Introduction - If you have any usage issues, please Google them yourself
(1) According to the character of the establishment of a Huffman tree and thus obtain Huffman coding, while Huffman coding into hfmTree.txt file. (2) the use of well-established Huffman encoding to the given document, while deposit CodeFile.txt file. (3) the use of Huffman coding tree and the password file CodeFile.txt decoding. Required to decode the file while the 50 word line of output, and output decoded file.