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One of the RC principals wanted to hear about the big secret here.

Happily, I can disclose it in *one* slide!

Suppose the array has

*N*slots and the key is*K*Seed a PRNG with

*K*(pseudo-random number generator)Extract a random number

*R**I*=*R*mod*N*

Theorem:

If you don't know what the keys will be…

…a random array index gives the best possible performance

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