<p><span style="color: rgb(69, 69, 69); font-family: Arial; font-size: 14px; line-height: 22px; white-space: pre-wrap;">Bob is a skilled engineer. He must design a highway that crosses a region with few villages. Since this region is quite unpopula…

<p>Because of the GFW (Great Firewall), we cannot directly visit many websites, such as Facebook, Twitter, YouTube, etc.&nbsp;But with the help of proxy and proxy server, we can easily get to these website.<o:p></o:p><br /> &nbs…

<p>编写一个算法，判断给定二叉树是否为二叉排序树。</p> <p></p>

<p>编写一个程序，用邻接表的形式存储下面这个图，要求以字典序递增存储。</p> <p><img src="/upload/201606/2_meitu_1(1).jpg" width="400" height="267" alt="" /></p> <p></p>

<p><span style="font-family: 'Times New Roman'; font-size: 14px;">　Have you ever heard the story of Blue.Mary, the great civil engineer? Unlike Mr. Wolowitz, Dr. Blue.Mary has accomplished many great projects, one of which is the Guanghua Building.…

<p>对于如图所示的一个带权有向图，采用迪克斯特拉算法求出从顶点0到其他各顶点的最短路径及其长度。</p> <p><img src="/upload/201606/2_meitu_1.jpg" width="400" height="267" alt="" /></p> <p></p>