[JS] Sorting an array and removing duplicates

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3 total messages Started by Rick_Quatro Wed, 28 Jan 2009 02:05

#1722

Author: Rick_Quatro
Date: Wed, 28 Jan 2009 02:05

3 lines
789 bytes

I am using a JavaScript array to store a series of page numbers, which I can store as strings or integers. I am looking for an algorithm to numerically sort the array and remove duplicates. Any suggestions would be appreciated.

Rick Quatro

Re: [JS] Sorting an array and removing duplicates

#1723

Author: Peter Kahrel
Date: Wed, 28 Jan 2009 02:20

21 lines
931 bytes


sort_pages (array)

function sort_pages (array) 
   { 
   var str = array.sort (sortnum).join ('\r')+'\r'; 
   str = str.replace (/([^\r]+\r)(\1)+/g,'$1'); 
   str = str.replace (/\r$/,''); 
   str = str.split ('\r'); 
   return str 
   }

function sortnum (a, b) 
   { 
   return a > b 
   }



Peter

Re: [JS] Sorting an array and removing duplicates

#1730

Author: Rick_Quatro
Date: Wed, 28 Jan 2009 13:23

5 lines
798 bytes

Hi Peter,

Very nice. I had to change the return value on the sortnum function to a - b to get the correct sort order, but otherwise it worked great. Thank you very much for your generous help.

Rick

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