Tranpose and rotate matrix by 90degree (both clockwise and anti-clockwise)🚩🚩

/*
(this question is asked in many companies)
the,given matrix is n*n matrix

-->transpose of matrix
    Steps:-
       just swap the lower triangle with the upper triangle of matrix


-->clock-wise rotation by 90 degree
    Steps:-
        1.first find the transpose using above function
        2.the just reverse each row

-->anti-clock-wise rotation  by 90 degree
      Steps:-
        1.first find the transpose using above function
        2.the just reverse each column
        
        
      Time Complexity of all is O(n*n);

*/

vector<vector<int>> transpose(vector<vector<int>> matrix, int n)
{
    for (int i = 0; i < n; i++)
        for (int j = 0; j <= i; j++)
            swap(matrix[i][j], matrix[j][i]);

    return matrix;
}

vector<vector<int>> rotate_clock_wise(vector<vector<int>> matrix, int n)
{
    // getting the transpose of matrix
    matrix = transpose(matrix, n);

    // reversing each row
    for (int i = 0; i < n; i++)
    {
        ll s = 0, l = n - 1;
        while (s <= l)
        {
            swap(matrix[i][s], matrix[i][l]);
            s++;
            l--;
        }
    }

    return matrix;
}
vector<vector<int>> rotate_anti_clock_wise(vector<vector<int>> matrix, int n)
{
    // getting the transpose of matrix
    matrix = transpose(matrix, n);

    // reversing each column
    for (int j = 0; j < n; j++)
    {
        ll s = 0, l = n - 1;
        while (s <= l)
        {
            swap(matrix[s][j], matrix[l][j]);
            s++;
            l--;
        }
    }

    return matrix;
}