Webmaster Forum / ColdFusion / Advanced Techniques / July 2007

Try this,
<cfdump var="#RandRange(1,4)##RandRange(1,4)##RandRange(1,4)##RandRange(1,4)#">

Thanks

I can't be sure, but I think he is trying to arrive at all of the UNIQUE
numbers that can be created with the digits 1,2,3 and 4.

If that is the case, the previous suggestion will not work. It will merely
return a random number where each of the four digits could be either 1,2,3 or
4. It would also generate duplicates from time to time.

If you're not too worried about pegging your server process, you could wrap it
all in if statements.  Write each value randomly generated to a table if it's
not found in the table.  Keep doing this until the table recordcount equals 24.
(God that's messy, on second thought don't listen to me)

Actually i looking for the permutation for the number i searching..  

I found out the function of algorithm to generate permutations frpm Wikipedia,
but no idea how to apply in CF script?

http://en.wikipedia.org/wiki/Permutation

Algorithm to generate permutations
For every number k () this following algorithm generates the corresponding
permutation of the initial sequence :

 function permutation(k, s) {
     var int factorial:= 1;
     for j= 2  to length(s) {
        factorial:= factorial* (j-1);        // factorial= (j-1)!
        swap s[j- ((k / factorial) mod j)] with s[j];
     }
     return s;
 }