public static List <RoadList <string> > GetCombinations(RoadList <string> toateDrumurile, int combinationLength)
{
List <RoadList <string> > combinatii = new List <RoadList <string> >();
Combinations <Road <string> > combinations = new Combinations <Road <string> >(toateDrumurile, combinationLength);
//string cformat = "Combinations of {{A B C D}} choose 2: size = {0}";
//Console.WriteLine(String.Format(cformat, combinations.Count));
foreach (IList <Road <string> > c in combinations)
{
RoadList <string> listadrumuri = new RoadList <string>();
foreach (Road <string> road in c)
{
listadrumuri.Add(road);
}
combinatii.Add(listadrumuri);
//Console.WriteLine(String.Format("{{{0} {1}}}", c[0], c[1]));
}
/*foreach (RoadList<string> c in combinatii)
* {
* foreach (var d in c)
* {
* Console.WriteLine(d);
* }
* Console.WriteLine("_______________________________");
* }*/
return(combinatii);
}
public bool AddRoad(Road road)
{
if (RoadList.Count < RoadLimits)
{
RoadList.Add(road);
NeighbourStationList.Add(road.Next(this), road);
return(true);
}
else
{
return(false);
}
}
static void Main(string[] args)
{
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> CITESTE DIN FISIER <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
try
{
_drumuriInitiale = GetInitialRoads();
int maximumDrumuri = nrOrase * (nrOrase - 1) / 2;
Console.WriteLine("Unic? {0}", Utilities.AllUnique(_drumuriInitiale));
Console.WriteLine("Numarul de drumuri existente = {0}", nrDrumuri);
Console.WriteLine("Numarul maxim de drumuri posibile = {0}", maximumDrumuri);
Console.WriteLine("Numarul de drumuri posibile = {0}", maximumDrumuri);
}
catch (Exception e)
{
Console.WriteLine($"Exception occured:\n{e.Message}");
}
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> INAINTE DE EXPLOZIE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
int[,] adjMatrix = new int[nrOrase, nrOrase];
Topologie = new Dictionary <int, GraphNode <string> >();
foreach (drum d in _drumuriInitiale)
{
adjMatrix[d.oras1 - 1, d.oras2 - 1] = 1;
adjMatrix[d.oras2 - 1, d.oras1 - 1] = 1;
}
//PrintMatrix(adjMatrix);
Graph <string> PlanetaInitiala = new Graph <string>();
//adauga planetele in obiectul Graph
for (int i = 0; i < nrOrase; i++)
{
PlanetaInitiala.AddNode((i + 1).ToString());
//Topologie.Add(i+1,);
}
//adauga drumurile in obiectul Graph
foreach (drum d in _drumuriInitiale)
{
GraphNode <string> from = (GraphNode <string>)PlanetaInitiala.Nodes.FindByValue(d.oras1.ToString());
GraphNode <string> to = (GraphNode <string>)PlanetaInitiala.Nodes.FindByValue(d.oras2.ToString());
PlanetaInitiala.AddUndirectedEdge(from, to);
}
PlanetaInitiala.PrintGraph();
//_________________________________ Avem PlanetaInitiala __________________________________________
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> DUPA EXPLOZIE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
// Creaza noaua matrice de drumuri dupa explozie
int[,] NewAdjMatrix = new int[nrOrase, nrOrase];
for (int i = 0; i < nrOrase; i++)
{
for (int j = 0; j < nrOrase; j++)
{
if ((adjMatrix[i, j] == 0) & (i != j))
{
NewAdjMatrix[i, j] = 1;
}
}
}
//Console.WriteLine("++++++++++++++++++++++++++++++++++++");
//PrintMatrix(NewAdjMatrix);
//Adauga orasele initiale
Graph <string> PlanetaDupaExplozie_DinFisier = new Graph <string>();
for (int i = 0; i < PlanetaInitiala.Count; i++)
{
PlanetaDupaExplozie_DinFisier.AddNode((i + 1).ToString());
}
//Adauga drumurile dupa explozie
//Console.WriteLine("Dupa explozie au fost adaugate {0} drumuri.", GraphFromMatrix(out PlanetaDupaExplozie, NewAdjMatrix)); //au fost adaugate drumurile in Graf
GraphFromMatrix(out PlanetaDupaExplozie_DinFisier, NewAdjMatrix);
PlanetaDupaExplozie_DinFisier.PrintGraph();
//____________________________________ Avem PlanetaDupaExplozie ______________________________________
nrOraseDinFisier = nrOrase;
nrDrumuriDinFisier = nrDrumuri;
bool EXISTA_SOLUTIE = false;
bool ADAUGA_ORAS_PUNCT_MORT = false;
int numardewhileuri = 0;
while (!EXISTA_SOLUTIE)
{
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> VERIFICA DACA MAI TREBUIE ADAUGATE ORASE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
int NumarInitialDeOrase = nrOrase;
int NumarNouDeOrase = nrOrase;
int maxDrumuri = nrOrase * (nrOrase - 1) / 2; // cand adaug un oras se schimba numarul maxim de drumuri posibile
int AddNewCities_01 = maxDrumuri % 2;
double NumarDrumuriDeAdaugat = maxDrumuri / 2 - nrDrumuri; //nrDrumuri ramane acelasi citit din fisier, nu adaug niciun drum, doar orase
// conditiile in care se adauga un oras nou: daca in declaratie sunt TRUE => se adauga un oras nou
// se adauga un oras nou cand CEL PUTIN UNA din conditii este FALSE
bool conditia1 = (AddNewCities_01 == 0); // daca restul e zero = se pot genera atatea drumuri cate au fost, daca restul e 1, numarul total de drumuri e impar si trebuie sa adaug oras
bool conditia2 = (NumarDrumuriDeAdaugat >= 0); // daca NumarDrumuriDeAdaugat >= 0 inseamna ca dupa explozie raman destule drumuri ca sa pot reconstitui graful initial
bool conditia3 = (NumarDrumuriDeAdaugat == Math.Floor(NumarDrumuriDeAdaugat)); // numarul de drumuri care trebuie adaugate trebuie sa fie intreg, duh!
