public IList<Route> Build(IList<Depot> deports, VehicleInfo venicleInfo, List<Request> requests)
{
BruteForceCounter.MaximumOption = 0;
BruteForceCounter.CurrentOption = 0;
BruteForceCounter.MinPathDistance = 0;
BruteForceCounter.MinPath = null;
while (true)
{
var routes = new List<Route>();
var unservicedRequests = requests;
var venicles = CreateVenicles(deports);
foreach (var venicle in venicles)
{
var route = BuildRoute(venicle, unservicedRequests);
if (route == null)
continue;
unservicedRequests = unservicedRequests.Except(route.Requests).ToList();
routes.Add(route);
}
BruteForceCounter.PossibleRequests = BruteForceCounter.PossibleRequests.Concat(routes.SelectMany(r => r.Requests)).ToList();
if (unservicedRequests.Count() == requests.Count())
if (BruteForceCounter.MinPath == null)
throw new ImpossibleRouteException("Can service all requests", requests.Except(BruteForceCounter.PossibleRequests).ToList());
else
return BruteForceCounter.MinPath;
BruteForceCounter.MaximumOption++;
BruteForceCounter.CurrentOption = 0;
var totalDistance = routes.Sum(r => r.GetTotalDistance());
if (unservicedRequests.Any() || !(BruteForceCounter.MinPathDistance > totalDistance || BruteForceCounter.MinPath == null))
continue;
BruteForceCounter.MinPathDistance = totalDistance;
BruteForceCounter.MinPath = routes;
}
}
public Route(VehicleInfo venicleInfo)
{
_venicleInfo = venicleInfo;
Requests = new List<Request>();
}
public static ExampleObject LoadProblem(string filename)
{
String _name = "";
int _num_depots = 0;
int num_capacities = 0;
int _num_visits = 0;
int _num_locations = 0;
int _num_vehicles = 0;
int _capacities = 0;
double CUT_OFF_TIME = 0.5;
int requestEnd = 0;
String[] linesOfFile = {};
try {
linesOfFile = File.ReadAllLines(filename + ".vrp");
} catch (Exception e) {
Console.WriteLine("EXCEPTION: " + e.Message);
}
String tempValue = "";
String[] aboveData;
String[] separators = { ":" };
for (int i = 0; i < linesOfFile.Count(); i++) {
aboveData = linesOfFile[i].Split(separators, StringSplitOptions.RemoveEmptyEntries);
if(aboveData.Count() > 1)
tempValue = aboveData[1];
switch (aboveData[0]) {
case "NAME":
_name = tempValue;
break;
case "NUM_DEPOTS":
_num_depots = Int32.Parse(tempValue);
break;
case "NUM_CAPACITIES":
num_capacities = Int32.Parse(tempValue);
break;
case "NUM_VISITS":
_num_visits = Int32.Parse(tempValue);
break;
case "NUM_LOCATIONS":
_num_locations = Int32.Parse(tempValue);
break;
case "NUM_VEHICLES":
_num_vehicles = Int32.Parse(tempValue);
break;
case "CAPACITIES":
_capacities = Int32.Parse(tempValue);
break;
default:
continue;
}
}
//Parsing DATA SECTION
IList<Depot> listOfDepots = new List<Depot>();
List<Request> listOfRequests = new List<Request>();
for (int j = 0; j < linesOfFile.Count(); j++) {
if (linesOfFile[j] == "DATA_SECTION") {
for(int z = 1; z <= linesOfFile.Count() - (j+1); z++){
switch(linesOfFile[j+z].ToString()){
case "DEPOTS":
for (int i = 1; i <= _num_depots; i++) {
Depot newDepot = new Depot();
newDepot.Name = linesOfFile[j + z + i].ToString();
newDepot.Vehicles = _num_vehicles;
listOfDepots.Add(newDepot);
}
break;
case "DEMAND_SECTION":
String[] demandSectionLine;
String[] demandSectionSeparator = {" "};
