文件压缩软件，利用哈弗曼树的特点，把文件里的内容描绘成一棵哈弗曼树，利用哈弗曼编码，来存储文件，从而达到了文件压缩的效果。-File compression software, tree characteristics Hafu Man, depicts the contents of the file into a Ha Fuman tree using Hafu Man coding, to store the file, so as to achieve the effect of fil