/**
* Returns a list of vertices that are the neighbors of a specified vertex. If the graph is a
* multigraph vertices may appear more than once in the returned list.
*
* <p>
* The method uses {@link Graph#edgesOf(Object)} to traverse the graph.
*
* @param g the graph to look for neighbors in
* @param vertex the vertex to get the neighbors of
* @param <V> the graph vertex type
* @param <E> the graph edge type
*
* @return a list of the vertices that are the neighbors of the specified vertex.
*/
public static List <V> neighborListOf <V, E>(Graph <V, E> g, V vertex)
{
List <V> neighbors = new List <V>();
foreach (E e in g.edgesOf(vertex))
{
neighbors.Add(getOppositeVertex(g, e, vertex));
}
return(neighbors);
}