Second, you could use this as a source of future randomness - for example, I will award you $x if the next eight bits out of the random generator represent 0-127, and will award the $x to me if they represent 128 or greater. This could be a great replacement for that, since you could write a rand() routine that accepts a start point in the chain and traverses forward to output random values on demand. A classic solution is to use a deterministic pseudo-random number generator that can be seeded, such that if it's seeded with the same number on two different runs, it will always generate the same output. There are two clear uses for this, and one anti-use.įirst, in scientific coding, one of the big challenges is in reproducing the results of a program that uses random numbers.
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