Book Image

Learning JavaScript Data Structures and Algorithms - Second Edition

By : Loiane Groner
Book Image

Learning JavaScript Data Structures and Algorithms - Second Edition

By: Loiane Groner

Overview of this book

This book begins by covering basics of the JavaScript language and introducing ECMAScript 7, before gradually moving on to the current implementations of ECMAScript 6. You will gain an in-depth knowledge of how hash tables and set data structure functions, as well as how trees and hash maps can be used to search files in a HD or represent a database. This book is an accessible route deeper into JavaScript. Graphs being one of the most complex data structures you’ll encounter, we’ll also give you a better understanding of why and how graphs are largely used in GPS navigation systems in social networks. Toward the end of the book, you’ll discover how all the theories presented by this book can be applied in real-world solutions while working on your own computer networks and Facebook searches.
Table of Contents (18 chapters)
Learning JavaScript Data Structures and Algorithms - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

The sorting algorithms


From this introduction, you should understand that you need to learn how to sort first and then search for the information given. In this section, we will cover some of the most well-known sorting algorithms in computer science. We will start with the slowest one, and then we will cover some better algorithms.

Before we get started with the sorting algorithms, let's create an array (list) to represent the data structure that we want to sort and search, as follows:

function ArrayList(){ 
 
  var array = []; //{1} 
 
  this.insert = function(item){ //{2} 
    array.push(item); 
  }; 
 
  this.toString= function(){ //{3} 
    return array.join(); 
  }; 
} 

As you can note, ArrayList is a simple data structure that stores the items in an array (line {1}). We only have an insert method to add elements to our data structure (line {2}), which simply uses the native push method of the JavaScript Array class that we...