public static NodeCollection hieu(NodeCollection nodes1, NodeCollection nodes2) { if (nodes1.Count > nodes2.Count) { NodeCollection result = new NodeCollection(); foreach (Node node in nodes1) { if (!nodes2.Contains(node)) { result.Add(node); } } if (result.Count > 0) { return(result); } else { return(null); } } return(null); }
void khoitao() { _edgeList = new EdgeCollection(); _nodeList = new NodeCollection(); this.IsUndirected = false; }