public static < N , E extends AEdge < N > > ADiGraph < N , E > create ( Collection < N > nodes , Collection < E > edges ) { final Object [ ] nodeArr = new Object [ nodes . size ( ) ] ; final AEdge [ ] edgeArr = new AEdge [ edges . size ( ) ] ; int idx = 0 ; for ( N node : nodes ) { nodeArr [ idx ] = node ; idx += 1 ; } idx = 0 ; for ( E edge : edges ) { edgeArr [ idx ] = edge ; idx += 1 ; } return new ADiGraph < N , E > ( nodeArr , edgeArr ) ; }
This factory method creates a graph with the given nodes and edges . It expressly allows nodes that have no edges attached to them .