/*Queue - Linked List implementation*/

#include<stdio.h>

#include<stdlib.h>

struct Node {

int data;

struct Node* next;

};

// Two glboal variables to store address of front and rear nodes.

struct Node* front = NULL;

struct Node* rear = NULL;

// To Enqueue an integer

voidEnqueue(int x) {

struct Node* temp =

(struct Node*)malloc(sizeof(struct Node));

temp->data =x;

temp->next = NULL;

if(front NULL && rear NULL){

front = rear = temp;

return;

}

rear->next = temp;

rear = temp;

}

// To Dequeue an integer.

voidDequeue() {

struct Node* temp = front;

if(front NULL) {

printf('Queue is Emptyn');

return;

}

if(front rear) {

front = rear = NULL;

}

else {

front = front->next;

}

free(temp);

}

intFront() {

if(front NULL) {

printf('Queue is emptyn');

return;

}

return front->data;

}

voidPrint() {

struct Node* temp = front;

while(temp != NULL) {

printf('%d',temp->data);

temp = temp->next;

}

printf('n');

}

intmain(){

/* Drive code to test the implementation. */

// Printing elements in Queue after each Enqueue or Dequeue

Enqueue(2); Print();

Enqueue(4); Print();

Enqueue(6); Print();

Dequeue(); Print();

Enqueue(8); Print();

}

• Contoh Program Queue Dengan Linked List Powerpoint
• Contoh Program Queue Dengan Linked List Pdf
• Contoh Program Queue Dengan Linked List Ppt
• Contoh Program Queue Dengan Linked List Adalah

Menghapus Simpul (di Depan, Belakang dan Tengah).c. Membaca isi linked list (Membaca maju dan mundur).2.4.2 Implementasi Queue dengan Single Linked ListSingle Linked List / Linked list satu arah (One Way List) Disebut demikian karena pada setiapsimpul hanya memiliki satu buah field yang berhubungan dengan simpul berikutnya. Contoh Program Queue Dengan Linked List Rating: 9,5/10 3107 reviews Dalam contoh program berikut ini saya gunakan double linked list untuk implementasi queue. Secara umum, operasi dalam queue ada 2 yang utama yaitu enqueue dan dequeue. Contoh Program Penggunaan Pustaka/ Library Linked List dalam Java Pustaka LinkedList telah disediakan oleh Java. Dengan adanya pustaka ini, membuat aplikasi linked list menjadi sangat mudah dan cepat.

Thnx 😄 ^_^

Circular Queue Program package com.javainuse; import java.util.Arrays; public class CircularQueueImplementation { public static void main(String[] args). Linked List,Pointer dan Contoh Program C++ LINKED LIST Linked list (list bertaut) adalah salah satu struktur data dasar yang sangat fundamental dalam bidang ilmu komputer.

There is a mistake in dequeue method ..you need to do temp = temp->next; then free(first); first = temp; You are freeing the second element each time and if free->next is null then it will crash.

Shouldn't you return something with the Dequeue function?

Why have you used the Front function? It's never really called. Please explain the purpose of this function definition.

@MRSharff - The purpose of dequeue function is to delete a node from the linked list. It has nothing to do with returning something.

Thanks a lot for this sample code.

commented Nov 15, 2016•

edited

Hey, There is a typo in Front function, when frontNULL - > return -1 or something instead of nothing. ðŸ‘x8D

Your code is very helpful here is another example hope it adds to your concept. C++ queue implementation using linked list

There is a simpler one here

commented Nov 27, 2017•

what we must do if the Data in our struct was int and string (number and name of student)

can anyone tell me what is the use of the function int Front in this code?I am confused. Thanks in advance!

@labeelola This is when you want to view, the latest value in front of the queue. This is not called, but that's not a problem, you can call it anywhere. It is just to view.

Queue Using Linked List In C Program

Hey guys, Please help me to complete my Assignment, I dont know much about C Programming Create a Queue.h file. This file contains: Node definition - int number, and a node pointer. Queue definition - head, tail, nodeCount Set of functions - a. void CreateQueue(Queue *q) b. Boolean CheckQueueEmpty(Queue *q) c. void enqueue(int number, Queue *q) d. int dequeue(Queue *q) Create a Queue.c file. This file contains all the functions implementation listed in Queue.h. Remark: ADT Queue is 'First in First Out'. enqueue - always add a new node at the back of the queue. dequeue - delete the head of the queue.

Thank you so much

sir make videos on other topics also,i observed that u r not uploading videos from past 2-3 years ,why sir?

THANKS ....IT'S SIMPLE AND COOL ....

