和树类似，图的遍历是图的一种主要操作，可以通过遍历判别图中任意两个顶点之间是否存在路径、判别给定的图是否是连通图并可求得非连通图的各个连通分量，但对于带权图（网），其最小生成树或最短路径都取决于弧或边上的权值，则需要有特定的算法求解。-and similar trees, graph traversal map is a major operation, Discrimination can traverse map between any two vertices existence trails Discriminant to whether the map graph may seek non - graph the various connectivity components, but with the right plan (net), the minimum spanning tree or shortest path depends on the edge of the arc or the right values, the need for a specific algorithm.