What is AlgoExpert?

200 Hand-Picked Questions

Coding interview prep is a numbers game that many candidates lose. We've hand-picked 200 of the best coding interview questions to prepare you for every interview you could encounter.

100+ Hours Of Video Explanations

Algorithms are tough to learn on paper. Each of our questions is accompanied by a two-part video explanation to maximize learning. That's over 100 hours of content, all at your fingertips.

Data Structures Crash Course

Data structures are the pillars of coding interviews. Our video series gives you the foundational knowledge you need to be well-versed in all of the popular data structures.

Solutions In 9 Languages

Not everyone speaks the same programming language. All of our solutions come in 9 different languages: JavaScript, TypeScript, Python, Swift, Kotlin, C++, Java, C#, and Go.

Feature-Rich Coding Workspace

Coding out solutions to algorithm problems is the best way to practice. Our coding workspace lets you type out your answers and run them against our test cases, right here on the website.

Space-Time Complexity Analyses

Understanding how much memory an algorithm uses and how fast it runs is crucial to passing coding interviews. All of our explanations include a rigorous space-time complexity analysis.

4 Curated Assessments

Real coding interviews are timed and have multiple questions. We've curated 4 assessments to reflect a real day of coding interviews, filled with variety and appropriate difficulty.

Mock Coding Interviews

Nothing compares to doing a real coding interview with a real human being. We let you do mock coding interviews with other users on a shared workspace, right here on AlgoExpert.

Recruiting Profile & Certificate

Landing technical interviews can be harder than passing them. Once you earn the AlgoExpert Certificate, we refer you to tech companies so you can directly start their interview process.

A Better Way to Prep for Coding Interviews.

With Great Outcomes.

Our customers have gotten offers from awesome companies.

200 Questions Spanning 15 Categories.

If you want to ace the coding interviews, being well-versed in all common data structures and popular problem-solving methods is paramount. With 200 questions spanning 15 categories and 4 difficulty levels, we've got you covered.

• Arrays

• Graphs

• Tries

• Linked Lists

• Binary Trees

• Strings

• Dynamic Programming

• Searching

• Sorting

• Greedy Algorithms

• Recursion

• Famous Algorithms

• Heaps

• Binary Search Trees

• Stacks

Our Videos Set Us Apart.

The truth is that interview questions and algorithms are difficult. Even more difficult is trying to understand the inner workings of a complex algorithm from a book or from a poorly thought-out video shot on your grandma's camera. Our crisp 1080p videos boast crystal-clear audio and are strategically divided into two parts to give you the most comprehensive explanations to questions. That's over 100 hours of content specifically tailored to make interview questions and algorithms easy.

Big O Notation Made Easy.

Time Complexity

We address all of these things, and more.

Space Complexity

All of our video explanations dive deep into space-complexity to turn you into a well rounded Big O expert.

A Better Way To Land Interviews.

Earn the AlgoExpert Certificate. Get referred to tech companies.

No more InMail messages that get ignored.

No more cold emails that go nowhere.

No more job applications that get no attention.

With AlgoExpert, preparing for interviews helps you land interviews.