>  using a single character to encode each group (@c) into a character, so it would use 9 characters (72) bits

Oh I see, but I hope you are aware that your approach can easily be packed into 9*6=54 bits and is easier to code than mine.

With a per line ratio of 7 bytes = 56 bits you'll already have a 50%+ compression.

My approach would require modulo 50 calculations on 51 bit integers, not sure how tricky this is on a 32 bit machine.

So I'd rather "waste" 5 bits/line for a pragmatic solution.

Btw: I'm reluctant trying to implement Huffman here, because the OP could probably change the parameters in his next post.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

In reply to Re^4: Data compression by 50% + : is it possible? by LanX
in thread Data compression by 50% + : is it possible? by baxy77bax

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