Algorithm Specification There are four people who want to cross a rickety b same side. You have 17 minutes to get them all across to the ot they have one flashlight. A maximum of two people can cross t party that crosses, either one or two people, must have the flas

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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Algorithm Specification
There are four people who want to cross a rickety bridge; they all begin on the
same side. You have 17 minutes to get them all across to the other side. It is night, and
they have one flashlight. A maximum of two people can cross the bridge at one time. Any
party that crosses, either one or two people, must have the flashlight with them. The
flashlight must be walked back and forth; it cannot be thrown, for example. Person 1
takes 1 minute to cross the bridge, person 2 takes 2 minutes, person 3 takes 5 minutes,
and person 4 takes 10 minutes. A pair must walk together at the rate of the slower
person's pace.
Write the specification of an algorithm that solves the problem.
Transcribed Image Text:Algorithm Specification There are four people who want to cross a rickety bridge; they all begin on the same side. You have 17 minutes to get them all across to the other side. It is night, and they have one flashlight. A maximum of two people can cross the bridge at one time. Any party that crosses, either one or two people, must have the flashlight with them. The flashlight must be walked back and forth; it cannot be thrown, for example. Person 1 takes 1 minute to cross the bridge, person 2 takes 2 minutes, person 3 takes 5 minutes, and person 4 takes 10 minutes. A pair must walk together at the rate of the slower person's pace. Write the specification of an algorithm that solves the problem.
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