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

Chapter 11: Linked Lists and Maps

This chapter covers the most popular coding challenges involving maps and linked lists that you will encounter in coding interviews. Since singly linked lists are preferred in technical interviews, most of the problems in this chapter will exploit them. However, you can challenge yourself and try to solve each such problem in the context of a doubly linked list as well. Commonly, the problems become easier to solve for a doubly linked list because a doubly linked list maintains two pointers for each node and allows us to navigate back and forth within the list.

By the end of this chapter, you'll know all of the popular problems involving linked lists and maps, and you'll have enough knowledge and understanding of numerous techniques to help you to tackle any other problem in this category. Our agenda is quite simple; we'll cover the following topics:

  • Linked lists in a nutshell
  • Maps in a nutshell
  • Coding challenges
  • ...