for (int i = 1; i <= _num_visits; i++) {
Request newRequest = new Request();
demandSectionLine = linesOfFile[j + z + i].Split(demandSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
newRequest.Id = Int32.Parse(demandSectionLine[0]);
newRequest.Size = -Int32.Parse(demandSectionLine[1]);
listOfRequests.Add(newRequest);
}
break;
case "LOCATION_COORD_SECTION":
String[] locationCoordSectionLine;
String[] locationCoordSectionSeparator = { " " };
for (int i = 1; i <= _num_depots; i++) {
locationCoordSectionLine = linesOfFile[j + z + i].Split(locationCoordSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
Point depoLocation = new Point(double.Parse(locationCoordSectionLine[1]), double.Parse(locationCoordSectionLine[2]));
listOfDepots.ElementAt(Int32.Parse(locationCoordSectionLine[0])).Location = depoLocation;
}
for (int i = (_num_depots+1); i <= _num_visits+1; i++) {
locationCoordSectionLine = linesOfFile[j + z + i].Split(locationCoordSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
Point requestLocation = new Point(double.Parse(locationCoordSectionLine[1]), double.Parse(locationCoordSectionLine[2]));
listOfRequests.ElementAt(i - 2).Location = requestLocation;
}
break;
case "DEPOT_LOCATION_SECTION":
//f*****g skip it
break;
case "VISIT_LOCATION_SECTION":
//no f*****g clue dude
break;
case "DURATION_SECTION":
String[] durationSectionLine;
String[] durationSectionSeparator = { " " };
for (int i = 1; i <= _num_visits; i++) {
durationSectionLine = linesOfFile[j + z + i].Split(durationSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfRequests.ElementAt(i - 1).Unload = Int32.Parse(durationSectionLine[1]);
}
break;
case "DEPOT_TIME_WINDOW_SECTION":
String[] depotTimeWidnowSectionLine;
String[] depotTimeWidnowSectionSeparator = { " " };
requestEnd = 0;
for (int i = 1; i <= _num_depots; i++) {
depotTimeWidnowSectionLine = linesOfFile[j + z + i].Split(depotTimeWidnowSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfDepots.ElementAt(i - 1).Start = 0;
listOfDepots.ElementAt(i - 1).End = Int32.Parse(depotTimeWidnowSectionLine[2]);
requestEnd = Int32.Parse(depotTimeWidnowSectionLine[2]);
}
for (int i = 1; i <= _num_visits; i++) {
listOfRequests.ElementAt(i - 1).End = requestEnd;
}
break;
case "TIME_AVAIL_SECTION":
String[] timeAvailSectionLine;
String[] timeAvailSectionSeparator = { " " };
for (int i = 1; i <= _num_visits; i++) {
timeAvailSectionLine = linesOfFile[j + z + i].Split(timeAvailSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfRequests.ElementAt(i - 1).Start = Int32.Parse(timeAvailSectionLine[1]);
// ZMIANA TIME AVAILABLE
if (listOfRequests.ElementAt(i - 1).Start > (CUT_OFF_TIME * listOfRequests.ElementAt(i - 1).End))
listOfRequests.ElementAt(i - 1).Start = 0;
}
break;
default:
continue;
}
}
}
}
VehicleInfo vehicleInfo = new VehicleInfo();
vehicleInfo.Speed = 1;
vehicleInfo.Capacity = _capacities;
ExampleObject Example = new ExampleObject();
Example.Depots = listOfDepots;
Example.vehicleInfo = vehicleInfo;
Example.Requests = listOfRequests;
return Example;
}
public static ExampleObject LoadProblemFromString(string file)
{
String _name = "";
int _num_depots = 0;
int num_capacities = 0;
int _num_visits = 0;
int _num_locations = 0;
