Imagine a ballroom with two kinds of dancers: leaders and followers. Dancers of both kinds wait in two separate queues before entering the dance floor. When a leader arrives, it checks to see if there is a follower waiting. If so, they can both proceed. Otherwise it waits. Similarly, when a follower arrives, it checks for a leader and either proceeds or waits, accordingly. Make sure that the next pair of leader/follower may dance only after the previous pair is done. Write the pseudocode for leaders and followers that enforces these constraints.
Imagine a ballroom with two kinds of dancers: leaders and followers. Dancers of both kinds wait in two separate queues before entering the dance floor. When a leader arrives, it checks to see if there is a follower waiting. If so, they can both proceed. Otherwise it waits. Similarly, when a follower arrives, it checks for a leader and either proceeds or waits, accordingly. Make sure that the next pair of leader/follower may dance only after the previous pair is done. Write the pseudocode for leaders and followers that enforces these constraints.
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
Section: Chapter Questions
Problem 1PE
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Imagine a ballroom with two kinds of dancers: leaders and followers. Dancers of both kinds wait in
two separate queues before entering the dance floor. When a leader arrives, it checks to see if there is
a follower waiting. If so, they can both proceed. Otherwise it waits. Similarly, when a follower
arrives, it checks for a leader and either proceeds or waits, accordingly. Make sure that the next pair
of leader/follower may dance only after the previous pair is done.
Write the pseudocode for leaders and followers that enforces these constraints.
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