Calculate the time complexity for the following function in terms of Big O notation. Explain your answer.

[Note: Line numbers are only for reference purpose]

int fun(int n)

{

1 intcount = 0;

2 for (int i = n; i >= 0; i /= 2)

3 count += i;

4for (int j = 0; j < n; j++)

5count +=j;

6 return count;

}