Implement the basic operations in the index priority-queue API by modifying as follows: Change pq[] to hold indices, add an array keys[] to hold the key values, and add an array qp[] that is the inverse of pq[] — qp[i] gives the position of i in pq[] (the index j such that pq[j] is i). Then modify the code to maintain these data structures. Use the convention that qp[i] = -1 if i is not on the queue, and include a method contains() that tests this condition. You need to modify the helper methods exch() and less() but not sink() or swim(). Don't copy old answer its Wrong
Implement the basic operations in the index priority-queue API by modifying as follows: Change pq[] to hold indices, add an array keys[] to hold the key values, and add an array qp[] that is the inverse of pq[] — qp[i] gives the position of i in pq[] (the index j such that pq[j] is i). Then modify the code to maintain these data structures. Use the convention that qp[i] = -1 if i is not on the queue, and include a method contains() that tests this condition. You need to modify the helper methods exch() and less() but not sink() or swim(). Don't copy old answer its Wrong
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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Implement the basic operations in the
index priority-queue API by modifying as follows: Change
pq[] to hold indices, add an array keys[] to hold the key values, and add an array qp[]
that is the inverse of pq[] — qp[i] gives the position of i in pq[] (the index j such that
pq[j] is i). Then modify the code to maintain these data structures.
Use the convention that qp[i] = -1 if i is not on the queue, and include a method
contains() that tests this condition. You need to modify the helper methods exch()
and less() but not sink() or swim().
Don't copy old answer its Wrong
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