How to answer the following questions screen shot show the text's arrayboundedqueue and the array unbounded queue The text's array-based queue is being used and holds a queue with a single element. We can say: A. the element is held at index 0. B. the value of front is -1 C. the value of front is one less than the value of rear. D. the value of front is equal to the value of rear.
How to answer the following questions screen shot show the text's arrayboundedqueue and the array unbounded queue The text's array-based queue is being used and holds a queue with a single element. We can say: A. the element is held at index 0. B. the value of front is -1 C. the value of front is one less than the value of rear. D. the value of front is equal to the value of rear.
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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How to answer the following questions
screen shot show the text's arrayboundedqueue and the array unbounded queue
The text's array-based queue is being used and holds a queue with a single element. We can say:
A. the element is held at index 0.
B. the value of front is -1
C. the value of front is one less than the value of rear.
D. the value of front is equal to the value of rear.
![public class ArravReuededQURUR<T> implements Queuelotertare<T>
{
protected final int DEFCAP = 100; // default capacity
protected TH elements;
// array that holds queue elements
protected int wMElenents = lin/ number of elements in this queue
protected int front = Qin
protected int ein
// index of front of queue
/ index of rear of queue
public AcravBevodedQueHAU
elements = (TI)) new Object[DEFCAP];
rear = DEFCAP - 1;
}
public ArravBouodedQveralint vaxsize)
{
elements = (T)) new Object[maxsie);
rear = VaxSize - 1;
}
public void enguRuelT element)
// Throws QyeyevertlowExsertien if this queue is full;
// otherwise, adds element to the rear of this queue.
{
if (İSEUW)
throw new QueveevertlowExcertieal"Enqueue attempted on a full queue.");
else
{
rear = (rear + 1) % elements leneth:
elements[rear] = element;
OwDElements = QDElements+ 1;
}
public T deguRue)
// Throws QueyeUoderflbwExsertien if this queue is empty;
// otherwise, removes front element from this queue and returns it.
if (iŞEmotu)
throw new QueuellodertlowExcertienl"Dequeue attempted on empty queue.");
else
{
T toReturn = elements[front];
elements[front] = null;
front = (front + 1) % elementsleneth:
wDElements = wmElements- 1;
return toRetua
}
}
public booleao isEMptx)
// Returns true
this queue is empty; otherwise, returns false.
{
return (qumElemAnts== 0);
public boelean İSEUW
// Returns true if this queue is full; otherwise, returns false.
{
return (QumElements== elementsleneth);
}
public int sizell
// Returns the number of elements in this queue.
{
return nymElements
}](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1b2c1e36-9974-49eb-8a0c-fe4d3c635f06%2Fe3fb3c68-0a73-475b-8767-f2fd77d1e7c9%2Fsqqb1il_processed.png&w=3840&q=75)
Transcribed Image Text:public class ArravReuededQURUR<T> implements Queuelotertare<T>
{
protected final int DEFCAP = 100; // default capacity
protected TH elements;
// array that holds queue elements
protected int wMElenents = lin/ number of elements in this queue
protected int front = Qin
protected int ein
// index of front of queue
/ index of rear of queue
public AcravBevodedQueHAU
elements = (TI)) new Object[DEFCAP];
rear = DEFCAP - 1;
}
public ArravBouodedQveralint vaxsize)
{
elements = (T)) new Object[maxsie);
rear = VaxSize - 1;
}
public void enguRuelT element)
// Throws QyeyevertlowExsertien if this queue is full;
// otherwise, adds element to the rear of this queue.
{
if (İSEUW)
throw new QueveevertlowExcertieal"Enqueue attempted on a full queue.");
else
{
rear = (rear + 1) % elements leneth:
elements[rear] = element;
OwDElements = QDElements+ 1;
}
public T deguRue)
// Throws QueyeUoderflbwExsertien if this queue is empty;
// otherwise, removes front element from this queue and returns it.
if (iŞEmotu)
throw new QueuellodertlowExcertienl"Dequeue attempted on empty queue.");
else
{
T toReturn = elements[front];
elements[front] = null;
front = (front + 1) % elementsleneth:
wDElements = wmElements- 1;
return toRetua
}
}
public booleao isEMptx)
// Returns true
this queue is empty; otherwise, returns false.
{
return (qumElemAnts== 0);
public boelean İSEUW
// Returns true if this queue is full; otherwise, returns false.
