import java.io.*;
import java.util.*;
class Graph
{
private int V; // No. of vertices
private LinkedList adj[];
@SuppressWarnings("unchecked")
Graph(int v)
{
V = v;
adj = new LinkedList[v];
for (int i=0; i i = adj[v].listIterator();
while (i.hasNext())
{
int n = i.next();
if (!visited[n])
DFSUtil(n, visited);
}
}
void DFS(int v)
{
boolean visited[] = new boolean[V];
DFSUtil(v, visited);
}
public static void main(String args[])
{
Graph g = new Graph(4);
g.addEdge(0, 1);
g.addEdge(0, 2);
g.addEdge(1, 2);
g.addEdge(2, 0);
g.addEdge(2, 3);
g.addEdge(3, 3);
System.out.println("Following is Depth First Traversal "+
"(starting from vertex 2)");
g.DFS(2);
}
}