public CPM(int N, List <string> edgeText)
{
var g = new EdgeWeightedDigraph(2 * N + 2);
int s = 2 * N, t = 2 * N + 1;
for (int i = 0; i < N; i++)
{
var e = edgeText[i].Split(' ');
double duration = Convert.ToDouble(e[0]);
g.AddEdge(new DirectedEdge(i, i + N, duration));
g.AddEdge(new DirectedEdge(s, i, 0.0));
g.AddEdge(new DirectedEdge(i + N, t, 0.0));
for (int j = 1; j < e.Length; j++)
{
int successor = Convert.ToInt32(e[j]);
g.AddEdge(new DirectedEdge(i + N, successor, 0.0));
}
}
AcylicSP acy = new AcylicSP(g, s, AcylicSP.PathType.Lagrest);
Console.WriteLine("start\ttimes");
for (int i = 0; i < N; i++)
{
Console.WriteLine($"{i}\t{acy.DistTo[i]}");
}
Console.WriteLine($"Total Times:{acy.DistTo[t]}");
}
private void FindNegativeCycle()
{
int v = _edgeTo.Length;
EdgeWeightedDigraph spt = new EdgeWeightedDigraph(v);
for (int s = 0; s < v; s++)
{
if (_edgeTo[s] != null)
{
spt.AddEdge(_edgeTo[s]);
}
}
EdgeWeightedCycleFinder finder = new EdgeWeightedCycleFinder(spt);
_cycle = finder.Cycle;
}
static void Main(string[] args)
{
EdgeWeightedDigraph g = new EdgeWeightedDigraph(8);
g.AddEdge(new DirectedEdge(4, 5, 0.35));
g.AddEdge(new DirectedEdge(5, 4, 0.35));
g.AddEdge(new DirectedEdge(4, 7, 0.37));
g.AddEdge(new DirectedEdge(5, 7, 0.28));
g.AddEdge(new DirectedEdge(7, 5, 0.28));
g.AddEdge(new DirectedEdge(5, 1, 0.32));
g.AddEdge(new DirectedEdge(0, 4, 0.38));
g.AddEdge(new DirectedEdge(0, 2, 0.26));
g.AddEdge(new DirectedEdge(7, 3, 0.39));
g.AddEdge(new DirectedEdge(1, 3, 0.29));
g.AddEdge(new DirectedEdge(2, 7, 0.34));
g.AddEdge(new DirectedEdge(6, 2, 0.40));
g.AddEdge(new DirectedEdge(3, 6, 0.52));
g.AddEdge(new DirectedEdge(6, 0, 0.58));
g.AddEdge(new DirectedEdge(6, 4, 0.93));
DijkstraSP dsp = new DijkstraSP(g, 0);
Console.WriteLine("DijkstraSP");
foreach (var e in dsp.PathTo(6))
{
Console.WriteLine($"{e} ");
}
var edges = new List <string>()
{
"41 1 7 9",
"51 2",
"50",
"36",
"38",
"45",
"21 3 8",
"32 3 8",
"32 2",
"29 4 6"
};
var cpm = new CPM(10, edges);
var dedges = new List <string>()
{
"4 5 0.35",
"5 4 -0.66",
"4 7 0.37",
"5 7 0.28",
"7 5 0.28",
"5 1 0.32",
"0 4 0.38",
"0 2 0.26",
"7 3 0.39",
"1 3 0.29",
"2 7 0.34",
"6 2 0.40",
"3 6 0.52",
"6 0 0.58",
"6 4 0.93"
};
int N = 8;
EdgeWeightedDigraph spt = new EdgeWeightedDigraph(N);
for (int i = 0; i < N; i++)
{
var e = dedges[i].Split(' ');
double duration = Convert.ToDouble(e[e.Length - 1]);
int v = Convert.ToInt32(e[0]);
int w = Convert.ToInt32(e[1]);
spt.AddEdge(new DirectedEdge(v, w, duration));
}
BellmanFordSP bsp = new BellmanFordSP(spt, 0);
Console.WriteLine(bsp.HasNegativeCycle());
Console.WriteLine("Hello World!");
}
