void Start()
{
int s = 5;
EdgeWeightedDigraph G = new EdgeWeightedDigraph(txt);
// find shortest path from s to each other vertex in DAG
AcyclicSP sp = new AcyclicSP(G, s);
for (int v = 0; v < G.V(); v++)
{
if (sp.hasPathTo(v))
{
string str = (s + " to " + v + " ditance=" + sp.DistTo(v));
foreach (DirectedEdge e in sp.pathTo(v))
{
str += (" " + e);
}
print(str);
}
else
{
print(s + " to " + v + " no path\n");
}
}
}
public void Run()
{
Console.WriteLine("Choose file:"); // Prompt
Console.WriteLine("1 - tinyEWDAG.txt"); // Prompt
//Console.WriteLine("2 - mediumEWD.txt"); // Prompt
//Console.WriteLine("3 - mediumEWG.txt"); // Prompt
Console.WriteLine("or quit"); // Prompt
var fileNumber = Console.ReadLine();
string fileName;
switch (fileNumber)
{
case "1":
fileName = "tinyEWDAG.txt";
break;
//case "2":
// fileName = "mediumEWD.txt";
// break;
//case "3":
// fileName = "largeEWG.zip";
// break;
case "quit":
return;
default:
return;
}
var @in = new In($"Files\\Graphs\\{fileName}");
var lines = @in.ReadAllLines();
var lineIterator = 0;
var v = 0;
var e = 0;
var edges = new List <DirectedEdge>();
foreach (var line in lines)
{
if (lineIterator == 0)
{
v = Convert.ToInt32(line);
}
if (lineIterator == 1)
{
e = Convert.ToInt32(line);
}
if (lineIterator > 1)
{
var lineSplitted = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
var ve = Convert.ToInt32(lineSplitted[0]);
var we = Convert.ToInt32(lineSplitted[1]);
var weight = Convert.ToDouble(lineSplitted[2], CultureInfo.InvariantCulture);
var edge = new DirectedEdge(ve, we, weight);
edges.Add(edge);
}
lineIterator++;
}
var edgeWeightedDigraph = new EdgeWeightedDigraph(v, e, edges);
Console.WriteLine(edgeWeightedDigraph);
const int s = 5;
// find shortest path from s to each other vertex in DAG
var sp = new AcyclicSP(edgeWeightedDigraph, s);
for (var vi = 0; vi < edgeWeightedDigraph.V; vi++)
{
if (sp.HasPathTo(vi))
{
Console.Write($"{s} to {vi} {$"{sp.DistTo(vi):0.00}"} ");
foreach (var ei in sp.PathTo(vi))
{
Console.Write($"{ei} ");
}
Console.WriteLine();
}
else
{
Console.Write($"{s} to {vi} no path{Environment.NewLine}");
}
}
Console.ReadLine();
}