Which of the Following Is a Linear Data Structure?

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Larry Thompson

A data structure is a way of organizing and storing data in a computer’s memory. There are different types of data structures, each with its own characteristics and use cases. One common classification of data structures is based on their organization, such as linear and non-linear data structures.

Linear Data Structures

In a linear data structure, the elements are arranged in a sequential manner, where each element has a predecessor and successor (except for the first and last elements). This sequential arrangement allows for easy traversal of the elements from one end to another.

There are several linear data structures commonly used in programming:

1. Arrays

An array is a collection of elements stored in contiguous memory locations.

Elements in an array are accessed using their index position. Arrays are fixed in size, meaning they have a predetermined number of elements.

Example:

<ul>
    <li>John</li>
    <li>Jane</li>
    <li>Alice</li>
</ul>

2. Linked Lists

A linked list is made up of nodes, where each node contains both the element and a reference to the next node.

Unlike arrays, linked lists can grow or shrink dynamically during runtime. Linked lists can be singly linked (each node has a reference to the next node) or doubly linked (each node has references to both the next and previous nodes).

Example:

<p><b>John</b></p>
<p><b>Jane</b></p>
<p><b>Alice</b></p>

3. Stacks

A stack is a last-in, first-out (LIFO) data structure.

Elements are added and removed from only one end, known as the top of the stack. A stack can be implemented using an array or a linked list.

4. Queues

A queue is a first-in, first-out (FIFO) data structure.

Elements are added at one end, known as the rear or enqueue, and removed from the other end, called the front or dequeue. A queue can also be implemented using an array or a linked list.

Conclusion

In summary, linear data structures are organized in a sequential manner with each element having a predecessor and successor (except for the first and last elements). Arrays, linked lists, stacks, and queues are commonly used linear data structures in programming.

Understanding the characteristics and use cases of different data structures is essential for efficient coding and problem-solving. Each data structure has its advantages and disadvantages depending on the specific requirements of a program or algorithm.

Remember to choose the appropriate data structure based on the operations you need to perform, the efficiency requirements, and the constraints of your programming language or environment.

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