Question on Pi

Hi all,

I'm looking for an algorithm that allows to calculate
a specific digit of Pi directly, whereas the only
parameter is the position of the digit.

e.g. f(2) = 4, f(3) = 1, ... and so on.
| |
int int

Does such an algorithm exist at all?
If yes, do you have a Java implementation by chance?

Thanks in advance,

Andre

.

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