bool conditia4 = ADAUGA_ORAS_PUNCT_MORT;
while ((!conditia1) | (!conditia2) | (!conditia3) | (ADAUGA_ORAS_PUNCT_MORT))
{
NumarNouDeOrase++;
PlanetaInitiala.AddNode(NumarNouDeOrase.ToString());
maxDrumuri = NumarNouDeOrase * (NumarNouDeOrase - 1) / 2;
AddNewCities_01 = maxDrumuri % 2;
if (AddNewCities_01 == 0)
{
conditia1 = true;
}
else
{
conditia1 = false;
}
NumarDrumuriDeAdaugat = maxDrumuri / 2 - nrDrumuri;
if (NumarDrumuriDeAdaugat >= 0)
{
conditia2 = true;
}
else
{
conditia2 = false;
}
if (NumarDrumuriDeAdaugat == Math.Floor(NumarDrumuriDeAdaugat))
{
conditia3 = true;
}
else
{
conditia3 = false;
}
if (ADAUGA_ORAS_PUNCT_MORT)
{
conditia4 = false;
ADAUGA_ORAS_PUNCT_MORT = false;
}
}
int NumarDeOraseAdaugate = NumarNouDeOrase - NumarInitialDeOrase;
nrOrase = NumarNouDeOrase;
Console.WriteLine("Au mai fost adaugate {0} orase.", NumarDeOraseAdaugate);
Console.WriteLine("Numar total de orase dupa adaugare de orase = {0}", nrOrase);
Graph <string> PlanetaDupaExplozie = new Graph <string>();
if (NumarDeOraseAdaugate > 0) // Recalculeaza si PlanetaDupaExplozie daca s-au modificat numarul de orase
{
PlanetaDupaExplozie = CreazaPlanetaDupaExplozie(PlanetaInitiala);
}
else
{
PlanetaDupaExplozie = PlanetaDupaExplozie_DinFisier; // DUBIOUS ??????????? - copiere de referinta, eh plm
}
Console.WriteLine("++++++++++++++++++++++++++++++++++");
PlanetaInitiala.PrintGraph();
PlanetaDupaExplozie.PrintGraph();
Console.WriteLine("++++++++++++++++++++++++++++++++++");
//____________________________________ Avem numarul de orase corect ______________________________________
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> VERIFICA DACA MAI TREBUIE ADAUGATE DRUMURI NOI <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
Console.WriteLine("Inaine de explozie au fost {0} drumuri.", PlanetaInitiala.EdgeCount);
Console.WriteLine("Dupa explozie sunt {0} drumuri.", PlanetaDupaExplozie.EdgeCount);
Console.WriteLine("Numar corect de drumuri? -> {0}", (PlanetaInitiala.EdgeCount + PlanetaDupaExplozie.EdgeCount) == (nrOrase * (nrOrase - 1) / 2));
bool AddNewRoads = PlanetaInitiala.EdgeCount < PlanetaDupaExplozie.EdgeCount;
Console.WriteLine("Mai este nevoie de noi drumuri? -> {0}", AddNewRoads);
int nrOfRoadsToBeAdded = 0;
if (AddNewRoads)
{
nrOfRoadsToBeAdded = ((nrOrase * (nrOrase - 1) / 2 / 2) - PlanetaInitiala.EdgeCount);
}
Console.WriteLine("Mai este nevoie de {0} noi drumuri.", nrOfRoadsToBeAdded);
//
// parcurgere si adaugare laturi
//
if (AddNewRoads)
{
//
// >>>>>>>>>>>>>>>>>>>>>>>>>> ADAUGARE DRUMURI NOI <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
//
RoadList <string> DrumuriDeAdaugat = new RoadList <string>(); //va contine toate drumurile suplimentare care pot fi adaugate, prin asta voi merge cu foreach
List <RoadList <string> > CombinatiiDrumuriDeAdaugat = new List <RoadList <string> >();
Dictionary <Road <string>, bool> DrumVerificat = new Dictionary <Road <string>, bool>(); //dictionar in care tin seama daca am suplimentat sau nu un drum
Queue <Road <string> > DrumQueue = new Queue <Road <string> >();
foreach (GraphNode <string> nod in PlanetaInitiala.Nodes) // parcurge fiecare nod
{
// creaza laturile posibile a fi adaugate pentru fiecare nod
NodeList <string> diferenta = GetDiff(PlanetaInitiala.Nodes, nod.Neighbors);
diferenta.Remove(nod);
foreach (GraphNode <string> nodNou in diferenta)
{
DrumuriDeAdaugat.Add(new Road <string>(nod, nodNou));
