# Stack and queue in data structure using c++ pdf tutorials

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- Understand Data Structures in C and C++
- data structures and program design in c++ pdf
- Stack and Queue C/C++ Programs
- What is a Queue Data Structure?

## Understand Data Structures in C and C++

Here, we will clear all your doubts with examples. Stay updated with latest technology trends Join DataFlair on Telegram!! Insertion is done from the back the rear end and deletion is done from the front.

Let us consider a simple scenario to help you get a clear picture of queues. Learn More about Structures in C Language. Suppose you want to purchase a movie ticket.

For that, you need to stand in a queue and wait for your turn, that is, you have to stand at the rear end of the queue. From the above discussion, it is pretty obvious that insertion in a queue takes place from the back and deletion takes place from the front as the first person to enter the queue would be the first to get his job done and leave.

Key takeaway: Both stacks and queues can be static or dynamic according to the way they are implemented. As we already discussed, arrays support the static memory allocation of the data elements of the queue. Therefore, it is important to determine the size of the queue prior to the program run. Insertion of elements into the queue takes place from the rear end and hence would force the elements to shift forward.

Inserting an element into the queue is also called enqueue. Here is a diagrammatic representation of how elements are inserted into a queue:. In a queue, the deletion of data elements is done from the front. Deleting the element from the queue is also called dequeue. Similarly, in queues, apart from these 3 main functions, it is necessary to check the overflow and underflow conditions to avoid unfavorable situations. As we already discussed, linked lists support the dynamic memory allocation of the data elements of the queue.

The 3 basic operations of Insertion, Deletion, and Display follow a similar trend as we saw in the array implementation of queues. It is important to note that the condition of queue overflow does not exist in the linked list implementation of queues and the size of the stack is not pre-determined. But, the queue underflow condition still holds true. The role of a circular queue comes into play when we wish to avoid the loss of computer memory using arrays.

It is based on the principle that the rear end of the queue becomes equal to its front end. The circular queue operations are the same as that of a linear queue , that is, insertion, deletion and display and checking of boundary conditions such as overflow and underflow.

The principle FIFO followed by queues gives birth to the various applications of queues. Some of the most popular applications of queues are:. Data Structures are an important concept of every programming language.

Hope, you liked the explanation and can easily implement queues with arrays and linked list. If you have any queries regarding this topic, feel free to let us know your responses in the comment section below! Build your Coding skills with these basic C Programs.

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## data structures and program design in c++ pdf

Here, we will clear all your doubts with examples. Stay updated with latest technology trends Join DataFlair on Telegram!! Insertion is done from the back the rear end and deletion is done from the front. Let us consider a simple scenario to help you get a clear picture of queues. Learn More about Structures in C Language. Suppose you want to purchase a movie ticket. For that, you need to stand in a queue and wait for your turn, that is, you have to stand at the rear end of the queue.

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Queue is also an abstract data type or a linear data structure, just like stack data structure , in which the first element is inserted from one end called the REAR also called tail , and the removal of existing element takes place from the other end called as FRONT also called head. Before you continue reading about queue data structure, check these topics before to understand it clearly:. Which is exactly how queue system works in real world. If you go to a ticket counter to buy movie tickets, and are first in the queue, then you will be the first one to get the tickets. Same is the case with Queue data structure.

Design challenge for every data type: Which data structure to use? • Resource 1: How much Stacks and queues both arise naturally in countless applications. A key characteristic. Basic mechanism in interpreters, compilers. • Fundamental.

## Stack and Queue C/C++ Programs

Data structures and algorithms are the foundations for how programs store and process information. Write a java program to show multithreaded producer and consumer application. Binary search compares the target value to the middle element of the array.

In this tutorial, you will learn what a queue is. A queue is a useful data structure in programming. It is similar to the ticket queue outside a cinema hall, where the first person entering the queue is the first person who gets the ticket. In the above image, since 1 was kept in the queue before 2, it is the first to be removed from the queue as well.

### What is a Queue Data Structure?

A computer program is a collection of instructions to perform a specific task. For this, a computer program may need to store data, retrieve data, and perform computations on the data. A data structure is a named location that can be used to store and organize data. And, an algorithm is a collection of steps to solve a particular problem. Learning data structures and algorithms allow us to write efficient and optimized computer programs. Programiz offers a complete series of easy to follow DSA tutorials along with suitable examples.

In computer science , a stack is an abstract data type that serves as a collection of elements, with two main principal operations:. The order in which elements come off a stack gives rise to its alternative name, LIFO last in, first out. Additionally, a peek operation may give access to the top without modifying the stack. This structure makes it easy to take an item off the top of the stack, while getting to an item deeper in the stack may require taking off multiple other items first. Considered as a linear data structure , or more abstractly a sequential collection, the push and pop operations occur only at one end of the structure, referred to as the top of the stack. This data structure makes it possible to implement a stack as a singly linked list and a pointer to the top element.

We shall begin by looking at some widely used basic data structures (namely arrays, linked lists, stacks and queues), and the advantages and disadvantages of.

#### 2. Array Implementation of Queue in C/C++

A data structure can be any organization, management, and storage format of data that allows efficient access and modification. It is a collection of data values, relationships amongst them, and the various functions or operations that can be applied to the data. Data structures are a foundational concept of programming which is immensely utilized in algorithm design. Hence, it is important for any programmer, irrespective of the programming language , to have a good understanding of data structures. Any programming language interview can have a few or many questions based on data structures. Here are the top data structure interview questions and answers with their respective answers for you:. Answer : A data structure offers a convenient way of organizing as well as manipulating the data.

In the modern world, Data and its information is an essential part, and various implementations are being made to store in different ways. Data are just a collection of facts and figures, or you can say data are values or a set of values that are in a particular format. A data item refers to a single set of values.