Method to add an element in circular queue, Data Structure & Algorithms

Assignment Help:

Q. Let us consider a queue is housed in an array in circular fashion or trend. It is required to add new items to the queue. Write down a method ENQ to achieve this also check whether the queue is full. Write down another procedure DQ to delete an element after checking queue empty status.  

Ans.

The Method To Add an element in Circular Queue

# define  MAXQUEUE 100 struct queue{

int items[MAXQUEUE];

int front, rear;

}

struct queue q;

q.front=q.rear=MAXQUEUE -1;

void ENQ(struct queue *pq, int x)

{

/* make room for new element*/

if(pq ->rear = MAXQUEUE - 1)

pq-> rear = 0;

else

(pq->rear)++;

/* check for overflow */

if(pq ->rear==pq->front)

{

printf("queue overflow);

exit(1);

}

pq->items[pq->rear]=x;

return;

}/* end of ENQ*/

A Method to Delete an element from Circular Queue

int DQ(struct queue *pq)

{

if(pq-> rear == pq-> front)

{

printf("queue underflow");

exit(1);

}/*end if*/

if(pq->front = = MAXQUEUE-1)

pq->front=0;

else

(pq->front)++;

return(pq->items[pq->front]);

}/*end DQ*/


Related Discussions:- Method to add an element in circular queue

Trees, Have you ever thought about the handling of our files in operating s...

Have you ever thought about the handling of our files in operating system? Why do we contain a hierarchical file system? How do files saved & deleted under hierarchical directories

Illustrate the intervals in mathematics, Illustrate the intervals in mathem...

Illustrate the intervals in mathematics Carrier set of a Range of T is the set of all sets of values v ∈ T such that for some start value s ∈ T and end value e ∈ T, either s ≤

Comparisions and assignments in worst case, Q. Calculate that how many key ...

Q. Calculate that how many key comparisons and assignments an insertion sort makes in its worst case?        Ans: The worst case performance occurs in insertion

Illustrate the visual realism applications, Illustrate the Visual realism a...

Illustrate the Visual realism applications a)   Robot Simulations : Visualization of movement of their links and joints  and end effector movement etc. b)  CNC programs ver

Signals, How does cpu''s part tming and controls generate and controls sign...

How does cpu''s part tming and controls generate and controls signls in computer?

Programme in c to create a single linked list, Q. Write  down a   p...

Q. Write  down a   programme  in  C  to  create  a  single  linked  list also  write the functions to do the following operations (i)  To insert a new node at the end (ii

Memory mapping, lower triangular matrix and upper triangular matrix

lower triangular matrix and upper triangular matrix

Which sorting algorithm is adaptable to singly linked list, Which sorting a...

Which sorting algorithm is easily adaptable to singly linked lists? Simple Insertion sor t is easily adabtable to singly linked list.

Determine the stereo vision, Determine the stereo vision There is still...

Determine the stereo vision There is still one more major item missing, before we can look at a computer display or plot and perceive it just as we see a real object, namely th

frequenty count of function, Ask question find frequency count of function...

Ask question find frequency count of function- {for(i=1;i {for(j=1;j {for(k=1;k } } }

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd