/// <summary>
/// Проверяет, содержит ли список станция указанную станцию
/// </summary>
/// <param name="stationsList"></param>
/// <param name="stationToCheck"></param>
/// <returns></returns>
private bool IsContains(List <IStation> stationsList, IStation stationToCheck)
{
foreach (IStation station in stationsList)
{
if (station.GetStationID() == stationToCheck.GetStationID())
{
return(true);
}
}
return(false);
}
public int GetLevelOfStation(IStation station)
{
for (int i = stations.Count - 1; i >= 0; i--)
{
if (stations[i].GetStationID() == station.GetStationID())
{
return(levels[i]);
}
}
return(-1);
}
/// <summary>
/// Ищет путь от станции А к станции Б
/// </summary>
/// <param name="stationFrom"></param>
/// <param name="stationTo"></param>
/// <param name="pastStation"></param>
/// <returns></returns>
public List <IStation> FindPath(IStation stationFrom, IStation stationTo)
{
Queue <IStation> searchQueue = new Queue <IStation>();
List <IStation> searched = new List <IStation>();
ITempStationsContainer pathContainer = new StationsContainer();
int currentLevel = 0;
IStation stationFrom_Temp = stationFrom;
searchQueue.Enqueue(stationFrom_Temp);
searched.Add(stationFrom_Temp);
pathContainer.AddToContainer(stationFrom_Temp, currentLevel);
bool IsPathFound = false;
while (searchQueue.Count > 0)
{
stationFrom_Temp = searchQueue.Dequeue();
foreach (IStation station in stationFrom_Temp.GetConnectedStations())
{
if (!IsContains(searched, station))
{
if (station.GetStationID() == stationTo.GetStationID())
{
IsPathFound = true;
}
else
{
searchQueue.Enqueue(station);
searched.Add(station);
currentLevel = SetStationLevel(pathContainer, station, currentLevel);
pathContainer.AddToContainer(station, currentLevel);
}
}
}
if (IsPathFound)
{
break;
}
}
return(FormPath(pathContainer, stationFrom, stationTo, currentLevel));
}