AJAX从入门到精通 第三章 程序源码。 水平和垂直居中的窗口-AJAX Mastering Chapter program source code. Horizontal and vertical center of the window

Dijkstra(迪杰斯特拉)算法是典型的单源最短路径算法，用于计算一个节点到其他所有节点的最短路径。主要特点是以起始点为中心向外层层扩展，直到扩展到终点为止。-Dijkstra (Dijkstra) algorithm is a typical single-source shortest path algorithm for computing the shortest path one node to all other nodes. The main features are the s

用于实现一个进行在线答疑的安卓客户端，需要登录后方能使用，回答和提问均可以获取积分，并可以在个人中心中查看积分排行榜和收到的回复，此外还提供问题收藏功能-For implementing a online Q Android client you need to log in before using, and questions can be answered earn points, and you can view the responses received in scoreboard