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Natural sort or Alphanumeric sort algorithm

Posted on 2011-02-20
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Last Modified: 2013-12-18
Hi

Has anyone worked on Natural Sorting or Alphanumeric sorting of given list. I am planning to write a lotus script code for this, but would like to know the algorithm or technique for such a sort.


Regards
Javed Khan
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Question by:javakthar
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6 Comments
 
LVL 37

Expert Comment

by:TommySzalapski
ID: 34940420
Just use merge sort or insertion sort or whatever your favorite standard sorting algorithm.
The only extra thing you need to do is to write your own less than function. Just parse the string and if you see a number, count the digits first (or extract them, convert to integer and compare).
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LVL 22

Expert Comment

by:mbonaci
ID: 34941170
You can use QuickSort/InsertionSort (balanced combination) located in your mail db > form Group > action "Sort members list" calls > QuickSort in form's Globals
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Accepted Solution

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javakthar earned 0 total points
ID: 34958305
I referred to Dave Koells Algorithm for Alphanumeric Sorting and have created a similar functionality in Lotus Script, with some changes. With this i am now able to do the required alphanumeric sorting.

Any facing similar problem can get in touch with me for the code.
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LVL 22

Expert Comment

by:mbonaci
ID: 34958880
If you want to publish the code you can do that here and/or (even better) on openNTF.
I'm sure it'll be of good use to someone.
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Author Comment

by:javakthar
ID: 34985349
Here is the alphanumeri comparison code.  This can be used in any of the sorting methods such as quick sort , selection sort or any other.

This code can be inroduced at the point where the comparison is being done.

I could not access this site for couple of days, hence the delay.
Alphanum.txt
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Author Closing Comment

by:javakthar
ID: 34990909
There are various scenarios for testing the complete functioning of alphanumeric sorts. My code works well in the scenarios which i have tested so far. It could fail in some unknown scenarios.
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