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I'm not sure if the original request was for 7-bit compression or whether it's for text strings, which theoretically use values 32-127. If the latter, you can take six values ranging from 1-96 and compress them into a five byte 'chunk' since:
However, there my be better compression rates available depending on what you know about the data ahead of time. I know I spent a happy two or three weeks researching this (in the late 80's, using Borland's Turbo C) -- it's a very neat area to research. One more thought -- if you've got a large enough sample size, you can start to encode pairs ('en', 't ') or triplets ('en ', 'e, '). It's fun stuff. Alex / talexb / Toronto "Groklaw is the open-source mentality applied to legal research" ~ Linus Torvalds In reply to Re: Efficient 7bit compression
by talexb
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