计算有向图的连通分支个数，文件读入，输出到控制台窗口。-Computing connected components of a directed graph the number of documents read, output to the console window.

连通图的最小生成树过程的图形动态演示。可以手动输入图，也可以自动生成图。-The minimum spanning tree of a connected graph process dynamic graphical presentation. Can manually enter, can also be generated automatically FIG.