> gzip/gunzip ...compressed to 40.7%

I'm pretty sure that zip has some fix overhead which doesn't pay off with just 189 bytes input.

> my @code = map glob('{A,B,C}'x $_), 5, 2, 1;

I haven't run your code but it looks like you are mapping 9 possible chunks to a character needing a byte.

Looks like you are wasting space. Already a naive 4 bit per chunk approach, i.e 1 byte for two chunks would double your efficiency.° (Needless to say, Huffman even more) (Update: sorry I totally misunderstood how your glob works)

FWIW I doubt the input sample is realistic. Looks handmade by copying and altering the first line, hence the high redundancy. :)

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^2: How to efficently pack a string of 63 characters by LanX
in thread How to efficently pack a string of 63 characters by baxy77bax

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