编写了一个关于图的操作的应用程序，可以自己手动输入图的节点和节点的关系，然后可以进行查找节点，求节点的出度和入度，求最短的路径等-Prepared a map of the operation on the application, you can manually enter their own graph of the relationship between nodes and nodes, and then can search the node, and the out-degree