Book Image

Hands-On Data Structures and Algorithms with JavaScript

By : Kashyap Mukkamala
Book Image

Hands-On Data Structures and Algorithms with JavaScript

By: Kashyap Mukkamala

Overview of this book

Data structures and algorithms are the fundamental building blocks of computer programming. They are critical to any problem, provide a complete solution, and act like reusable code. Using appropriate data structures and having a good understanding of algorithm analysis are key in JavaScript to solving crises and ensuring your application is less prone to errors. Do you want to build applications that are high-performing and fast? Are you looking for complete solutions to implement complex data structures and algorithms in a practical way? If either of these questions rings a bell, then this book is for you! You'll start by building stacks and understanding performance and memory implications. You will learn how to pick the right type of queue for the application. You will then use sets, maps, trees, and graphs to simplify complex applications. You will learn to implement different types of sorting algorithm before gradually calculating and analyzing space and time complexity. Finally, you'll increase the performance of your application using micro optimizations and memory management. By the end of the book you will have gained the skills and expertise necessary to create and employ various data structures in a way that is demanded by your project or use case.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
PacktPub.com
Contributors
Preface
5
Simplify Complex Applications Using Graphs
Index

Use cases for queues


Before we start off with use cases, we will need a base starting point in the form of a Node.js application. To create one, ensure that you have the latest Node.js installed:

node -v

This should show you your currently installed Node.js version; if it does not, then download and install the latest version of Node.js from https://nodejs.org/en.

Creating a Node.js application

To start off a sample Node.js project, simply create a project folder first and then run the following command from that folder:

npm init

On running this command, Node will prompt you with a series of questions, which you can either fill or leave blank:

Once the blank application is created, all you see is a file called package.jsonYou can now add the dependencies that are needed to create the Node.js application:

npm install body-parser express --save

The body-parser module helps with parsing of the POST request body, whereas the express module helps with the creation of the Node.js server.

Starting the...