基于哈夫曼的压缩和解压缩，将文本中的字符作为节点构建哈夫曼树，通过01来编码，实现对文件的压缩，同时通过逆过程将文件解压缩。-Based Huffman compression and decompression, the text of the character as a node Huffman tree constructed by 01 to coding, to achieve the file compression, through the reverse process to