Book Image

PHP 7 Data Structures and Algorithms

By : Rahman
5 (1)
Book Image

PHP 7 Data Structures and Algorithms

5 (1)
By: Rahman

Overview of this book

PHP has always been the the go-to language for web based application development, but there are materials and resources you can refer to to see how it works. Data structures and algorithms help you to code and execute them effectively, cutting down on processing time significantly. If you want to explore data structures and algorithms in a practical way with real-life projects, then this book is for you. The book begins by introducing you to data structures and algorithms and how to solve a problem from beginning to end using them. Once you are well aware of the basics, it covers the core aspects like arrays, listed lists, stacks and queues. It will take you through several methods of finding efficient algorithms and show you which ones you should implement in each scenario. In addition to this, you will explore the possibilities of functional data structures using PHP and go through advanced algorithms and graphs as well as dynamic programming. By the end, you will be confident enough to tackle both basic and advanced data structures, understand how they work, and know when to use them in your day-to-day work
Table of Contents (14 chapters)

Tree traversal

Tree traversal refers to the way we visit each node in a given tree. Based on how we do the traversing, we can follow three different ways of traversing. These traversals are very important in many different ways. Polish notation conversion for expression evaluation is one of the most popular examples of using tree traversals.

In-order

In-order tree traversal visits the left node first, then the root node, and followed by the right node. This continues recursively for each node. The left node stores a smaller value compared to the root node value and right node stores a bigger value than the root node. As a result, when we are applying in-order traversing, we are obtaining a sorted list. That is why, so far...