/// <summary>
/// Moves an Executive out of the current department, into a new department
/// </summary>
/// <param name="executive"></param>
/// <param name="department"></param>
public void Change(Executive executive, Department department)
{
//remove executive from current department
this.Quit(executive);
//add exectuvie to target department
department.Join(executive);
}
/// <summary>
/// Adds a new Executive to the Queue.
/// </summary>
/// <remarks>Updates payroll.</remarks>
/// <param name="executive"></param>
public void Join(Executive executive)
{
//add new executive to end of queue
Executives.Enqueue(executive);
//update payroll
Payroll();
}
/// <summary>
/// Finds an Exeuctive by their ExecutiveID and removes them from the Queue.
/// If a match is not found, no error occurs. The queue is simply unchanged.
/// </summary>
/// <remarks>Updates payroll.</remarks>
/// <param name="executive"></param>
public void Quit(Executive executive)
{
//number of elements in queue
int count = Executives.Count;
int salary = SALARY_RATE * count;
//evaluate every element in the queue
for (int i = 0; i < count; i++) {
//remove the first item in the queue
Executive current = Executives.Dequeue();
//if not a match, return the item to the end of the queue
if (current.EmployeeID != executive.EmployeeID) {
salary -= SALARY_RATE;
current.Salary = salary;
Executives.Enqueue(current);
}
//if a match is found, the item will not be returned to the queue, thus removing it permanently
}
//when the loop finishes, all elements will be correctly ordered with accurate salary
}