Why have you used the Front function? It's never really called. Please explain the purpose of this function definition. Its to get the first element of the Queue(He didn't call it though)

If anyone tried with local front and rear variables in main method !

in the Dequeue function when the second if(frontrear) runs we have to free the space of node pointed by front previously i.e first node is the one when front and rear are equal if we modify the pointer front and rear to NULL we are wasting the memory of first node that was created please reply ASAP

Struktur data queue (antrian) dapat diimplementasikan dengan menggunakan array maupun linked list sebagai penyimpanan datanya. Dalam contoh program berikut ini saya gunakan double linked list untuk implementasi queue. Secara umum, operasi dalam queue ada 2 yang utama yaitu enqueue dan dequeue. Enqueue berarti memasukkan item baru ke dalam antrian. Sedangkan dequeue untuk mengeluarkan item dari antrian. Queue bersifat FIFO, First In First Out. Prerequisite – Circular Singly Linked List. C or C++ program for insertion and. Note: In case of linked list implementation, a queue can be easily.

I have some problems that code. I read file in code and build one stack and one queues structure. But the code wasn't run correctly.

This is Node classI used Double LinkedList

** this is stack class. **

This is Queues Class

This is Queues Class

1 Answer

Ok, so you have a couple of problems. I'm going to point out a few and let you work to fix the rest because this looks like an assignment and I don't want to do your homework for you :).

First, when you read from the file be careful not to ignore the first element:

Notice that unlike your solution I first do the push y.Push(line) so that we don't forget to add whatever is already read into line. Same goes for the queue file:

Just add it if it's not null and then read the next line. You were always missing on the first element from the file.

Another problem is the Queues class (which by the way is misspelled you should replace O with Q). This one is not working properly because you forgot to increment and decrement the size when you insert or remove.

Notice that at the end of insert I'm increasing the size so that the list method doesn't throw a NullPointerException every time we call it. Same goes for the remove method:

Please also notice that your check before (if(head.nexttail)) was also throwing NullPointerException because at the beginning the head is always null so you cannot access the next member. Finally I've made a small improvement to the list method as well so that we return earlier:

Download drama korea who are you school 2015 episode 13. Notice the return if the Queue is empty, otherwise we will attempt to do tail.getNext() which will always throw a NullPointerException.

Some important thoughts about the code in generalPlease avoid weird naming. Why Queues? There is just one so it should be Queue.Please avoid weird variable names. Your code is not just for you, chances are someone else might need to read and it gets hard to know who it is s, y, k, fwy and fwk. Why not naming them like this:

And the same goes for methods . Why Push, Pop and Top are the only methods that start with upper-case letterMicrosoft visual basic 2008 express edition registration key download free. ? If you don't agree with the standard Java naming convention that is fine but at least be consistent :).

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Try the suggested improvements and see how your program it's working. I'm almost sure there are more problems with it. If you can't figure them out yourself leave a comment and I will help you. Good luck!

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class item //atau node/simpul
{
public int data; // data item
public item next; // next node link in list
public item prev; // previous node link in list
public item(int id) // constructor
{
data = id; // initialize data
} // set to null)
public void displayLink() // display ourself
{
System.out.print('{' + data + '} ');
}
} // end class Link
class StackLinkList
{
private item top; // ref to first link on list
private item bottom; // ref to last link on list
public StackLinkList() // constructor
{
top = bottom = null; // no items on list yet
}
public boolean isEmpty() // true if list is empty
{
return (topnull);
}
public void push(int id) //node baru selalu di top
{ // make new link
item newitem = new item(id);
if (top null) // the first node created
{
top = bottom = newitem; // first --> newLink
}
else // the second node and the next node
{
top.next = newitem; //next dr top (awal) diarahkan ke node baru
newitem.prev = top; //prev dr node baru diarahkan ke tail (awal)
top = newitem; //top (baru) diarahkan ke node baru
}
}
public item pop() // delete first item
{ item temp = null;
if (top null) // stack is empty
System.out.println('Stack is empty');
else if (top bottom) // stack is only one data
{
temp = top;
top = bottom = null;
}
else // stack has more than one data
{
temp = top; // save reference to link
top = top.prev; // delete it: first-->old next
top.next = null;
}
return temp;
}
public void display()
{
item current = bottom; // start from the first data
while(current != null) // until end of list,
{
current.displayLink(); // print data
current = current.next; // move to next link
}

Contoh Program Queue Dengan Linked List Powerpoint

System.out.println(');
}
} // end class LinkList
class StackLinkListApp
{
public static void main(String[] args)
{
StackLinkList theStack = new StackLinkList(); // make new list
System.out.println('Initializing Stack..');
theStack.push(22); // insert four items
theStack.push(44);
theStack.push(66);
theStack.push(88);
System.out.println('Display Forward :');

Contoh Program Queue Dengan Linked List Pdf

theStack.display(); // display list
System.out.println('Delete Stack from Top..');
while( !theStack.isEmpty() ) // until it's empty,
{
item aLink = theStack.pop(); // delete link
System.out.print('Deleted '); // display it
aLink.displayLink();
System.out.println(');
}

Contoh Program Queue Dengan Linked List Ppt

Contoh Program Queue Dengan Linked List Adalah

theStack.display(); // display list
} // end main()
}