}
}
Console.WriteLine(DrumuriDeAdaugat.ToString());
// creaza toate combinatiile posibile de drumuri care pot fi adaugate
CombinatiiDrumuriDeAdaugat = GetCombinations(DrumuriDeAdaugat, nrOfRoadsToBeAdded);
//PlanetaInitialaDeLucru.PrintGraph();
// in acest punct am :
// - o planeta initiala pentru care stiu cate drumuri trebuie sa adaug ca sa o fac solutie posibila
// - toate combinatiile posibile de drumuri care pot fi adaugate
// mai departe:
// - incep sa adaug perechi de drumuri in planeta initiala
// - recalculez planeta dupa explozie
// - verific daca cele doua topologii pot fi rezolvate
bool GasitSolutie = false;
int pasCurent = 0;
while ((!GasitSolutie) & (pasCurent < CombinatiiDrumuriDeAdaugat.Count))
{
Graph <string> PlanetaInitiala_DeLucru = new Graph <string>(PlanetaInitiala.Nodes); // copie de lucru
//PlanetaInitiala_DeLucru.PrintGraph();
Graph <string> PlanetaDupaExplozie_DeLucru = CreazaPlanetaDupaExplozie(PlanetaInitiala_DeLucru); //creeaza noua planeta dupa explozie
//PlanetaDupaExplozie_DeLucru.PrintGraph();
//Console.WriteLine(CombinatiiDrumuriDeAdaugat[pasCurent].ToString());
PlanetaInitiala_DeLucru.AddUndirectedEdge(CombinatiiDrumuriDeAdaugat[pasCurent]); // adauga drumuri noi in planeta initiala
Console.WriteLine("Se adauga urmatorul drum: {0}", CombinatiiDrumuriDeAdaugat[pasCurent].ToString());
Console.WriteLine("Planeta initala de lucru dupa adaugare noi drumuri:");
PlanetaInitiala_DeLucru.PrintGraph();
PlanetaDupaExplozie_DeLucru = CreazaPlanetaDupaExplozie(PlanetaInitiala_DeLucru); // creeaza planeta dupa explozie din graful modificat de dinainte de exlozie
Console.WriteLine("Planeta dupa explozie de lucru dupa adaugare noi drumuri:");
PlanetaDupaExplozie_DeLucru.PrintGraph();
if (PoateFiSol(PlanetaInitiala_DeLucru, PlanetaDupaExplozie_DeLucru))
{
GasitSolutie = true;
Console.WriteLine("-----gasita la pas {0}", pasCurent);
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> incepe sa schimbi nodurile intre ele <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
}
else
{
foreach (Road <string> road in CombinatiiDrumuriDeAdaugat[pasCurent])
{
PlanetaInitiala.Nodes
}
pasCurent++;
Console.WriteLine("Graful propus nu poate fi solutie. Se trece la urmatorul pas si se adauga alt grup de drumuri.");
}
//PlanetaInitialaDeLucru.PrintGraph();
}
if ((GasitSolutie) & (pasCurent < CombinatiiDrumuriDeAdaugat.Count)) //a fost gasita o solutie -> scrie in fisier
{
Console.WriteLine("Solutia este:");
Console.WriteLine("");
Console.WriteLine(CombinatiiDrumuriDeAdaugat[pasCurent]);
EXISTA_SOLUTIE = true;
}
// daca nu a fost gasita o solutie dupa ce s-au adaugat toate combinatiile de drumuri posibilie
// inseamna ca graful asta nu poate avea nicio solutie si atunci trebuie sa ma intorc sa adaug oras
if ((!GasitSolutie) & (pasCurent >= CombinatiiDrumuriDeAdaugat.Count))
{
ADAUGA_ORAS_PUNCT_MORT = true; //adauga oras
}
}
else
{
Console.WriteLine("Nu mai trebuie sa adaug niciun drum nou dar trebuie sa verific daca chestia asta poate fi solutie.");
bool PoateFiSolutie = PoateFiSol(PlanetaInitiala, PlanetaDupaExplozie);
Console.WriteLine("Poate fi solutie? => {0}", PoateFiSolutie);
if (PoateFiSolutie)
{
//a fost gasita o solutie -> scrie in fisier
EXISTA_SOLUTIE = true;
}
else
{
// daca asta nu este solutie trebuie sa ma intorc sa adaug un oras
ADAUGA_ORAS_PUNCT_MORT = true; // adauga oras
}
}
numardewhileuri++;
}
Console.ReadKey();
}