GraphsNew
代码说明:
A graph G = (V, E) consists of a set of vertices, V, and a set of edges, E, where each edge is a pair (v,w) s.t. v,w V Vertices are sometimes called nodes, edges are sometimes called arcs. If the edge pair is ordered then the graph is called a directed graph (also called digraphs) . We also call a normal graph (which is not a directed graph) an undirected graph. When we say graph we mean that it is an undirected graph.
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