I use this method. Originally I used this to shuffle a deck of cards. <cfset ca = arrayNew(1) /> <cfloop from="1" to="20" index="i"> <cfset ca[i] = i /> </cfloop> <cfset i=1 /> <cfloop from="1" to="20" index="i"> <cfset ranDom = RandRange(1,arrayLen(ca)) /> <cfoutput>#ca[ranDom]#<br /></cfoutput> <cfset arrayDeleteAt(ca,ranDom) /> </cfloop>
Paul. On Sun, Dec 14, 2008 at 6:45 PM, Don L <[email protected]> wrote: > Man, I'm not having a good time with a seemingly simple problem, that is, > to generte a bunch of (say, 6) of unique numbers out of a range. Say, the > range is 20. > My current code technique is mainly to use a 'pool of numbers, each less > than 20', if found, try generate a number again (and here's the potential > problem, that is, you don't know if the newly generated number would be a > member of 'pool of numbers', so, one would have to run a check again... So, > for now, the code sometime produce one or even two duplication numbers. Do > you have a better way? > > Thanks. > > Don > Chunshen Li > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;207172674;29440083;f Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:316748 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
