Dijkstra提出按各顶点与源点v间的路径长度的递增次序，生成到各顶点的最短路径的算法。既先求出长度最短的一条最短路径，再参照它求出长度次短的一条最短路径，依次类推，直到从源点v 到其它各顶点的最短路径全部求出为止。-Dijkstra proposed by the vertex and the path between the source point v in increasing order of length, to generate the shortest path to each vertex the algorithm. Both first find the shortest length of a shortest path, then it is calculated with reference to a short length of time the shortest path, and so on, until the point from the source vertex v to each other all the calculate the shortest path so far.