perplexus.info :: Algorithms : Shrink needed

Shrink needed (Posted on 2006-10-18)

A file compressor is great for shrinking stored files, but it depresses me whenever I see a file grow instead of shrink. So what I am looking for is a file compression algorithm that never inflates any files, although it is allowed that some files (not all of course!) have the same length after "compression". Ideally it should work on files of all sizes, but I would be satisfied with a compressor that operates only on files larger than 1MB. Can you provide such an algorithm? No programming knowledge is required for this problem.

See The Solution Submitted by JLo

Rating: 3.6667 (6 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Provably impossible	Jort Bloem	2006-10-23 22:24:16
re(3): No impossibility -- doubt it	Federico Kereki	2006-10-23 08:17:13
re(3): Any compressor will do -- doubt it	Federico Kereki	2006-10-23 08:15:47
loopholes	Tristan	2006-10-22 17:22:30
re(2): No impossibility -- doubt it	vswitchs	2006-10-22 11:53:14
re(2): Any compressor will do -- doubt it	Art M	2006-10-22 03:53:01
A tricky way out	Federico Kereki	2006-10-21 14:34:11
re: Any compressor will do -- doubt it	Federico Kereki	2006-10-21 07:27:27
Any compressor will do	Art M	2006-10-21 03:00:50
re: No impossibility -- doubt it	Federico Kereki	2006-10-20 22:23:09
Thought on text compression	brianjn	2006-10-20 21:32:33
No impossibility	vswitchs	2006-10-20 16:50:57
Invent an impossibility?	brianjn	2006-10-20 11:30:45
No zipper exists	Old Original Oskar!	2006-10-20 09:41:12
Themes	brianjn	2006-10-20 09:31:24
Impossibility #3	e.g.	2006-10-20 08:23:45
Review	brianjn	2006-10-20 04:17:38
re: Ideas	Federico Kereki	2006-10-19 14:03:29
re(2): Ideas	Jer	2006-10-19 11:26:18
re: Ideas	Larry	2006-10-18 20:45:07
Impossibility #2	e.g.	2006-10-18 13:29:35
Ideas	Jer	2006-10-18 12:04:55
re: Impossibility?	Federico Kereki	2006-10-18 10:11:31
re: Impossibility?	brianjn	2006-10-18 09:41:19
Lightly Squeeze Me	brianjn	2006-10-18 09:30:57
Impossibility?	e.g.	2006-10-18 09:03:16

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (23)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info