Top Java Challenges
Cracking the Coding Interview

Increase your software development income by leveling up your problem solving skills using algorithms and data structures. The more prepared and confident you are, the better the chances of negotiating your next salary!.

What Will You Get From This Book?

Understand the fundamentals of common data structures and algorithms and apply them to real questions.

Create algorithms that range from basic to very complex.

Solve the most popular Java coding problems efficiently.

Develop a complete algorithm using the TDD approach, e.g., graph-based transport system, tic tac toe game.

React better than other candidates, when faced with a new problem, e.g., design an algorithm to solve a problem you haven't seen before.

Better chances of negotiating your next salary.

What's Included

  • Inner workings of Data Structures.
  • Big O Notation.
  • Arrays and Strings.
  • Linked Lists.
  • Math and Logic Puzzles.
  • Recursion.
  • Sorting and Searching.
  • Hash Table.
  • Stacks and Queues.
  • Trees and Graphs.
  • Challenge Codes.

Who This Book Is For

If you are a skilled Java programmer but are concerned about the Java interview process, this based on real questions guide can help you land your next position.

Software Engineers/Software architects

App/Web Developers


DevOps engineer/Technical decision makers

Data/ML engineer

Cloud native engineer/Cybersecurity engineer

Interested in computer science

Get a Free Sample copy!

It will give you an overview of what you will get in the entire book.

Book Reviews

See what our readers are saying.
"A MUST read for any Java Developer! Succinct and super informative!. The author tries his best to keep the explanation as succinct as possible at the same time providing the code snippets and explanations including pictorial representation of problem-solutions!"
Development Tech Lead at EBRD
"This is an excellent source material for anyone looking to gain an advantage in landing that competitive job. I truly found the real life examples so helpful, that I recommended this book to my developer friends."
Henry Quinones
Business Development, Project Manager

Be ready to negotiate your next salary!

Jobs in the tech industry are growing exponentially.

About The Author

Moises Gamio has been working 20 years as a Software Engineer for several companies from different economic sectors such as Government, Financial, Industrial, Educative, Consulting, Retail, and Research. He has been using several technological tools such as Java, C, Cobol, C#, Visual Basic, PHP, and JScript, in operating systems such as Windows, Linux, Unix, and RISC 6000, in databases such as SQL Server, Oracle, MySQL, DB2, and Lotus Notes. His tasks are related to Software Development, Stages of Analysis, Design, Testing, and Deployment.

For eight years, he worked as a System Analyst for the Bank Sector. Since 2014 he is working as a Software Engineer in a B2B company in Berlin, Germany.