public static UndirectedGraph ReadFile(string path)
{
UndirectedGraph graph = new UndirectedGraph();
var s = System.IO.File.ReadAllLines(path);
foreach (var c in s)
{
if (!c.Contains('\t'))
{
throw new ArgumentException("Invalid format");
}
var nodes = c.Split('\t');
if (nodes.Length > 2)
{
throw new ArgumentException("Invalid format");
}
if (nodes[0].Contains('\t') || nodes[1].Contains('\t'))
{
throw new ArgumentException("Invalid format");
}
if (!graph.ContainsVertex(nodes[0]))
{
graph.AddVertex(nodes[0]);
}
if (!graph.ContainsVertex(nodes[1]))
{
graph.AddVertex(nodes[1]);
}
if (!graph.ContainsEdge(nodes[0], nodes[1]))
{
graph.AddEdge(nodes[0], nodes[1]);
}
}
return(graph);
}
public static UndirectedGraph ReadFile(string path)
{
UndirectedGraph ug = new UndirectedGraph();
string[] edges = File.ReadAllLines(path);
string[] temp;
for (int x = 0; x < edges.Length; x++)
{
temp = edges[x].Split(new char[] { ' ' });
if (temp.Length != 2 || temp[0] == null || temp[1] == null)
{
throw new ArgumentException("Invalid Format");
}
if (temp[0] == temp[1])
{
ug.AddVertex(temp[0]);
}
else
{
if (!ug.HasVertex(temp[0]))
{
ug.AddVertex(temp[0]);
}
if (!ug.HasVertex(temp[1]))
{
ug.AddVertex(temp[1]);
}
ug.AddEdge(temp[0], temp[1]);
}
}
return(ug);
}