public void CalcPath()
{
for (int i = 2; i <= _length; i++)
{
if (i == 2)
{
var paths = new List <List <int> >();
var edges = _graph.GetEdges();
foreach (var item in edges)
{
if (item.Start.Key < item.End.Key)
{
var path = new List <int>()
{
item.Start.Identifier,
item.End.Identifier
};
paths.Add(path);
}
}
_lengthPaths[i] = paths;
}
else
{
var paths = new List <List <int> >();
var prePaths = _lengthPaths[i - 1];
foreach (var prePath in prePaths)
{
var startVertex = _graph.GetVertexByKey(prePath[0]);
var startEdges = _graph.GetVertexEdge(startVertex);
foreach (var startEdge in startEdges)
{
var endVertex = startEdge.End;
if (!prePath.Contains(endVertex.Identifier))
{
var path = new List <int>(prePath);
path.Insert(0, endVertex.Identifier);
paths.Add(path);
}
}
}
_lengthPaths[i] = paths;
}
}
}