介绍了 gzip压缩包的格式，根据压缩包格式提供了检测二进制为gzip压缩数据的方法-Introduced a package gzip compression format, in accordance with compressed format detection kits for gzip compressed binary data

filter过滤器应用，gzip压缩，测试百度页面，谷歌页面，和自己的应用页面，二进制文本等压缩率-filter filter applications, gzip compression, test Baidu page, Google pages, and their application pages, text and other binary compression

利用堆、霍夫曼树、二叉树遍历等知识点，编写文本压缩程序，实现文本文件的压缩与解压功能-Using heap, Hoffman tree, binary tree traversal and other knowledge, text compression program, realize a text file compression and decompression functions