Number of 1 Bits

class Solution {
public:
    int hammingWeight(uint32_t n) {
        string aaa = toBinary(n);
        in count = ;
        for(int i = ; i < sizeof(aaa); i++)    {
            if(aaa[i] == "")
                count++;
        }
        return count;
    }

    string toBinary(unsigned int val)    {
        string aaa = "";
        for(int i = ; i >= ; i--)    {
            if(val & ( << i))
                aaa += "";
            else
                aaa += "";
        }
        return aaa;
    }

};