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Topic: 1...N puzzle
Replies: 27   Last Post: Nov 7, 1999 6:36 AM

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Jon Haugsand

Posts: 26
Registered: 12/12/04
Re: 1...N puzzle
Posted: Nov 6, 1999 3:18 AM
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> I think the best guess is m = N/2 (integer) and then guess consecutive
> numbers from N/2 + 1 up to N and start from 1 to N.
> This way, if the hider's original guess is between N/2 and N then you hit it
> in less than N/2 times. However, if the original guess is less than N/2
> (integer) then total number of guesses is 1.5N.

Then you are guaranteed to end up with 1.5N. If you always start at 1
and carry upwards, you always end up with N guesses, clearly better.

Jon Haugsand
Norwegian Computing Center,
<mailto://> Pho: +47 22852608 / +47 22852500,
Fax: +47 22697660, Pb 114 Blindern, N-0314 OSLO, Norway

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