this was a quiz question on cf weekly
http://coldfusionweekly.com/index.cfm?event=showCFQuiz
Version 2.13 April 23, 2007
there are 6 responces thst you can review
On 7/26/07, Maximilian Nyman <[EMAIL PROTECTED]> wrote:
>
> You don't actually need to use the StructKeyExists though
> I would take what Russ said and rewrite the function to this:
>
> function getRandomNumberArray(length, count) {
> var min = "1" + repeatString("0", length - 1);
> var max = repeatString("9", length);
> var uniquer = structNew();
> while (structCount(uniquer) LT count) {
> uniquer[randRange(min, max)] = "";
> }
> return StructKeyArray(uniquer);
> }
>
> Or you could return the StructKeyList(uniquer), if you rather have the
> Random numbers in a list
>
> /Max
>
> On 7/26/07, Ben Nadel <[EMAIL PROTECTED]> wrote:
> > Barney, I love the 1XYZ-N technique for the length constraint That's
> > damn brilliant!
> >
> > ......................
> > Ben Nadel
> > Certified Advanced ColdFusion MX7 Developer
> > www.bennadel.com
> >
> > Need ColdFusion Help?
> > www.bennadel.com/ask-ben/
> >
> > -----Original Message-----
> > From: Barney Boisvert [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, July 25, 2007 6:01 PM
> > To: CF-Talk
> > Subject: Re: Generate Random Number 1000 - No Duplicates
> >
> > I haven't tested this (just wrote it in the email), but it should be
> > close:
> >
> > function getRandomNumberArray(length, count) {
> > var min = "1" + repeatString("0", length - 1);
> > var max = repeatString("9", length);
> > var uniquer = structNew();
> > var result = arrayNew(1);
> > var num = "";
> > while (arrayLen(result) LT count) {
> > num = randRange(min, max);
> > if (NOT structKeyExists(uniquer, num)) {
> > uniquer[num] = "";
> > arrayAppend(result, num);
> > }
> > }
> > return result;
> > }
> >
> > cheers,
> > barneyb
> >
> >
>
>
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