Example #1
0
        static void dfs(GraphVertex[] graph, int i, ref bool[] visited, ref ComponentIndex ci)
        {
            visited[i] = true;
            if (graph[i] == null)
            {
                graph[i] = new GraphVertex();
            }
            graph[i].componentIndex = ci;
            graph[i].componentIndex.verts.Add(i);

            foreach (int j in graph[i].neighbours)
            {
                if (!visited[j])
                {
                    dfs(graph, j, ref visited, ref ci);
                }
            }
        }
Example #2
0
        static void ReadInput(out GraphVertex[] graph, out Edge[] edges, out int[] removeEdges)
        {
            TextReader stream;

            if (File.Exists(FILENAME))
            {
                var fileStream = File.OpenRead(FILENAME);
                stream = new StreamReader(fileStream);
            }
            else
            {
                stream = Console.In;
            }

            var nc = stream.ReadLine().Split(' ');
            int n  = int.Parse(nc[0]);
            int c  = int.Parse(nc[1]);

            graph = new GraphVertex[n + 1];
            edges = new Edge[c + 1];

            for (int i = 1; i <= c; i++)
            {
                var edgeInput = stream.ReadLine().Split(' ');
                edges[i] = new Edge()
                {
                    start = int.Parse(edgeInput[0]), end = int.Parse(edgeInput[1])
                };

                AddEdge(ref graph, edges[i]);
            }

            int m           = int.Parse(stream.ReadLine());
            var removeInput = stream.ReadLine().Split(' ');

            removeEdges = new int[m];
            for (int i = 0; i < m; i++)
            {
                removeEdges[i] = int.Parse(removeInput[i]);
                RemoveEdge(ref graph, edges[removeEdges[i]]);
            }
        }