winzip icon

Huffman Compression/Decompression

Email
Submitted on: 1/8/2015 3:20:00 PM
By: Fredrik Qvarfort (from psc cd)  
Level: Intermediate
User Rating: By 61 Users
Compatibility: VB 5.0, VB 6.0
Views: 6577
 
     This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

 
winzip iconDownload code

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. Afterdownloading it, you will need a program like Winzip to decompress it.Virus note:All files are scanned once-a-day by Planet Source Code for viruses, but new viruses come out every day, so no prevention program can catch 100% of them. For your own safety, please:
  1. Re-scan downloaded files using your personal virus checker before using it.
  2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
  3. Scan the source code with Minnow's Project Scanner

If you don't have a virus scanner, you can get one at many places on the net including:McAfee.com


Other 2 submission(s) by this author

 


Report Bad Submission
Use this form to tell us if this entry should be deleted (i.e contains no code, is a virus, etc.).
This submission should be removed because:

Your Vote

What do you think of this code (in the Intermediate category)?
(The code with your highest vote will win this month's coding contest!)
Excellent  Good  Average  Below Average  Poor (See voting log ...)
 

Other User Comments

3/17/2016 1:49:58 AMDavid Mendez

Function EncodeString() work
Function DecodeString() don't work.

Use 'Text' as undecoded string.
(If this comment was disrespectful, please report it.)

 

Add Your Feedback
Your feedback will be posted below and an email sent to the author. Please remember that the author was kind enough to share this with you, so any criticisms must be stated politely, or they will be deleted. (For feedback not related to this particular code, please click here instead.)
 

To post feedback, first please login.