ALGOCADEMY

Master Kotlin with Interactive Practice Problems

Our interactive Kotlin practice problems and AI-assisted learning will help you master problem-solving skills and teach you the algorithms to ace coding interviews.

340+ step-by-step lessons 11 programming languages Free to start, no card needed
SEE HOW THE LEARNING HAPPENS.Inside AlgoCademy

REAL LESSONS. ONE STEP AT A TIME.

A little guidance.
A lot of thinking.

This is Two Sum in the Python course, as you see it in the app. Each step is a line or two of the solution, checked by the lesson’s tests before the next one appears.

Try the free lessons
AlgoCademy · Two Sum · Python
The lesson page: on the left the Two Sum problem and step 1, “Declare a hash table named indexOfValue”; on the right the editor, with the step’s number on line 3.

AlgoCademy students have landed roles at

Google, Amazon, Meta, Netflix, and UberIndividual student outcomes; your path will be your own.

WHAT YOU GET.

Struggling with Kotlin coding interviews?

Beat your next Kotlin coding interview by enhancing your problem-solving skills and mastering Kotlin through interactive practice. AlgoCademy offers in-depth, practical training designed specifically for Kotlin – featuring an efficient study plan, comprehensive video explanations, interactive coding tutorials, and over 290+ hand-picked Kotlin practice problems tested by hundreds of successful candidates.

Efficient Kotlin Study Plan

Mastering Kotlin Algorithms and Data Structures can be challenging without a clear roadmap. Our efficient Kotlin study plan guides you step-by-step through essential topics, ensuring you develop a strong foundation for coding interviews.

Kotlin Video Explanations

Everyone learns differently. Our detailed Kotlin video explanations break down complex concepts into easy-to-understand lessons, helping you apply best practices and write high-quality Kotlin code.

Interactive Kotlin Coding Tutorials

Our step-by-step Kotlin coding tutorials pinpoint exactly where your code needs improvement, ensuring you write clean, efficient solutions that impress interviewers.

290+ Kotlin Practice Problems

Kotlin coding interview prep is a numbers game. We’ve hand-picked over 290 Kotlin practice problems that simulate real interview challenges, ensuring you build the confidence needed to succeed.

Kotlin-Focused Solutions

Our solutions are expertly crafted to leverage Kotlin-specific features and best practices, helping you write idiomatic, maintainable code tailored for the Kotlin ecosystem.

Kotlin Mastery Certificate

Celebrate your success with an official AlgoCademy Kotlin Certification, awarded upon completion of the course to prove your expertise in solving interactive Kotlin practice problems.

IS IT RIGHT FOR YOU?

Master Kotlin at Your Own Pace

At AlgoCademy, we built our platform for anyone looking to master Kotlin – whether you’re new to programming or a seasoned coder prepping for interviews. Our interactive Kotlin practice problems demystify complex algorithms and data structures, offering a clear, structured pathway to Kotlin excellence.

Is AlgoCademy right for you? Simply put, we’re for you if...

  • You’re preparing for Kotlin coding interviews but are overwhelmed by where to start.
  • You’ve tried generic problems online but need Kotlin-specific challenges that mirror real interviews.
  • Even if you can devise an approach, you struggle with writing clean, efficient Kotlin code.
  • You want to build speed and accuracy when tackling challenging Kotlin problems under pressure.
  • You’re tired of unstructured resources and need an interactive, focused platform for Kotlin.

THE MOMENT IT STARTS TO CLICK.

Real people.
New confidence.

From getting unstuck to taking the next career step. Here’s how students describe their experience.

Read more student stories
After going through all the lessons, I gained the necessary skills to perform well at my on-sites. I crushed even the DP problems, which were my biggest fear. And thanks to that I landed offers from Microsoft and Uber. Thank you AlgoCademy!
Cristina Radulescu Landed offers from Microsoft and Uber
AlgoCademy really helped me improve my problem solving skills and write incredibly clean code. I was worried it wouldn’t be done in time for my coding interviews, but the way the curriculum is structured made me progress very quickly. Thanks for your work!
Connor Holland Student story · Vanguard
Wow. I've been using AlgoCademy for a while and now I can finally solve coding questions on my own. This gave me the confidence I needed for my interviews, and guess what? I landed the offer at Samsung! You guys truly kick ass. High fives!
Ankit Kumar Landed an offer at Samsung
Hear Connor’s story His experience learning with AlgoCademy

HOW WE COMPARE.

