10. Suppose you are given an implementation of a queue of integers. The operations tha can be performed on the queue are: i. isEmpty (Q) – returns true if the queue is empty, false otherwise. ii. delete (Q) – deletes the element at the front of the queue and returns its value. iii. insert (Q, i) – inserts the integer i at th rear of the queue. Consider the following function: void QUE(queue Q) { int i; if (!isEmpty(Q)) { i = delete(Q); QUE(Q); -

10. Suppose you are given an implementation of a queue of integers. The operations tha can be performed on the queue are: i. isEmpty (Q) – returns true if the queue is empty, false otherwise. ii. delete (Q) – deletes the element at the front of the queue and returns its value. iii. insert (Q, i) – inserts the integer i at th rear of the queue. Consider the following function: void QUE(queue Q) { int i; if (!isEmpty(Q)) { i = delete(Q); QUE(Q); -

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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Question

10. Suppose you are given an implementation
of a queue of integers. The operations that
can be performed on the queue are:
i. isEmpty (Q)– returns true if the queue
is empty, false otherwise.
ii. delete (Q) – deletes the element at the
front of the queue and returns its value.
iii. insert (Q, i) – inserts the integer i at the
rear of the queue.
Consider the following function:
void QUE(queue Q) {
int i ;
if (!isEmpty(Q)) {
i = delete(Q);
QUE(Q);
insert(Q, i);
}
}
What operation is performed by the
function QUE assuming the elements 1, 2,
3, 4 are in the queue ?
%D
Leaves the queue unchanged
Empties the queue Q
Reverse the order of the elements in
queue Q
Deletes the elements of the queue Q
from the front and inserts it at the rear of
the Queue Qkeeping the other elements
in the same Ogen

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