Top Data Structures Interview Questions and Answers

Some recruiting managers have become experts in interviewing software developers, data scientists, and website developers. It is important that you are prepared to win during your Data Structures Interview Questions.

It is important to understand what a data structure is.

Without a good data structure, organizing data that is stored in a computer system or database can be difficult.

If you have any questions, you will need to demonstrate a deep knowledge of data structures. You should be able to learn data structures and algorithms, regardless of whether you are a web developer, a data scientist, or a software developer.

Next are some frequently asked Data Structures Interview Questions. These questions are especially useful for candidates who want to crack the interview on their first attempt.

Interview Questions and Answers for the Top 25 Data Structures

Interview questions and answers are structured in such a way that they can be used to help you decide what type of question you should expect. It is a great advantage to be familiar with the topic and how to answer the questions. This will allow you to increase your knowledge about the topics that are expected during the interview.

Champions are as brilliant as the basics. The viva can still be derived from topics other than the basics of data structures in the niche.

Let’s start by reviewing the most frequently asked questions and answers from interviews:

Interview Questions and Answers on Basic Data Structures

1) What is data structure?

A data structure is a collection of procedures that allow data to be stored, accessed, and manipulated. For instance; arrays, linked lists, stacks, queues, etc. Data Structures are an integral part many computer science algorithms that allow the management of data in a systematic manner.

2) Describe the different data structures.

There are two types of data structures:

Linear Data Structure: A data arrangement where all data elements or items are arranged in a linear fashion, where each element is connected to its next and previous adjacent. This single-level data structure is commonly used in software development.

Examples include: Arrays and stacks, queues, link lists, and queues.

Non-Linear Data Structure (Non-Linear Data structure): This is where all data elements are joined in an orderly manner. It allows for multiple-level data structuring and is useful for image processing and artificial intelligence.

Examples include graphs and trees.

3) Is an array a type of data structure?

An array is a linear data arrangement that stores similar data types in different memory locations. An array cannot contain both integers and character elements together.

This is one of the most common questions about basic data structures.

4) List the areas of application of Data Structure.

These are the areas in computer science where data structures can be applied:

– Artificial Intelligence

– Compiler Design

– Database Management System

Graphics

– Numerical Analysis

– Operating System

Simulation

– Statistical Analysis package

5) List the data structures used in RDBMS and Network Data Modal.

The following lists contain the data structures used:

– RDBMS uses an array data structure

– Network data model uses Graph,

– Hierarchal data model uses Trees.

6) What operations can be done on a stack to perform certain tasks?

– Push Operations

Pop Operations

Peek Operations

7) What is the difference in PUSH and POPS?

The PUSH or POP symbols denote the entry and removal data to a stack.

PUSH: This indicates that data is being “inserted into” the stack.

POP: This is data retrieval. It indicates that data is being removed from the stack.

8) What is a stack example?

A stack of plates, a deck or cards, or a pile of plates could all be examples of a stack. A stack is known as a last in, first out (LIFO), list. The last element is the one to be removed.

9) List the types and uses of trees.

It includes six types of trees, including:

Binary Tree

– Binary Search Tree

Expression Tree

– Forests

– General Tree

– Tournament Tree

10) What is a one-dimensional array?

A One-Dimensional array (or linear structure of components) is one that stores the same type data values using the same variable.

11) What are stack and queue?

Stack is the collection of elements in Last in First Out (LIFO). The push operation is the insertion operation.

A queue, on the other hand, is the representation of the collection elements in First In First Out. The Enqueue operation is used to describe the insertion operation.

12) What is the Big O function?

Big O Notation is a theoretical method to test a computer algorithm’s efficiency when inputs increase. It descri