private PathFinder MakePathFinder(string graph)
{
var pf = new PathFinder();
var edgePattern = new Regex("(\\D+)(\\D+)(\\d+)");
var edges = graph.Split(',');
foreach (var edge in edges)
{
if (edgePattern.IsMatch(edge))
{
var begin = edgePattern.Replace(edge, "$1");
var end = edgePattern.Replace(edge, "$2");
var length = int.Parse(edgePattern.Replace(edge, "$3"));
pf.AddEdge(begin, end, length);
}
}
pf.FindPath("A", "Z");
return(pf);
}