private static void Visit(IVertex node, ColorsSet colors,
TimestampSet discovery, TimestampSet finish, LinkedList<IVertex> list, ref int time)
{
colors.Set(node, VertexColor.Gray);
discovery.Register(node, time++);
foreach(IVertex child in node.Adjacencies)
{
if (colors.ColorOf(child) == VertexColor.White)
{
Visit(child, colors, discovery, finish, list, ref time);
}
}
finish.Register(node, time++);
#if DEBUG
Debug.Assert(discovery.TimeOf(node) < finish.TimeOf(node));
#endif
list.AddFirst(node);
colors.Set(node, VertexColor.Black);
}
public static IVertex[] Sort(IVertex[] graphNodes)
{
ColorsSet colors = new ColorsSet(graphNodes);
TimestampSet discovery = new TimestampSet();
TimestampSet finish = new TimestampSet();
LinkedList list = new LinkedList();
int time = 0;
foreach(IVertex node in graphNodes)
{
if (colors.ColorOf(node) == VertexColor.White)
{
Visit(node, colors, discovery, finish, list, ref time);
}
}
return (IVertex[]) list.ToArray(typeof(IVertex));
}
public static IVertex[] Sort(IVertex[] graphNodes)
{
ColorsSet colors = new ColorsSet(graphNodes);
TimestampSet discovery = new TimestampSet();
TimestampSet finish = new TimestampSet();
LinkedList<IVertex> list = new LinkedList<IVertex>();
int time = 0;
foreach(IVertex node in graphNodes)
{
if (colors.ColorOf(node) == VertexColor.White)
{
Visit(node, colors, discovery, finish, list, ref time);
}
}
IVertex[] vertices = new IVertex[list.Count];
list.CopyTo(vertices, 0);
return vertices;
}
private static void Visit(IVertex node, ColorsSet colors, TimestampSet discovery, TimestampSet finish, LinkedList <IVertex> list, ref int time)
{
colors.Set(node, VertexColor.Gray);
discovery.Register(node, time++);
foreach (var child in node.Adjacencies)
{
if (colors.ColorOf(child) == VertexColor.White)
{
Visit(child, colors, discovery, finish, list, ref time);
}
}
finish.Register(node, time++);
Debug.Assert(discovery.TimeOf(node) < finish.TimeOf(node));
list.AddFirst(node);
colors.Set(node, VertexColor.Black);
}
public static IVertex[] Sort(IVertex[] graphNodes)
{
var colors = new ColorsSet(graphNodes);
var discovery = new TimestampSet();
var finish = new TimestampSet();
var list = new LinkedList <IVertex>();
var time = 0;
foreach (var node in graphNodes)
{
if (colors.ColorOf(node) == VertexColor.White)
{
Visit(node, colors, discovery, finish, list, ref time);
}
}
var vertices = new IVertex[list.Count];
list.CopyTo(vertices, 0);
return(vertices);
}