Is Grokking the Coding Interview Available as a Book or PDF?
Grokking the Coding Interview is an online course on designgurus.io. It teaches 41 coding patterns through more than 300 problems, and every problem is solved in six programming languages. Design Gurus does not sell a PDF download of it. The course costs $79 and is read in the browser, where each lesson includes a code runner and a quiz.
Most people who search for a PDF want a cheap or offline way to study the patterns. This page explains what the course actually contains, why the copies on GitHub are a poor substitute, and which parts of the material cost nothing. If you were looking for a ranked list of coding interview books instead, that question is answered in Best Coding Interview Books and Courses.
What the course contains
The course is organized around patterns rather than around data structures. A pattern is a reusable approach that solves a whole family of problems. Sliding Window, for example, covers questions about a contiguous range of an array, and Two Pointers covers questions about a sorted sequence. Each pattern gets an introduction, a set of worked problems that grow harder, and a short quiz at the end.
Each problem has a solution in six languages, a time and space complexity analysis, and a code runner. The runner lets you write and test your own attempt before you open the answer. That is the part of the course a text file cannot reproduce. The material is also revised continually, so problems get replaced and explanations get rewritten as learners report what confused them.
Why a PDF from GitHub is a poor substitute
Copies of the course circulate on GitHub and on file-sharing sites. They are unauthorized. They also have three practical problems that matter more to a learner than the legal one.
They are snapshots of an older version. A PDF is frozen at the moment someone copied it, while the live course keeps changing. A copy is therefore missing later problems, corrected solutions, and any pattern lesson added after the copy was made.
They lose the interactive parts. The code runner, the quiz at the end of each pattern, and the six-language solution tabs do not survive a copy to PDF. What remains is a long text file of problem statements with one solution each. That is the least useful part of the course.
They give no way to check your own work. The value of a pattern course is in solving each problem yourself and then comparing your attempt with the model solution. A PDF invites reading solutions instead of writing them. That study habit is the one that fails in a real interview. The same weakness applies to unofficial copies of printed books, as explained in Is Cracking the coding interview PDF github good?.
| What you get | Live course | PDF copy |
|---|---|---|
| Current problem set and fixes | Yes | No, frozen at copy time |
| Code runner for your own attempt | Yes | No |
| Solutions in six languages | Yes | Usually one |
| Quizzes per pattern | Yes | No |
| Authorized | Yes | No |
Coding Interview Patterns is a different product
Some readers search for "coding interview patterns pdf" and expect this course. "Coding Interview Patterns" is a printed book by Alex Xu and Shaun Gunawardane. It is published by ByteByteGo, which is a different company. Grokking the Coding Interview is a separate product from Design Gurus, and neither one is a version of the other.
What is free
You do not need to buy anything to see how the patterns work. The course page lists all 41 patterns and opens several sample lessons without payment. You can judge the teaching style there before deciding. The answers section of this site has a page on each major pattern, and the Design Gurus blog covers the most common ones with worked examples.
That free path is enough to learn what a pattern is and to try one or two on your own. The paid course adds the full problem set, the runner, and the six-language solutions. Buy it only when you have used the free material and want the structured version.
How to Prepare
- Start with the free pattern pages. Read one pattern, then solve two problems of that type on any judge before you move on. The goal is recognition. You want to see a new problem and name the pattern it belongs to.
- Solve before you read. Whether you use the course or a book, write your own attempt first and time it. Reading a solution without an attempt gives the feeling of progress without the skill.
- Take the course if you want the structured version. Grokking the Coding Interview covers the 41 patterns with more than 300 problems for $79.
- Practice on a judge by pattern, not by problem number. What Is the Best Way to Practice LeetCode Questions Effectively? explains how to group problems so each session builds one skill.
- Plan system design separately. Coding patterns do not cover it. Preparing for System Design Interviews Alongside Coding Interview Prep shows how to split the time.
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