Huffman压缩的全部代码实现，包括Huffman树的构建代码和Huffman编码的实现和获取，以及压缩和解压缩的文件读写，包括界面的实现，完整的实现了Huffman压缩-Huffman compression to achieve all the code, including the building code Huffman tree and Huffman coding implementation and acquisition, as well as compression and