Visual Basic, Sorting a large variable list VERY quickly.

Sorting a large variable list VERY quickly.

Author	Message
Julian Jimen #1 / 7	Sorting a large variable list VERY quickly. Does anyone know how to sort a very large array (over 10,000) into alphabetical order as quick as possible. An ideal solution would be to load them into an unlimited listbox with the 'sorted' proprty set to true, and then putting the sorted list back into the variable again. The only piece of code that I know of works fine with small lists(50-200) but anything larger and you would be in for a very long night! Anyone got any ideas ? -- Mr J.
Fri, 17 Oct 1997 03:00:00 GMT

Greg Daina #2 / 7	Sorting a large variable list VERY quickly. says... Quote: > Does anyone know how to sort a very large array (over 10,000) >into alphabetical order as quick as possible. <snip> I believe the latest issue of Visual Basic Programmers Journal has an article on sorting. It includes source code for a Quicksort that should handle your problem. -- Systems Analyst WWW: http://www.phoenix.net/USERS/getj
Sat, 18 Oct 1997 03:00:00 GMT

Vincent Wo #3 / 7	Sorting a large variable list VERY quickly. In this month's VB programmers journal, there's an article on sorting procedures. You might want to pick up a copy and give it a shot. Unfortunately, I haven't read the article yet, just looked at it and decided that I'd read it when I have to sort something. You know, you could put the items in a list box and have the list box sort them, and then write them back to a file, I've used that method and it seems to work fine, although I only had 500 items in it. : Does anyone know how to sort a very large array (over 10,000) : into alphabetical order as quick as possible. An ideal solution would : be to load them into an unlimited listbox with the 'sorted' proprty set : to true, and then putting the sorted list back into the variable again. : The only piece of code that I know of works fine with small : lists(50-200) but anything larger and you would be in for a very long : night! : Anyone got any ideas ? : : -- : Mr J. --------------------------------------------------------------------- : Internet Direct (416)233-2999 128 lines, SLIP, 9600 - 28,800 bps : ---------------------------------------------------------------------
Sat, 18 Oct 1997 03:00:00 GMT

Andrew Ma #4 / 7	Sorting a large variable list VERY quickly. (Julian Jimenez) says: Quote: > Does anyone know how to sort a very large array (over 10,000) >into alphabetical order as quick as possible. An ideal solution would >be to load them into an unlimited listbox with the 'sorted' proprty set >to true, and then putting the sorted list back into the variable again. Buy any good book on algorithms and you'll find quicksort and shellsort algorithms that'll do exactly what you want. Any professional programmer should have such a reference book, you won't regret it. Anyone out there care to name their favourite (Knuth is a little long in the tooth in that most of the code is in pseudo-assembler, though his books are still useful).
Sat, 18 Oct 1997 03:00:00 GMT

Dag Hauge #5 / 7	Sorting a large variable list VERY quickly. Quote: > Does anyone know how to sort a very large array (over 10,000) > into alphabetical order as quick as possible. An ideal solution would > be to load them into an unlimited listbox with the 'sorted' proprty set > to true, and then putting the sorted list back into the variable again. > The only piece of code that I know of works fine with small > lists(50-200) but anything larger and you would be in for a very long > night! > Anyone got any ideas ? VBIT (Visual Basic Invisible Tools) will do the job in a few seconds. Put the text strings into a VBIT table (up to 16k lines) and call ITabFastSort or ITabSmartSort. Sample code for reading a text file, sort it and write a new file: myTab& = ITabRead (fileIn$, IT_TEXTFILE) ITabFastSort myTab&, 1 res% = ITabWrite (myTab&, fileOut$, IT_TEXTFILE) That's all ! VBIT is shareware ($65) and can be downloaded from: ftp://ftp.vestnett.no/pub/pro/idb/ vbit120.zip http://www.vestnett.no/~idb/
Sat, 18 Oct 1997 03:00:00 GMT

teal #6 / 7	Sorting a large variable list VERY quickly. Quote: >says... >> Does anyone know how to sort a very large array (over 10,000) >>into alphabetical order as quick as possible. <snip> A quick sort is just what you need and they are easy to write. Watch out for samples that use a variant or floating point variable for their counters (speed counts here). If you really want some speed get the assembly versions using Crescent's QuickPak Pro or MicroHelp's Muscle. I prefer Crescent but they both offer very fast sorting.
Sat, 25 Oct 1997 03:00:00 GMT

Mani #7 / 7	Sorting a large variable list VERY quickly. Quote: > ... > Does anyone know how to sort a very large array (over 10,000) > into alphabetical order as quick as possible? > ... If you're trying to sort an array of strings, I have a quicksort DLL that will do that (very fast). Email me for the source if you want. Mani Visweswaran
Sat, 25 Oct 1997 03:00:00 GMT

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