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Write a algorithm for a deque operations?
please read data structure (schaum series) books
What is queue explain the basic element of queue?
The queue is a linear data structure where operations of insertion and deletion are performed at separate ends also known as front and rear. Queue is a FIFO structure that is first in first out. Following are the types of queue: Linear queue Circular queue Priority queue Double ended queue ( or deque )
What is the need of deque?
A double ended queue (or deque ) is a queue where insertion and deletion can be performed at both end that is front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion). So when we need to insert or delete at both end we need deque.
C program for the two dimensional array repesentation of priority queue?
//implement double ended queue using array. #include<stdio.h> #include<conio.h> #define SIZE 20 typedef struct dq_t { int front,rear; int item[SIZE]; }deque; /********** Function Declaration begins **********/ void create(deque *); void display(deque *); void insert_rear(deque *, int); void insert_front(deque *, int); int delete_front(deque *, int); int delete_rear(deque *, int); /********** Function Declaration ends **********/ void main() { int data,ch,x; deque DQ; clrscr(); create(&DQ); printf("\n\t\t Program shows working of double ended queue"); do { printf("\n\t\t Menu"); printf("\n\t\t 1: insert at rear end"); printf("\n\t\t 2: insert at front end"); printf("\n\t\t 3: delete from front end"); printf("\n\t\t 4: delete from rear end"); printf("\n\t\t 5: exit. "); printf("\n\t\t Enter choice :"); scanf("%d",&ch); switch(ch) { case 1: if (DQ.rear >= SIZE) { printf("\n Deque is full at rear end"); continue; } else { printf("\n Enter element to be added at rear end :"); scanf("%d",&data); insert_rear(&DQ,data); printf("\n Elements in a deque are :"); display(&DQ); continue; } case 2: if (DQ.front <=0) { printf("\n Deque is full at front end"); continue; } else { printf("\n Enter element to be added at front end :"); scanf("%d",&data); insert_front(&DQ,data); printf("\n Elements in a deque are :"); display(&DQ); continue; } case 3: x = delete_front(&DQ,data); if (DQ.front==0) { continue; } else { printf("\n Elements in a deque are :"); display(&DQ); continue; } case 4: x = delete_rear(&DQ,data); if (DQ.rear==0) { continue; } else { printf("\n Elements in a deque are :"); display(&DQ); continue; } case 5: printf("\n finish"); return; } } while(ch!=5); getch(); } /********** Creating an empty double ended queue **********/ /********** Function Definition begins **********/ void create(deque *DQ) { DQ->front=0; DQ->rear =0; } /********** Function Definition ends **********/ /********** Inserting element at rear end **********/ /********** Function Definition begins **********/ void insert_rear(deque *DQ, int data) { if ((DQ->front 0) { printf("\n Underflow"); return(0); } else { DQ->rear = DQ->rear -1; data = DQ->item[DQ->rear]; printf("\n Element %d is deleted from rear:",data); } if (DQ->front==DQ->rear) { DQ->front =0; DQ->rear = 0; printf("\n Deque is empty(rear end)"); } return data; } /********** Function Definition ends **********/ /********** Displaying elements of DEQUE **********/ /********** Function Definition begins **********/ void display(deque *DQ) { int x; for(x=DQ->front;x<DQ->rear;x++) { printf("%d\t",DQ->item[x]); } printf("\n\n"); } /********** Function Definition ends **********/
What is a double ended queue?
A double ended queue, or deque, is a queue in which you can access or modify both the head and the tail. The front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion)
How can I efficiently implement a circular array in Python?
To efficiently implement a circular array in Python, you can use the collections.deque data structure. Deque allows for efficient insertion and deletion at both ends of the array, making it suitable for circular arrays. You can use the rotate() method to shift elements in the array, effectively creating a circular structure.
Write a algorithm for a deque operations?
please read data structure (schaum series) books
Which data structure allows deletion from both ends and insertion only from one end?
Deque double ended queue
What is difference between enque and dequeue?
deque
What is the time complexity of deque operations in data structures?
The time complexity of deque operations in data structures is O(1), which means they have constant time complexity.
What is queue explain the basic element of queue?
The queue is a linear data structure where operations of insertion and deletion are performed at separate ends also known as front and rear. Queue is a FIFO structure that is first in first out. Following are the types of queue: Linear queue Circular queue Priority queue Double ended queue ( or deque )
How do you write a program to delete elements at both ends of a deque using C plus plus?
The C++ STL (Standard Template Library) provides a std::deque template specifically for this purpose: std::deque<int> deq {}; // default construct an empty deque of type int deq.push_back (42); // deq = {42} deq.push_front (0); // deq = {0, 42} deq.push_back (100); // deq = {0, 42, 100} deq.pop_front (); // deq = {42, 100} deq.pop_back (); // deq = {42} As with all other STL containers, any type or class that can be copy or move constructed can be placed in a std::deque, including other STL containers (even std::deque itself).
What are types of Queue?
Queue is a data structure which is based on FIFO that is first in first out. Following are the types of queue: Linear queue Circular queue Priority queue Double ended queue ( or deque )
Program to delete elements at both ends in a dequeue using c plus plus?
#include<deque> std::deque<int> deq; deq.push_back (42); deq.pop_back (); deq.push_front (0); deq.pop_front ();
What is the birth name of Danny Demanto?
Danny Demanto's birth name is Daniel C. DeQue.
What do you understand by deque?
A double ended queue (or deque ) is a queue where insertion and deletion can be performed at both end that is front pointer can be used for insertion (apart from its usual operation i.e. deletion) and rear pointer can be used for deletion (apart from its usual operation i.e. insertion)
C program to implement deque using circular linked list?
You'll need to use a doubly-linked circular list, since otherwise when you pop off the tail element you'll need to whizz all the way round the list to find its predecessor. See the links section for an implementation of a doubly-linked circular list.
