there is no proved real random generator algorithm

Only sudo-random generator is available. 5000 non-repeating is not difficult.

If user is really not satisfied with general rand(), then use rand(timestamp) to generate a seed, and use CBC encryption to generate rest of numbers. Again the algorithm doesn't guarantee you anything, but you can use a silly search to find if there is any duplicated number. 5000 is not a big data.

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• Why you two are so serious about this. I was just -ppzcgg- ♀ (87 bytes) () 12/01/2006 postreply 19:48:52