Function f

HackerEarth_problems/Shubham and Subarray Xor/solution.cpp:72–82

}
 
string f(int n)
{
    string s(M, '0');
    for (int i = 0; i < M; i++)
    {
        s[i] = ('0' + n % 2);
        n = n / 2;
    }
    reverse(s.begin(), s.end());
    return s;
}
 
int main()
{