public static List <Tuple <int, int> > BFSwithTier(int startVertex, AdjacencyMatrixGraph g)
{
List <Tuple <int, int> > path = new List <Tuple <int, int> >();
bool[] visited = new bool[g.GetCountVertexes()];
Queue <Tuple <int, int> > q = new Queue <Tuple <int, int> >();
q.Enqueue(Tuple.Create(startVertex, 0));
visited[startVertex] = true;
path.Add(Tuple.Create(startVertex, 0));
while (q.Count != 0)
{
Tuple <int, int> pair = q.Dequeue();
int node = pair.Item1;
int tier = pair.Item2;
foreach (var child in g.GetNeighbors(node))
{
if (!visited[child])
{
q.Enqueue(Tuple.Create(child, tier + 1));
visited[child] = true;
path.Add(Tuple.Create(child, tier + 1));
}
}
}
return(path);
}
public static List <int> DFS(int startVertex, AdjacencyMatrixGraph g)
{
List <int> path = new List <int>();
bool[] visited = new bool[g.GetCountVertexes()];
Stack <int> s = new Stack <int>();
s.Push(startVertex);
visited[startVertex] = true;
path.Add(startVertex);
while (s.Count != 0)
{
int node = s.Peek();
bool flag = true;
foreach (var child in g.GetNeighbors(node))
{
if (!visited[child])
{
s.Push(child);
visited[child] = true;
path.Add(child);
flag = false;
break;
}
}
if (flag)
{
s.Pop();
}
}
return(path);
}
public static List <int> BFS(int startVertex, AdjacencyMatrixGraph g)
{
List <int> path = new List <int>();
bool[] visited = new bool[g.GetCountVertexes()];
Queue <int> q = new Queue <int>();
q.Enqueue(startVertex);
visited[startVertex] = true;
path.Add(startVertex);
while (q.Count != 0)
{
int node = q.Dequeue();
foreach (var child in g.GetNeighbors(node))
{
if (!visited[child])
{
q.Enqueue(child);
visited[child] = true;
path.Add(child);
}
}
}
return(path);
}
static void Graph1()
{
AdjacencyMatrixGraph g = new AdjacencyMatrixGraph(6);
g.AddEdge(0, 1); g.AddEdge(0, 2); g.AddEdge(1, 3);
g.AddEdge(1, 4); g.AddEdge(4, 5); //g.AddEdge(2, 4);
foreach (var pair in TraversalGraph.BFSwithTier(0, g))
{
Console.WriteLine("{0} - {1}", pair.Item1, pair.Item2);
}
Console.WriteLine();
foreach (var node in TraversalGraph.DFS(0, g))
{
Console.WriteLine(node);
}
}
static void Graph3()
{
AdjacencyMatrixGraph g = new AdjacencyMatrixGraph(6);
g.AddEdge(0, 5); g.AddEdge(1, 2); g.AddEdge(1, 4);
g.AddEdge(1, 5); g.AddEdge(2, 4); g.AddEdge(2, 5);
g.AddEdge(3, 4); g.AddEdge(4, 5);
Console.WriteLine("Обход графа в ширину: ");
Console.WriteLine();
foreach (var pair in TraversalGraph.BFSwithTier(0, g))
{
Console.WriteLine("{0} - {1}", pair.Item1, pair.Item2);
}
Console.WriteLine();
Console.WriteLine("Обход графа в глубину: ");
Console.WriteLine();
foreach (var node in TraversalGraph.DFS(0, g))
{
Console.WriteLine(node);
}
}