磁盘的基准测试程序，这是一个较为小型但标准的程序，值得分析。-disk benchmark tests, this is a relatively small but standard procedure, it is worth analysis.

本代码是算法设计课程里的哈夫曼树的查找及绘图实验- This code is in the algorithm design curriculum 鍝堝か鏇?tree s search and the cartography tests