Random number

Which parts don't you understand?

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Adam

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;
}
return s;
}

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)

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.

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

Thanks