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Okay, so anyone want to report on this one (untested, but should be rather efficient):
This algorithm assumes that every item in the exclusion list is included in the master list, that there are no duplicate items in either list, and that both lists are in ascending numeric order:
put empty into targetList
put (excludeList & cr & 100000000000000000) into eCopy -- use some absurdly huge
-- number, guaranteed to not be in either list, and to be larger than the largest possible
-- number in either list
put 1 into z
repeat for each line x in masterList
if x < (line z of eCopy) then put (x & cr) after targetList
else add 1 to z
end repeat
delete the last char of targetList
On Apr 4, 2005, at 10:27 AM, Jim Hurley wrote:
Message: 6 Date: Sun, 03 Apr 2005 22:04:54 -0500 From: Ken Ray <[EMAIL PROTECTED]> Subject: How to get the difference between two lists? To: Use Revolution List <[email protected]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII"
I've got two lists - one with is the "comprehensive" list that is return-delimited, like: (snip)
Ken,
I wrote a short stack (non-pancake) a short time ago to deal with the multitude of e-mail list among the various volunteer groups in my community, extract duplicates, find common lines, etc.
It will generate the both the intersection and the union of any two lists. Don't know if this is any help but you can see with
go url "http://home.infostations.net/jhurley/CompareLists.rev";
Jim _______________________________________________ use-revolution mailing list [email protected] http://lists.runrev.com/mailman/listinfo/use-revolution
- ----------------------------------------------------------- Frank D. Engel, Jr. <[EMAIL PROTECTED]>
$ ln -s /usr/share/kjvbible /usr/manual
$ true | cat /usr/manual | grep "John 3:16"
John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
$
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