add
Adds an edge between two nodes in the graph, and creates the nodes if they don't exist.
Parameters
node1
The starting node of the edge.
node2
The ending node of the edge.
weight
The weight of the edge, for example used to calculate distances with dijkstra.
Adds an unweighted edge between two nodes in the graph, and creates the nodes if they don't exist.
Parameters
node1
The starting node of the edge.
node2
The ending node of the edge.