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Top 15 DS Algo Interview Questions for Java Developers(Commonly Asked)
Hello guys, if you are you a software engineer or specifically a Java Developer and you have a fear of DSA in interview 2025 then you came to right place?
In the past, I have shared Top 10 Reasons Why You Are Unable To Switch Jobs. and Why You Should Read These Three Books Right Now To Succeed. and today, I am going to share Top 15 DS Algo Interview Questions for Java Developers in 2025.
Along with DSA I suggest you should also go for the System design courses of books that i find most valuable in your journey and when it comes to find interactive courses/books, Educative.io and ByteByteGo is the first names which comes in my mind.
These two courses are very good in terms of quality and building foundations of system design.
I have also published three Interview books in thw past, that you might be interested in Guide To Clear Java Developer Interview , Guide To Clear Spring-Boot Microservice Interview and Guide To Clear Front-End Developer Interview which are a bestseller on Amazon.
Lets get Started,
I know that every Java technical interview now includes Data Structures and Algorithms (DSA) questions in the technical round. So it’s crucial to focus on the most frequently asked DSA questions as part of your last-minute interview preparation.
Even if you’re not a LeetCode enthusiast or someone who do not work with DSA daily, don’t worry. As a Java developer, I recommend preparing only what’s commonly asked in recent interviews.
Most Java technical rounds revolve around Java and its related ecosystem. Since interviewers have limited time to assess DSA skills, they often ask commonly repeated questions to test candidates’ problem-solving abilities.
I’ve successfully cleared interviews using this focused preparation method. Let’s dive into the coding DSA questions that keep appearing in interviews.
Do Practice Below Questions and You will be fine. There might be different ways to do the same thing in the coding program so bear with me.
- Print all substrings of a string (List every possible substring)
ublic class SubstringPrinter {…
