lossless compression algorithm is LDS (lossless data-compression sources) of KIT. I found so many people want a compression software source code, but they are difficult to find.

无损压缩算法代码包
..................\compress.zip
..................\huf.zip
..................\huff_file.zip
..................\huff_stream.zip
..................\lz77.zip
..................\lzw.zip
..................\rlezip_16bit_sc.zip
..................\rle_zip_8bit.zip

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