compress 1000 bytes of data to 100 bytes

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.NET3.5

.NET

Hi,
I dont want zipfile I want to compress 1000 bytes of data to 100 bytes how can we do this plz help me

Posted 4-Mar-11 17:35pm

ShivaBaba

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OriginalGriff · Answer 1 · 2011-03-06T21:09:00

Solution 4

It is actually quite simple: throw away all the zero bits. Since they don't represent anything, you can discard them without any problems.

In addition, stop posting the same question with different numbers, and then deleting it when it is answered!

Posted 6-Mar-11 21:09pm

OriginalGriff

Sergey Alexandrovich Kryukov · Answer 2 · 2011-03-04T17:52:00

Is is a joke? Use simple logic. Still not getting it?

OK, nobody can help you.
Yes, in a special case you can pack 1000 in approximately 100 bytes, depending on algorithm, a little better or much worse, but this is when all the data consists of equal bytes! It all depends on input data. Even it you want to compress by 10%, nobody can guarantee you this result for arbitrary data.

I don't have a heart to try to explain it. If it was not obvious to you in first place…
Did you used zip before? Ever interested to know why lost-less compression is even possible? I was simply shocked by this question. Tell me, again, was that a joke?

—SA

Debojyoti Majumder · Answer 3 · 2011-03-04T20:35:00

Solution 3

Target compression size can not be deterministic or can not be fixed.
To me Hoffman compression algorithm works pretty well for me.

To implement the algorithm this link might be useful:
http://www.daniweb.com/code/snippet216267.html[^]

The target compression size depends on the Algorithm and the Input pattern.

Posted 4-Mar-11 20:35pm

Debojyoti Majumder

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Sergey Alexandrovich Kryukov 5-Mar-11 19:31pm

A point about deterministic size of good of course, but I already answered in other words.
Hoffman compression does work, but... did you do estimate? (I did.) 1000 to 100 -- in practice, no chance! Please see my Answer and comments or try it out and report you results, if you're curious.
--SA