static Locomotive RemoveUnprofitable(Locomotive L)
{
RailCar A = L.getFirstRailCar();
RailCar B = A.getNext();
if (B == null)
{
if (!A.isProfitable())
{
L.setFirstRailCar(null);
}
}
else
{
while (A != null && B != null)
{
if (!A.isProfitable())
{
L.setFirstRailCar(B);
A = B;
B = B.getNext();
}
else if (!B.isProfitable())
{
B = B.getNext();
A.setNext(B);
}
else
{
A = B;
B = B.getNext();
}
}
if (A != null)
{
if (!A.isProfitable())
{
L.setFirstRailCar(null);
}
}
}
return(L);
}
static void PrintTrain(Locomotive train)
{
Write("\n");
RailCar railCar = train.getFirstRailCar();
Write("L");
while (railCar != null)
{
Write($"-{railCar.toString()}");
railCar = railCar.getNext();
}
}
static Locomotive ReverseOrder(Locomotive L)
{
Locomotive reverse = new Locomotive();
reverse.setFirstRailCar(L.getFirstRailCar().clone());
RailCar first = reverse.getFirstRailCar();
first.setNext(null);
RailCar car = L.getFirstRailCar();
RailCar newCar = L.getFirstRailCar();
while (car.getNext() != null)
{
newCar = car.getNext().clone();
newCar.setNext(first);
reverse.setFirstRailCar(newCar);
first = reverse.getFirstRailCar();
car = car.getNext();
}
return(reverse);
}
public void attachRailCar(RailCar newCar)
{
if (first == null)
{
first = newCar;
}
else
{
RailCar append = first;
bool insert = false;
if (string.Compare(newCar.toString(), first.toString()) == -1)
{
newCar.setNext(first);
first = newCar;
}
else
{
while (append != null && !insert)
{
if (append.getNext() == null)
{
insert = true;
append.setNext(newCar);
}
else if (string.Compare(newCar.toString(), append.getNext().toString()) == -1)
{
insert = true;
newCar.setNext(append.getNext());
append.setNext(newCar);
}
append = append.getNext();
}
}
}
}