这是用Java编写的考试模拟系统，只要将你想要考试的题用txt文件写好，放在同一目录下即可读出，但是还要设置里面的格式（参考我的吧）！-This is the test analogous system which compiles with Java, so long as wants you the test the topic to write with the txt document, places under the identical table of contents then

采用邻接矩阵实现有向网的存储，建立有向网，并实现单源最短路径算法。-Adjacency matrix are used to achieve the network storage, establishing the network, and to achieve single-source shortest path algorithm.