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

Interviews at Crossover

Crossover is a remote company. They recruit remotely via their platform and have an exclusive on-site interview process. Their on-site interview adheres to the following roadmap:

Figure 2.1 – Crossover interview roadmap

All steps are important, which means your responses at each step must pass their internal playbooks. If a step doesn't pass their internal playbooks, then it can lead to a sudden closure of the interview. But, the most important steps are steps 3, 5, 6, and 7. Step 3 represents an eliminatory Criteria Cognitive Aptitude Test (CCAT). For example, you have to answer 50 questions in 15 minutes. You have to answer correctly 25+ questions to have a chance to advance to the next step. If you are not familiar with CCAT tests, then it is strongly recommended to practice (there are books and websites dedicated to CCAT tests). Without serious practice, it will be quite challenging to pass it. If you are not a native...