Data Structures & Algorithms, Tamed.

The ultimate data structures & algorithms focused software engineering interview prep.

Software Engineering Interviews | Michael

Interview Pen was one of the highest-quality resources I used to study for my Software Engineering internship search.

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Interview Pen | Software Engineering Interviews, Data Structures & Algorihtms
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Data Structures & Algorithms At-a-Glance

154+

Questions

45+

Hours of Content

8

Programming Languages

15

Essential Categories

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Your Software Engineering Interview Toolkit

data structures & algorithms
Handpicked Problems

We teach you the most important concepts in the fewest questions. We have taught this curriculum 3-times over and weave related concepts between topics effectively.

full coding environment
Full Coding Environment

We support the most popular programming languages so you can get hands-on experience implementing solutions to each problem. The best way to learn is by doing.

AI teaching assistant chat
AI Teaching Assistant

Have a context-aware AI-assistant on standby to help you as you study. Your assistant will be aware of the problem, solutions, your workspace code, any active errors, and more. Ask it anything!

optimal solutions
Optimal Solutions

We provide solutions to all problems we teach. We start with the brute force & incrementally reach an optimal solution. Solutions are translated into multiple languages.

exceptional explanations
154+ Exceptional Explanations

We offer a sizable amount of high-signal content. Our library took nearly a year to aggregate in-full.

Live Library

We are constantly editing, pruning, & expanding our content library. Each content item takes 4-8 hours to produce. We are constantly going to work to make the library better.

1-1 problem support
1-1 Problem Support

Join our Discord to receive peer & instructor support. When you get stuck there is always someone to help you continue forward.

Exceptional Video Explanations

Challenging topics need clear, methodical, explanations. You have to do the actual math, you have to go deep into the why behind approaches.

This is why we take a ground-up approach to any concept we teach so it just “clicks” in our students’ minds.

We see every lesson as a conversation. Taking a student from beginner to advanced understanding incrementally.

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Table of Contents

Problem Introduction
0:00
Initial Thoughts
3:14
Decision Tree
4:27
Some Observations
7:31
Simulating an Optimal Game
8:12
Implementation: Simulating All Decisions
10:52
Complexities (Simulating Decisions)
15:42
Simulating Optimal Play
16:28
Recurrence
18:52
The Global Subproblem
23:09
Concrete Walkthrough
23:28
The Top-Level Decision
27:37
The Core Idea
30:05
Implementation: Optimal Play
30:19
Complexities (Optimal Play)
32:50
Recap
34:18

Context-Aware AI Teaching Assistant

Stuck on a problem? Curious how a solution works, or just want a deeper understanding? Talk to your own personalized AI teaching assistant.

Have a 1-1 conversation with a context-aware AI briefed on your code, the problem statement, any errors you are facing, potential solutions, & more.

24/7, 365, you can ask your assistant questions as you learn.

Content Overview

Data Structures & Algorithms Library

Time & Space Complexities Category Icon

Time & Space Complexities

10 videos

Primitives Category Icon

Primitives

6 videos

Arrays Category Icon

Arrays

7 videos

Strings Category Icon

Strings

8 videos

Linked Lists Category Icon

Linked Lists

12 videos

Stacks & Queues Category Icon

Stacks & Queues

5 videos

Trees Category Icon

Trees

18 videos

Heaps Category Icon

Heaps

6 videos

Searching Category Icon

Searching

5 videos

Hashtables Category Icon

Hashtables

7 videos

Sorting Category Icon

Sorting

8 videos

Recursion & Backtracking Category Icon

Recursion & Backtracking

11 videos

Dynamic Programming Category Icon

Dynamic Programming

18 videos

Greedy Algorithms Category Icon

Greedy Algorithms

9 videos

Graphs Category Icon

Graphs

14 videos

We Support Core Languages

(with support for more underway)

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Python icon
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Golang icon
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Time & Space Complexities, Simplified.

Every solution we offer is annotated with time & space complexity bounds.

Every video we deep dive into the full derivation of upper (and lower bounds) when necessary.

You will walk away equipped & confident in your ability to reason about any problem’s time & space complexity bounds.

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Big O Complexities

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Interview Pen played a huge role in finalizing my understanding of many concepts I faced in my technical interview rotations.

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