Introduction - If you have any usage issues, please Google them yourself
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.