/// <summary>
/// Find the shortest path between the two given currencies.
/// </summary>
public Path Solve(Currency from, Currency to)
{
shortestPath = new Path(from, to);
var fromNode = graph.FindNode(from);
var toNode = graph.FindNode(to);
if (fromNode != null && toNode != null)
{
Init(fromNode);
Explore(toNode);
ConstructPath(fromNode, toNode);
}
return(shortestPath);
}