Kent and Bob,
Are you thinking of the first problem in Bentley's Programming Pearls?
The original poster's questions sounds like it could be in that domain.
http://netlib.bell-labs.com/cm/cs/pearls/cto.html
So I agree: the next questions we probably should ask the original poster:
* Why are you trying to search for a number in those sorted integers?
* Is there anything characteristic about those sorted integers that
might be peculiar or useful? Do the numbers have "streaks"? Are the
integers large or small?
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