Assume the following method is added to the ArrayQueue class. What does this method do? public void undefined() {      if(size < 2) return;      if(size == capacity)             reallocate();      rear = (rear + 1)%capacity;      int f = (front + 1)%capacity;      theData[rear] = theData[f];      size++; }   Makes the front as rear and the rear as front, if the number of elements in the queue is at least 2.   Adds the front element of the queue at the rear of the queue, if the number of elements in the queue is at least 2.   Adds the second element of the queue at the rear of the queue, if the number of elements in the queue is at least 2.   Exchanges the first and the last elements of the queue, if the number of elements in the queue is at least 2.

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
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Assume the following method is added to the ArrayQueue class. What does this method do?

public void undefined()

{

     if(size < 2) return;

     if(size == capacity)

            reallocate();

     rear = (rear + 1)%capacity;

     int f = (front + 1)%capacity;

     theData[rear] = theData[f];

     size++;

}

 
  1. Makes the front as rear and the rear as front, if the number of elements in the queue is at least 2.

     
  2. Adds the front element of the queue at the rear of the queue, if the number of elements in the queue is at least 2.

     
  3. Adds the second element of the queue at the rear of the queue, if the number of elements in the queue is at least 2.

     
  4. Exchanges the first and the last elements of the queue, if the number of elements in the queue is at least 2.

Assume the following method is added to the ArrayQueue class. What does this method do?
public void undefined()
{
if(size < 2) return;
if(size
сараcity)
==
reallocate();
rear = (rear + 1)%capacity;
int f = (front + 1)%capacity;
theData[rear] = theData[f];
size++;
}
Makes the front as rear and the rear as front, if the number of elements in the queue is at least
A
2.
Adds the front element of the queue at the rear of the queue, if the number of elements in the
queue is at least 2.
Adds the second element of the queue at the rear of the queue, if the number of elements in the
queue is at least 2.
Exchanges the first and the last elements of the queue, if the number of elements in the queue
D
is at least 2
Transcribed Image Text:Assume the following method is added to the ArrayQueue class. What does this method do? public void undefined() { if(size < 2) return; if(size сараcity) == reallocate(); rear = (rear + 1)%capacity; int f = (front + 1)%capacity; theData[rear] = theData[f]; size++; } Makes the front as rear and the rear as front, if the number of elements in the queue is at least A 2. Adds the front element of the queue at the rear of the queue, if the number of elements in the queue is at least 2. Adds the second element of the queue at the rear of the queue, if the number of elements in the queue is at least 2. Exchanges the first and the last elements of the queue, if the number of elements in the queue D is at least 2
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