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Posted by The Natural Philosopher on 01/31/08 19:29
Fred wrote:
> Hi guys,
>
> I was wondering how could i get a random number exemple between 1 and
> 100 but with n% of getting some value over a number x.
>
> Thanks a lot in advance.
>
> Fred
Never mind Jerry, No one else does.
So you want a random number from a weighted distribution?
Your spec doesn't contain quite enough data to formulate the formula,
since there are an infinite number of distributions that have N% over
value X..
One example, is that you first of all get a random number between 0 and
100: If this is greater than N, then select a random number greater than
X, else select one less than X.
So in pseudo code where RAND(X) returns a number between 0 and X-1...
if ((RAND(100))<N) THEN RETURN RAND(X) ELSE RETURN(X+RAND(100-X));
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