private DepthFirstSearch CreateDFS() { Graph graph = new Graph(8); graph.AddEdge(0, 2); graph.AddEdge(2, 1); graph.AddEdge(2, 3); graph.AddEdge(3, 4); graph.AddEdge(3, 5); graph.AddEdge(6, 7); return(DepthFirstSearch.Create(graph, 5)); }