//DFS Implementation
static List <City> TopSort(RailwayNetwork railway, City startCity)
{
var sortedCities = new Queue <City>();
return(sortedCities.ToList());
}
static List <City> DFSTraversal(RailwayNetwork railway, City startCity, LinkedList <City> visited)
{
var currentCity = startCity;
visited.AddLast(startCity);
if (visited.Count == railway.Cities.Count)
{
return(visited.ToList());
}
foreach (var city in currentCity.Neighbours)
{
if (!visited.Contains(city.Value))
{
DFSTraversal(railway, city.Value, visited);
}
}
return(visited.ToList());
}
static List <City> BFS(RailwayNetwork railway, City startCity)
{
var visited = new LinkedList <City>();
var nextCities = new Queue <City>();
var currentCity = startCity;
visited.AddLast(startCity);
while (visited.Count < railway.Cities.Count)
{
foreach (var city in currentCity.Neighbours)
{
if (!visited.Contains(city.Value))
{
visited.AddLast(city.Value);
}
nextCities.Enqueue(city.Value);
}
currentCity = nextCities.Dequeue();
}
return(visited.ToList());
}
static void Main(string[] args)
{
RailwayNetwork railway = new RailwayNetwork();
var sofia = new City("Sofia");
var pleven = new City("Pleven");
var plovdiv = new City("Plovdiv");
var blagoevgrad = new City("Blagoevgrad");
var varna = new City("Varna");
var staraZagora = new City("Stara Zagora");
var burgas = new City("Burgas");
sofia.Neighbours.AddFirst(new LinkedListNode <City>(pleven));
sofia.Neighbours.AddLast(new LinkedListNode <City>(plovdiv));
sofia.Neighbours.AddLast(new LinkedListNode <City>(blagoevgrad));
pleven.Neighbours.AddLast(new LinkedListNode <City>(varna));
plovdiv.Neighbours.AddLast(new LinkedListNode <City>(staraZagora));
plovdiv.Neighbours.AddLast(new LinkedListNode <City>(burgas));
varna.Neighbours.AddLast(new LinkedListNode <City>(staraZagora));
varna.Neighbours.AddLast(new LinkedListNode <City>(burgas));
staraZagora.Neighbours.AddLast(new LinkedListNode <City>(burgas));
railway.Cities.Add(sofia);
railway.Cities.Add(pleven);
railway.Cities.Add(plovdiv);
railway.Cities.Add(blagoevgrad);
railway.Cities.Add(varna);
railway.Cities.Add(staraZagora);
railway.Cities.Add(burgas);
BFS(railway, sofia).ForEach(x => Console.WriteLine(x.Name));
Console.WriteLine();
DFS(railway, sofia).ForEach(x => Console.WriteLine(x.Name));
}
static List <City> DFS(RailwayNetwork railway, City startCity)
{
var visited = new LinkedList <City>();
return(DFSTraversal(railway, startCity, visited));
}