public Digraph reverse()
{
Digraph R = new Digraph(V);
for (int i = 0; i < V; i++)
{
foreach (int j in adj(i))
{
R.addEdge(j, i);
}
}
return(R);
}
private Digraph initDG()
{
Digraph g = new Digraph(13);
g.addEdge(4, 2);
g.addEdge(2, 3);
g.addEdge(3, 2);
g.addEdge(6, 0);
g.addEdge(0, 1);
g.addEdge(2, 0);
g.addEdge(11, 12);
g.addEdge(12, 9);
g.addEdge(9, 10);
g.addEdge(9, 11);
g.addEdge(8, 9);
g.addEdge(10, 12);
g.addEdge(11, 4);
g.addEdge(4, 3);
g.addEdge(3, 5);
g.addEdge(7, 8);
g.addEdge(8, 7);
g.addEdge(5, 4);
g.addEdge(0, 5);
g.addEdge(6, 4);
g.addEdge(6, 9);
g.addEdge(7, 6);
return(g);
}
