static void Main(string[] args)
{
SubwayMap graph = new SubwayMap();
unDirectedGraph <String> Task1 = new unDirectedGraph <String>();
unDirectedGraph <String> Task2 = new unDirectedGraph <String>();
Task1 = graph.fast();
Task2 = graph.critical();
Console.WriteLine("Task 1: Fastest Route\nVertexA\tVertexB\tColour\n=======================================\n");
Task1.Print();
Console.ReadKey();
Console.WriteLine("Task 2: Articulation Points\nVertexA\tVertexB\tColour\n=======================================\n");
Task2.Print();
Console.ReadKey();
Console.WriteLine("Fastest Route");
Console.WriteLine("Graph: fast");
Task1.Fastest("Node1", "Node4");
Console.ReadKey();
Console.WriteLine("\nGraph: critical");
Task2.Fastest("A", "Z");
Console.ReadKey();
Console.WriteLine("\nArticulation Points\nGraph: fast");
Task1.CriticalStation();
Console.ReadKey();
Console.WriteLine("\nGraph: critical");
Task2.CriticalStation();
Console.ReadKey();
}
// Returns false if at any point of parsing the input from the file error occurs (for example, wrong data or station/command not found)
static bool ParseFileAndEvaluate()
{
// Create an instance of SubwayMap
SubwayMap map = new SubwayMap();
// Stores the path to the file
string filePath;
try
{
filePath = Directory.GetCurrentDirectory();
} catch (UnauthorizedAccessException)
{
Console.WriteLine("Cannot access the directory.");
return(false);
}
// Add a file name
filePath += "\\input.txt";
// If file doesn't exist, exit method
if (!File.Exists(filePath))
{
Console.WriteLine("The file does not exist or permission is denied.");
return(false);
}
// Read the file using StreamReader
StreamReader reader = new StreamReader(filePath);
// Line counter
int counter = 1;
// If can't get the number of stations, stop reading file
if (!Int32.TryParse(reader.ReadLine(), out int numberStations))
{
Console.WriteLine("Error on line {0}: Number of stations is not defined.", counter);
return(false);
}
counter++;
// Try to read station names
for (int index = 0; index < numberStations; index++)
{
// If can't read the next station's name, stop
string name;
if ((name = reader.ReadLine()) == null)
{
Console.WriteLine("Error on line {0}: Not enough stations defined.", counter);
return(false);
}
counter++;
// If the station's name contains a space, stop
if (name.Contains(" "))
{
Console.WriteLine("Error on line {0}: Station's name contains a space, which is not allowed.",
counter);
return(false);
}
map.InsertStation(name);
}
// If can't get the number of links, stop reading file
if (!Int32.TryParse(reader.ReadLine(), out int numberLinks))
{
Console.WriteLine("Error on line {0}: Number of links is not defined.", counter);
return(false);
}
counter++;
// Try to read links
for (int index = 0; index < numberLinks; index++)
{
// If can't read next link, stop
string link;
if ((link = reader.ReadLine()) == null)
{
Console.WriteLine("Error on line {0}: Not enough links defined.", counter);
return(false);
}
// If incorrect number of arguments, stop
string[] parts = link.Split(' ');
if (parts.Length != 3)
{
Console.WriteLine("Error on line {0}: Link is improperly defined.", counter);
return(false);
}
Color linkColor = GetColor(parts[2]);
if (linkColor == Color.None)
{
Console.WriteLine("Error on line {0}: Link color is incorrect.", counter);
return(false);
}
map.InsertLink(parts[0], parts[1], linkColor);
counter++;
}
// Validate the subway map, i.e. check that the map is connected
if (!map.IsConnected())
{
Console.WriteLine("Error on line {0}: The resultant map is not connected.", counter);
return(false);
}
// If can't get the number of operations, stop reading file
if (!Int32.TryParse(reader.ReadLine(), out int numberOperation))
{
Console.WriteLine("Error on line {0}: Number of operations is not defined.", counter);
return(false);
}
counter++;
// Try to read operations
for (int index = 0; index < numberOperation; index++)
{
// If can't read next line, stop
string operation;
if ((operation = reader.ReadLine()) == null)
{
Console.WriteLine("Error on line {0}: Not enough operations defined.", counter);
return(false);
}
// If incorrect number of arguments, stop
string[] parts = operation.Split(' ');
switch (parts.Length)
{
case 1:
// The only operation with no arguments is CriticalStations. The operation code is "CS"
if (parts[0].ToLower() != "cs")
{
Console.WriteLine("Error on line {0}: Operation code is incorrect.", counter);
return(false);
}
List <Station> criticalStations = map.CriticalStations();
Console.WriteLine("There are {0} critical stations:", criticalStations.Count);
foreach (Station station in criticalStations)
{
Console.WriteLine(station.Name);
}
Console.WriteLine();
break;
case 3:
// The only operation with two arguments is FastestRoute. The operation code is "FR"
if (parts[0].ToLower() != "fr")
{
Console.WriteLine("Error on line {0}: Operation code is incorrect.", counter);
return(false);
}
map.FastestRoute(parts[1], parts[2]);
Console.WriteLine();
break;
case 4:
// The only operation with three arguments is DeleteLink. The operation code is "DL"
if (parts[0].ToLower() != "dl")
{
Console.WriteLine("Error on line {0}: Operation code is incorrect.", counter);
return(false);
}
map.DeleteLink(parts[1], parts[2], GetColor(parts[3]));
Console.WriteLine();
// Check if the map is still connected
if (!map.IsConnected())
{
Console.WriteLine("Error on line {0}: After deletion, map is disconnected.", counter);
return(false);
}
break;
default:
Console.WriteLine("Error on line {0}: Operation is improperly defined.", counter);
return(false);
}
counter++;
}
return(true);
}
