## Q231PowerOfTwo.cpp
class Solution {
public:
    bool isPowerOfTwo(int n) {
        double num = log2(n);
        return n==0? false:num==round(num);
    }
};
	class Solution {
	public:
	bool isPowerOfTwo(int n) {
	double num = log2(n);
	return n==0? false:num==round(num);
	}
	};