You've hit the problem right on the head, kensuke.
I believe he wants to give each viewer not just a random display from
the database, but a display that won't be repeated, as well.
Checking the random numbers off against a boolean array, would give him
what he wants, (together with your suggest
Why do you need to do all the permutation? if you have 7 users, you
need only 7 permutations, not 2**100.
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alpaul wrote:
> Now make the issue a bit simple, I jsut it is only 3 datas, which is A,
> B, C,
> According to the permutation rule, 2**3=6
>
> AB-AC-BA-BC-CA-CB
It's hard to figure out what you are saying 2**3 is 8, not 6. I think
you mean 2!=6.
>
> But it is enough for me to display on the w