int _num_vehicles = 0;
int _capacities = 0;
double CUT_OFF_TIME = 0.5;
int requestEnd = 0;
String[] linesOfFile = { };
linesOfFile = file.Split('\n');
String tempValue = "";
String[] aboveData;
String[] separators = { ":" };
for (int i = 0; i < linesOfFile.Count(); i++)
{
aboveData = linesOfFile[i].Split(separators, StringSplitOptions.RemoveEmptyEntries);
if (aboveData.Count() > 1)
{
tempValue = aboveData[1];
}
switch (aboveData[0])
{
case "NAME":
_name = tempValue;
break;
case "NUM_DEPOTS":
_num_depots = Int32.Parse(tempValue);
break;
case "NUM_CAPACITIES":
num_capacities = Int32.Parse(tempValue);
break;
case "NUM_VISITS":
_num_visits = Int32.Parse(tempValue);
break;
case "NUM_LOCATIONS":
_num_locations = Int32.Parse(tempValue);
break;
case "NUM_VEHICLES":
_num_vehicles = Int32.Parse(tempValue);
break;
case "CAPACITIES":
_capacities = Int32.Parse(tempValue);
break;
default:
continue;
}
}
//Parsing DATA SECTION
IList <Depot> listOfDepots = new List <Depot>();
List <Request> listOfRequests = new List <Request>();
for (int j = 0; j < linesOfFile.Count(); j++)
{
if (linesOfFile[j] == "DATA_SECTION")
{
for (int z = 1; z <= linesOfFile.Count() - (j + 1); z++)
{
switch (linesOfFile[j + z].ToString())
{
case "DEPOTS":
for (int i = 1; i <= _num_depots; i++)
{
Depot newDepot = new Depot();
newDepot.Name = linesOfFile[j + z + i].ToString();
newDepot.Vehicles = _num_vehicles;
listOfDepots.Add(newDepot);
}
break;
case "DEMAND_SECTION":
String[] demandSectionLine;
String[] demandSectionSeparator = { " " };
for (int i = 1; i <= _num_visits; i++)
{
Request newRequest = new Request();
demandSectionLine = linesOfFile[j + z + i].Split(demandSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
newRequest.Id = Int32.Parse(demandSectionLine[0]);
newRequest.Size = -Int32.Parse(demandSectionLine[1]);
listOfRequests.Add(newRequest);
}
break;
case "LOCATION_COORD_SECTION":
String[] locationCoordSectionLine;
String[] locationCoordSectionSeparator = { " " };
for (int i = 1; i <= _num_depots; i++)
{
locationCoordSectionLine = linesOfFile[j + z + i].Split(locationCoordSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
Point depoLocation = new Point(double.Parse(locationCoordSectionLine[1]), double.Parse(locationCoordSectionLine[2]));
listOfDepots.ElementAt(Int32.Parse(locationCoordSectionLine[0])).Location = depoLocation;
}
for (int i = (_num_depots + 1); i <= _num_visits + 1; i++)
{
locationCoordSectionLine = linesOfFile[j + z + i].Split(locationCoordSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
Point requestLocation = new Point(double.Parse(locationCoordSectionLine[1]), double.Parse(locationCoordSectionLine[2]));
listOfRequests.ElementAt(i - 2).Location = requestLocation;
}
break;
case "DEPOT_LOCATION_SECTION":
//f*****g skip it
break;
case "VISIT_LOCATION_SECTION":
//no f*****g clue dude
break;
case "DURATION_SECTION":
String[] durationSectionLine;
String[] durationSectionSeparator = { " " };
for (int i = 1; i <= _num_visits; i++)
{
durationSectionLine = linesOfFile[j + z + i].Split(durationSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfRequests.ElementAt(i - 1).Unload = Int32.Parse(durationSectionLine[1]);
}
break;
case "DEPOT_TIME_WINDOW_SECTION":
