Your goal is to guess a secret integer between 1 and N. You repeatedly guess integers between 1 and N. After each guess you learn if your guess equals the secret integer (and the game stops). Otherwise, you learn if the guess is hotter (closer to) or colder (farther from) the secret number than your previous guess. Design an algorithm that finds the secret number in at most ~2 lg N guesses. Then design an algorithm that finds the secret number in at most ~ 1 lg N guesses.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Your goal is to guess a secret integer between 1 and N. You repeatedly guess integers between 1 and N. After each guess you learn if your guess equals the
secret integer (and the game stops). Otherwise, you learn if the guess is hotter (closer to)
or colder (farther from) the secret number than your previous guess. Design an algorithm that finds the secret number in at most ~2 lg N guesses. Then design an algorithm
that finds the secret number in at most ~ 1 lg N guesses.

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