Book Image

The Complete Coding Interview Guide in Java

By : Anghel Leonard
Book Image

The Complete Coding Interview Guide in Java

By: Anghel Leonard

Overview of this book

Java is one of the most sought-after programming languages in the job market, but cracking the coding interview in this challenging economy might not be easy. This comprehensive guide will help you to tackle various challenges faced in a coding job interview and avoid common interview mistakes, and will ultimately guide you toward landing your job as a Java developer. This book contains two crucial elements of coding interviews - a brief section that will take you through non-technical interview questions, while the more comprehensive part covers over 200 coding interview problems along with their hands-on solutions. This book will help you to develop skills in data structures and algorithms, which technical interviewers look for in a candidate, by solving various problems based on these topics covering a wide range of concepts such as arrays, strings, maps, linked lists, sorting, and searching. You'll find out how to approach a coding interview problem in a structured way that produces faster results. Toward the final chapters, you'll learn to solve tricky questions about concurrency, functional programming, and system scalability. By the end of this book, you'll have learned how to solve Java coding problems commonly used in interviews, and will have developed the confidence to secure your Java-centric dream job.
Table of Contents (25 chapters)
1
Section 1: The Non-Technical Part of an Interview
7
Section 2: Concepts
12
Section 3: Algorithms and Data Structures
19
Section 4: Bonus – Concurrency and Functional Programming

The novice interview roadmap

Let’s start from a fundamental truth that is absolutely necessary, but not sufficient, to become a successful developer: the best Java developers are passionate about their work, and, in time, true passions become professions. Over the long term, passion is priceless and it will make you stand out of the crowd of skilled but dispassionate people.

Since you bought this book, you want to invest some time and money in a Java software development career. Mainly, you want to become part of the amazing Java ecosystem! You already feel the power and the energy that comes from focusing on working with Java, therefore, even if you haven’t yet actively thought about it, you’ve already started to prepare yourself for a Java interview.

Most probably, you are a student or you’ve just got a bachelor’s degree in IT, computer science, or you’ve simply discovered your propensity for the Java language. Nevertheless, since you are here, you have a lot of questions and doubts about how to get the dream job in the Java ecosystem.

It is time to bake a plan for success! The following flowchart represents the interview roadmap for a student or Java novice who wants to be part of the Java ecosystem:

Figure 1.1 – Novice interview roadmap

Figure 1.1 – Novice interview roadmap

In this chapter, we will cover each item of the preceding diagram. Let’s get started with the first item, Know yourself.