static int[] NumberOfDeparts(ref Employee[] emps)
        {
            int[] DepartNums = new int[0];
            int departInt = 0;
            for (int i = 0; i < emps.Length; i++)
            {
                bool check = true;

                for (int j = i; j <= i; j++)
                {
                    if (departInt == emps[j].DepartNum)
                    {
                        check = false;
                    }
                }
                if (check)
                {
                    int[] temp = new int[DepartNums.Length + 1];
                    for (int k = 0; k < DepartNums.Length; k++)
                    {
                        temp[k] = DepartNums[k];
                    }
                    DepartNums = new int[temp.Length];
                    for (int k = 0; k < DepartNums.Length; k++)
                    {
                        DepartNums[k] = temp[k];
                    }
                    DepartNums[DepartNums.Length - 1] = emps[i].DepartNum;
                    departInt = emps[i].DepartNum;
                }
                
            }
            return DepartNums;
        }