1）对给定的一份的文本文件，实现基于哈夫曼编码的文件压缩与解压操作。
2）该文件所包含的字符：26个字母的大小写、10种标点符号（一对双引号、一对单引号、冒号、逗号、分号、句号、问号以及感叹号）。
3）支持对以上业务实体内容的保存与打开等文件操作。(1) for a given text file, Huffman encoding file compression and decompression operation based on.

2) this document contains characters: 26 letters, 10 punctuation marks (of double quotes, a pair of single quotes, comma, colon, semicolon, full stop, question mark and exclamation mark).

3) documents to support the preservation of the above business entity content and open operation.)相关搜索： haffman
压缩