What sets AlgoCademy apart?

Unlike our competitors, AlgoCademy offers the most comprehensive, high-quality interactive Kotlin practice platform. Our step-by-step approach shows you exactly what’s working – and what isn’t – in your code, with a laser focus on the challenges you’ll face in Kotlin interviews. Learn to write clean, efficient code through video instructions and interactive validators designed exclusively for Kotlin.

FeatureAlgoCademyLeetCode / HackerRankCodecademyAlgoExpert
Optimized for Coding Interviews✓ Yes✓ Yes– No✓ Yes
Performance Validation✓ Yes✓ Yes– No– No
Learn to write Clean Quality Code✓ Yes– No– No– No
Step-by-Step Coding Tutorials✓ Yes– No✓ Yes– No
Video Content✓ Yes– No– No✓ Yes
Code Quality Validation✓ Yes– No– No– No
Optimized Problem Set for a fast learning curve✓ Yes– No– No✓ Yes

MEET THE PEOPLE BEHIND THE LESSONS.

Engineers who love
the “aha” moment.

Learn from instructors whose experience spans software engineering, competitive programming, and years of helping others learn.

Andrei Chiriac

SOFTWARE ENGINEER & INSTRUCTOR

Andrei Chiriac

Andrei has worked at Amazon and Keystone and earned a bronze medal at the Central European Olympiad in Informatics. Since 2015, he has coached students for programming competitions and coding interviews.

Mircea Dima

FOUNDER & SOFTWARE ENGINEER

Mircea Dima

Mircea has worked at Facebook, Adobe, Ubisoft, and startups. His engineering experience includes autocorrect, swipe typing, and music recommendations, alongside more than a decade of programming and interview coaching.

A FEW QUESTIONS BEFORE YOU START.

Frequently asked questions

Got questions about our interactive Kotlin practice problems? Let us help!
Ask the AlgoCademy team ↗

Will these Kotlin practice problems get me ready for my coding interviews?

Yes! Our content is designed to simulate real Kotlin coding interview challenges – from basic loops and control structures to advanced algorithms. Our interactive problems ensure you’re thoroughly prepared for any scenario.

I’ve never programmed in Kotlin before. Is AlgoCademy’s platform beginner friendly?

Absolutely! While a basic understanding of programming helps, our lessons start with fundamental Kotlin concepts and gradually work up to advanced topics. We’re here to meet you at your level – whether you’re a beginner or looking to sharpen your skills.

Is all of the content available straight away or is it drip fed?

No drip-feeding here! You get access to all interactive Kotlin practice problems and lessons immediately. Jump in and practice at your own pace, with new content periodically added to keep your skills sharp.

Why should I become a member today instead of waiting?

Every day you delay is another day you miss out on mastering Kotlin through interactive practice. Our comprehensive approach – from our detailed lessons to real-world problems – fast-tracks your journey to a high-paying Kotlin role. Take action now to gain the support, community, and accountability you need.

Is it really worth the money?

According to industry data, the average base salary for a software engineer is around $110,464, with top companies offering total compensation well over $250k. Excelling in your Kotlin interview can not only boost your skillset but also empower you to negotiate top-tier salaries and work with the best. We believe that the investment in your future is worth every penny.

Do you offer refunds?

We don't offer refunds under any circumstance. You can try out our free Kotlin lessons before committing to full membership.

What happens if I decide to cancel my membership?

We’d love for you to stay forever, but if you decide to cancel, we make the process simple – just two clicks and you’re done. We’ll miss you, but we understand that your journey is unique.

What happens if I decide to cancel my membership?

You can cancel your membership quickly from your account. Your access remains governed by the terms of your current subscription period.

ONE SMALL STEP TOWARD YOUR NEXT BIG THING.

Your next breakthrough
starts with a little practice.

Open a lesson. Try an idea. See what clicks.

Start learning for free 340+ lessons · 11 languages · Free to start