{
return (QumElements== elementsleneth);
}
public int sizell
// Returns the number of elements in this queue.
{
return nymElements
}
![public class ArcanboundedAvoue<T> implements QueueloterfagerT>
{
protected final ipt DEFCAP = 100; // default capacity
protected T) elements;
protected ipt origCAPAn // original capacity
protected ipt OHupableovots= // number of elements in this queue
protected ipt front = // index of front of queue
protected ipt ea
// array that holds queue elements
k
// index of rear of queue
public errayUgkouadodQHPUR
{
elements = () new Object[DEFCAP);
rear = DEFCAP - 1;
grisCaA- DEFCAP3;
}
public errayUakouadodQHPuRliot oriecCap
{
elements = (U) new Object[origCapl;
rear = origCAp 13;
thisocieGan- QrisCAP
}
private void enlareel)
Increments the capacity of the queue by an amount
/equal to the original capacity.
// create the larger array
U) larger = (TI) new Object[elerertslerethat orieCapl;
// copy the contents from the smaller array into the larger array
iot CHASalex = front;
{
larger[CHALArgad = elements[CHSmalock:
GOSPoaller = (suUSoallen+ 1) % eleneptslenetbs
// update instance variables
elements = larger;
front = 0;
rear = RHONElement 1;
}
public void ergueuolT element)
//
Adds element to the rear of this queue.
{
enlacgol);
rear = (rear + 1) % elenaptalanetbs
elements[rear] = element;
public T degueMo)
Throws QueuebnderlewEyceotianif this queue is empty;
I/ otherwise, removes front element from this queue and returns it.
{
if (iskpptul)
throw new Queuelladentlowyception"Dequeue attempted on empty queue.");
else
{
TteBetuF elements[front);
elements[front) = null;
front = (front + 1) % elepentaleretis
return toBeturo:
}
public beoleaniskpaptyl)
// Returns true if this queue is empty; otherwise, returns false.
{
return (ouEleovots== 0);
public beeleaniskulk)
Returns false - an unbounded queue is never full.
{
return false;
}
public ipt sizol)
// Returns the number of elements in this queue.
{
return RuOGleoent](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1b2c1e36-9974-49eb-8a0c-fe4d3c635f06%2Fe3fb3c68-0a73-475b-8767-f2fd77d1e7c9%2Fm3oi9y_processed.png&w=3840&q=75)
Transcribed Image Text:public class ArcanboundedAvoue<T> implements QueueloterfagerT>
{
protected final ipt DEFCAP = 100; // default capacity
protected T) elements;
protected ipt origCAPAn // original capacity
protected ipt OHupableovots= // number of elements in this queue
protected ipt front = // index of front of queue
protected ipt ea
// array that holds queue elements
k
// index of rear of queue
public errayUgkouadodQHPUR
{
elements = () new Object[DEFCAP);
rear = DEFCAP - 1;
grisCaA- DEFCAP3;
}
public errayUakouadodQHPuRliot oriecCap
{
elements = (U) new Object[origCapl;
rear = origCAp 13;
thisocieGan- QrisCAP
}
private void enlareel)
Increments the capacity of the queue by an amount
/equal to the original capacity.
// create the larger array
U) larger = (TI) new Object[elerertslerethat orieCapl;
// copy the contents from the smaller array into the larger array
iot CHASalex = front;
{
larger[CHALArgad = elements[CHSmalock:
GOSPoaller = (suUSoallen+ 1) % eleneptslenetbs
// update instance variables
elements = larger;
front = 0;
rear = RHONElement 1;
}
public void ergueuolT element)
//
Adds element to the rear of this queue.
{
enlacgol);
rear = (rear + 1) % elenaptalanetbs
elements[rear] = element;
public T degueMo)
Throws QueuebnderlewEyceotianif this queue is empty;
I/ otherwise, removes front element from this queue and returns it.
{
if (iskpptul)
throw new Queuelladentlowyception"Dequeue attempted on empty queue.");
else
{
TteBetuF elements[front);
elements[front) = null;
front = (front + 1) % elepentaleretis
return toBeturo:
}
public beoleaniskpaptyl)
// Returns true if this queue is empty; otherwise, returns false.
{
return (ouEleovots== 0);
public beeleaniskulk)
Returns false - an unbounded queue is never full.
{
return false;
}
public ipt sizol)
// Returns the number of elements in this queue.
{
return RuOGleoent
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