public bool DFSStack(GraphAM gph, int source, int target)
{
int count = gph.count;
bool[] visited = new bool[count];
Stack <int> stk = new Stack <int>();
stk.Push(source);
visited[source] = true;
while (stk.Count > 0)
{
int curr = stk.Pop();
List <Edge> adl = gph.Adj[curr];
foreach (Edge adn in adl)
{
if (visited[adn.dest] == false)
{
visited[adn.dest] = true;
stk.Push(adn.dest);
}
}
}
return(visited[target]);
}
public bool SearchBFS(GraphAM gph, int source, int target)
{
int count = gph.count;
bool[] visited = new bool[count];
Queue <int> que = new Queue <int>();
que.Enqueue(source);
visited[source] = true;
while (que.Count > 0)
{
int curr = que.Dequeue();
List <Edge> adl = gph.Adj[curr];
foreach (Edge adn in adl)
{
if (visited[adn.dest] == false)
{
visited[adn.dest] = true;
que.Enqueue(adn.dest);
}
}
}
return(visited[target]);
}
public bool dfs(GraphAM gph, int source, int target)
{
int count = gph.count;
bool[] visited = new bool[count];
dfsUtil(gph, source, visited);
return(visited[target]);
}
public void dfsUtil(GraphAM gph, int index, bool[] visited)
{
visited[index] = true;
List <Edge> adl = gph.Adj[index];
foreach (Edge adn in adl)
{
if (visited[adn.dest] == false)
{
dfsUtil(gph, adn.dest, visited);
}
}
}
static void Main(string[] args)
{
GraphAM graph = new GraphAM(5);
graph.AddDirectedEdge(1, 1, 3);
graph.AddDirectedEdge(0, 4, 2);
graph.AddDirectedEdge(1, 2, 1);
graph.AddDirectedEdge(2, 3, 1);
graph.AddDirectedEdge(4, 1, -2);
graph.AddDirectedEdge(4, 3, 1);
graph.Display();
WriteLine(graph.dfs(graph, 0, 2));
WriteLine(graph.SearchBFS(graph, 0, 2));
WriteLine(graph.DFSStack(graph, 0, 2));
ReadKey();
}