/// <summary>
/// Uses Prim's algorithm to build an MST spanning the mstNodes.
/// O(|mstNodes|^2) runtime.
/// </summary>
/// <param name="startIndex">The node index to start from.</param>
public void Span(int startIndex)
{
var edges = new FunctionalTwoDArray <DirectedGraphEdge>((a, b) => new DirectedGraphEdge(a, b, _distances[a, b]));
Span(startIndex, edges);
}
/// <summary>
/// Uses Prim's algorithm to build an MST spanning the mstNodes.
/// O(|mstNodes|^2) runtime.
/// </summary>
/// <param name="startIndex">The node index to start from.</param>
public void Span(int startIndex)
{
var edges = new FunctionalTwoDArray<DirectedGraphEdge>((a, b) => new DirectedGraphEdge(a, b, _distances[a, b]));
Span(startIndex, edges);
}