Random but unique

[tkuypers at pandora.be]

:-))
Thanks, this got me thinking and solved the problem... Didn't think of
removing the found line of my first var.

So simple, so easy...

Thanks!

Ton

> From: Dar Scott <dsc at swcp.com>
> Reply-To: use-revolution at lists.runrev.com
> Date: Sat, 11 Jan 2003 13:21:27 -0700
> To: use-revolution at lists.runrev.com
> Subject: Re: Random but unique
> 
> 
> On Saturday, January 11, 2003, at 12:52 PM, tkuypers at pandora.be wrote:
> 
>> Could you explain this? Removing values is not what I need, I need
>> these
>> values, or am I missing something...
>>> 
>>> Use a copy of the variable and remove values as pulled from the
>>> variable?
> 
> Off the top of my head:
> 
> -- function to return n random lines from a list
> -- with no line selected more than once
> function getUniqueRandomLines theList n
>   local theLines, pick
>   put empty into theLines
>   if n > the number of lines in theList then throw "Can't get random
> lines"
>   repeat for n times
>      put random( the number of lines in theList) into pick
>      put line pick & lineFeed after theLines
>      delete line pick of theList
>   end repeat
>   return theLines
> end if
> 
> This may not fit your exact needs, but perhaps it might inspire
> something that will.  This may have a speed problem with long lists, so
> I'm not completely happy with this.
> 
> Or did I miss something about this?
> 
> (I don't think "any" will work for the above method, unless some other
> method is used to remove the line.)
> 
> Dar Scott
> 
> 
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