p4_PowerOfTwo.cpp

//https://leetcode.com/problems/power-of-two/description/
class Solution {
public:
    bool isPowerOfTwo(int n) {
        if(n<1)
        return 0 ;
        
        while(n != 1)
        {
            if(n%2 == 1)
            return 0 ;
            n/=2;
        }
        return 1;
    }
};