这是一个较完整的利用Huffman树进行编码的工程。可以实现读入数据，建立Huffman树，编码，输出编码到文件，及时翻译等功能。-This is a more complete use of Huffman coding tree works. Can read data, the establishment of Huffman tree, encoding, output encoding to file a timely translation and other functions.