String[] depotTimeWidnowSectionLine;
String[] depotTimeWidnowSectionSeparator = { " " };
requestEnd = 0;
for (int i = 1; i <= _num_depots; i++)
{
depotTimeWidnowSectionLine = linesOfFile[j + z + i].Split(depotTimeWidnowSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfDepots.ElementAt(i - 1).Start = 0;
listOfDepots.ElementAt(i - 1).End = Int32.Parse(depotTimeWidnowSectionLine[2]);
requestEnd = Int32.Parse(depotTimeWidnowSectionLine[2]);
}
for (int i = 1; i <= _num_visits; i++)
{
listOfRequests.ElementAt(i - 1).End = requestEnd;
}
break;
case "TIME_AVAIL_SECTION":
String[] timeAvailSectionLine;
String[] timeAvailSectionSeparator = { " " };
for (int i = 1; i <= _num_visits; i++)
{
timeAvailSectionLine = linesOfFile[j + z + i].Split(timeAvailSectionSeparator, StringSplitOptions.RemoveEmptyEntries);
listOfRequests.ElementAt(i - 1).Start = Int32.Parse(timeAvailSectionLine[1]);
//MADAFAKA ZMIANA TIME AVAILABLE
if (listOfRequests.ElementAt(i - 1).Start > (CUT_OFF_TIME * listOfRequests.ElementAt(i - 1).End))
{
listOfRequests.ElementAt(i - 1).Start = 0;
}
}
break;
default:
continue;
}
}
}
}
VehicleInfo vehicleInfo = new VehicleInfo();
vehicleInfo.Speed = 1;
vehicleInfo.Capacity = _capacities;
ExampleObject Example = new ExampleObject();
Example.Depots = listOfDepots;
Example.vehicleInfo = vehicleInfo;
Example.Requests = listOfRequests;
return(Example);
}
private void TryServe(IList<Depot> Depots, VehicleInfo vehicleInfo, List<Request> requests)
{
try {
var builder = new RouteBuilder(vehicleInfo);
var routes = builder.Build(Depots, vehicleInfo, requests).ToList();
String foundRoutes = "";
String totalDistance = "";
foundRoutes += string.Format("Found {0} routes", routes.Count()) + Environment.NewLine + Environment.NewLine;
foreach (var route in routes) {
foundRoutes += string.Join(" -> " + Environment.NewLine, route.GetTimeTable().Select(checkPoint => "[Ar = " + checkPoint.ArrivalTime + " Loc = " + checkPoint.Location.X + " " + checkPoint.Location.Y + "[" + checkPoint.LocationID + "]" + " Route ID = " + route.Venicle.Id + "]")) + Environment.NewLine;
foundRoutes += "vehicle distance: " + route.GetTotalDistance() + Environment.NewLine;
foundRoutes += Environment.NewLine;
}
Console.WriteLine(foundRoutes);
totalDistance += "Total distance: " + routes.Sum(r => r.GetTotalDistance()) + Environment.NewLine;
totalDistance += Environment.NewLine;
Console.WriteLine(totalDistance);
} catch (ImpossibleRouteException exception) {
String failedServeRequest = "";
String routesWithoutRequests = ""; ;
failedServeRequest = "Can not serve requests:" + Environment.NewLine;
foreach (var request in exception.ImpossibleRequests) {
failedServeRequest += "Loc = " + request.Location.X + " " + request.Location.Y + Environment.NewLine;
}
failedServeRequest += Environment.NewLine;
Console.WriteLine(failedServeRequest);
routesWithoutRequests += "Routes without these requests:" + Environment.NewLine;
Console.WriteLine(routesWithoutRequests);
TryServe(Depots, vehicleInfo, requests.Except(exception.ImpossibleRequests).ToList());
} catch (Exception exception) {
Console.WriteLine(exception.Message);
}
}
public RouteBuilder(VehicleInfo venicleInfo)
{
_venicleInfo = venicleInfo;
}
