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  • Cracking the Coding Interview, 6th Edition: 189 Programming Questions and Solutions (Cracking the Interview & Career)
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Cracking the Coding Interview, 6th Edition: 189 Programming Questions and Solutions (Cracking the Interview & Career) Paperback – 1 July 2015

4.6 out of 5 stars (9,448)
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I am not a recruiter. I am a software engineer. And as such, I know what it's like to be asked to whip up brilliant algorithms on the spot and then write flawless code on a whiteboard. I've been through this—as a candidate and as an interviewer.

Cracking the Coding Interview, 6th Edition is here to help you through this process, teaching you what you need to know and enabling you to perform at your very best. I've coached and interviewed hundreds of software engineers. The result is this book.

Learn how to uncover the hints and hidden details in a question, discover how to break down a problem into manageable chunks, develop techniques to unstick yourself when stuck, learn (or re-learn) core computer science concepts, and practice on 189 interview questions and solutions.

These interview questions are real; they are not pulled out of computer science textbooks. They reflect what’s truly being asked at the top companies, so that you can be as prepared as possible.

WHAT'S INSIDE?
  • 189 programming interview questions, ranging from the basics to the trickiest algorithm problems.
  • A walk-through of how to derive each solution, so that you can learn how to get there yourself.
  • Hints on how to solve each of the 189 questions, just like what you would get in a real interview.
  • Five proven strategies to tackle algorithm questions, so that you can solve questions you haven’t seen.
  • Extensive coverage of essential topics, such as big O time, data structures, and core algorithms.
  • A “behind the scenes” look at how top companies, like Google and Facebook, hire developers.
  • Techniques to prepare for and ace the “soft” side of the interview: behavioral questions.
  • For interviewers and companies: details on what makes a good interview question and hiring process.
Read more
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  1. ISBN-10
    0984782869
  2. ISBN-13
    978-0984782857
  3. Edition
    6th
  4. Publication date
    1 July 2015
  5. Part of series
    Cracking the Interview & Career
  6. Language
    English
  7. Dimensions
    17.78 x 4.04 x 25.4 cm
  8. Print length
    706 pages
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Product details

  • ASIN ‏ : ‎ 0984782850
  • Publisher ‏ : ‎ CareerCup
  • Publication date ‏ : ‎ 1 July 2015
  • Edition ‏ : ‎ 6th
  • Language ‏ : ‎ English
  • Print length ‏ : ‎ 706 pages
  • ISBN-10 ‏ : ‎ 0984782869
  • ISBN-13 ‏ : ‎ 978-0984782857
  • Item weight ‏ : ‎ 1.25 kg
  • Dimensions ‏ : ‎ 17.78 x 4.04 x 25.4 cm
  • Part of series ‏ : ‎ Cracking the Interview & Career
  • Best Sellers Rank: 84,844 in Books (See Top 100 in Books)
  • Customer reviews:
    4.6 out of 5 stars (9,448)

About the author

Follow authors to get new release updates, plus improved recommendations.
Gayle Laakmann McDowell

Gayle Laakmann McDowell

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Gayle Laakmann McDowell is an author, consultant, and founder focusing on improving tech hiring for both the interviewer and the candidate.

Gayle has worked as an engineer for Google, Microsoft, and Apple. Most recently, at Google, she served on the hiring committee where she interviewed hundreds of candidates and evaluated thousands more. It was here that she discovered the disconnect between candidates, their skill set, and their interview performance.

Though her company, CareerCup, Gayle has worked with many of the top tech companies to reform their hiring practices and implement interviewer training programs.

She is the author and creator the best-selling Cracking the Interview & Career series: Cracking the Coding Interview, Cracking the PM Interview (co-authored with Jackie Bavaro), Cracking the PM Career (co-authored with Jackie Bavaro), and Cracking the Tech Career

Gayle holds a bachelor's and master's in Computer Science from the University of Pennsylvania and an MBA from the Wharton School of Business.

She currently consults, writes, and codes from her home in Palo Alto, California. She can be found online at gayle.com, twitter (@gayle), and facebook (@gayle).

Customer reviews

4.6 out of 5 stars
9,448 global ratings

Customers say

Customers find the book's content comprehensive, with one mentioning it's great for sharpening algorithmic skills. The writing quality receives positive feedback, with customers describing it as well-written.
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73 customers mention content, 66 positive, 7 negative
Customers find the book's content great and comprehensive, with one customer noting it serves as a structured guide for learning, while another mentions it's particularly useful for reviewing main topics.
Great book that helped me land a job. I don't think it was always relevant with specific companies, but the fundamentals that it provides are solid.Read more
...It’s a good book but not a magic pill, and nothing is 🙂 Of course if you’ve already solved couple of hundreds problems on leetcode you’ll be bored.Read more
An excellent book, this helped me secure my first Software Engineering job out of university....Read more
Really good book if you want to start proactively getting the foundations of data structures and algorithms and tackling problem solving for a...Read more
8 customers mention writing quality, 6 positive, 2 negative
Customers appreciate the writing quality of the book.
I used this book to prepare an interview at great company. It is well written and focused on the kind of problem one have in this situations....Read more
This book is very well written and has a lot of content (I’m still going through it)....Read more
The grammatical errors at the very start of the book are off-putting but the technical errors made in the first technical section in Big-O are...Read more
...It covers a lot of stuff and it is nicely written. Well done!Read more
Content great, quality is not
3 out of 5 stars
Content great, quality is not
The content of this book is great, there are lots of good problems, info on the interview process, and good tutorials about how to solve different problems. I wish the system design section was longer. The quality of the paperback edition is terrible, after only a week of light use sections of pages came off the binding (cheap glue), and it gradually disintegrated. I luckily got a refund, but I was surprised how quickly it came apart. Definitely go for the hardback edition.
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Top reviews from United Kingdom

  • Zen
    5.0 out of 5 stars Great for students or those looking for a job
    Reviewed in the United Kingdom on 14 October 2017
    Format: PaperbackVerified Purchase
    This book is great for computer science students or for anyone in a similar situation looking for a graduate job.
    I've used it to help me in securing jobs for my placement module as part of my degree (penultimate year) .
    It covers everything you would need to learn to prepare you for a serious interview with a large organisation such Google, Microsoft, IBM and Oracle etc...
    I've read it all and seen most of the examples come up in real interviews. Its very useful, I recommend reading it if you are serious in securing a role within a large software based organisation.
    Not only does it help with interviews but it will help you within university itself, considering you are a student. It covers various algorithms that most students will cover within university.

    tdlr; helps you secure a job and helps you study for uni.
    9 people found this helpful
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  • Shane
    5.0 out of 5 stars Thorough and very well written
    Reviewed in the United Kingdom on 27 June 2022
    Format: PaperbackVerified Purchase
    This book is very well written and has a lot of content (I’m still going through it). I’ve been developing software for over 20 years, but still found it useful, so would recommend to all levels of experience. Only slight issue is that it’s large, and heavy, and the binding seemed a little sub-optimal - that there are too many pages for a paperback book - and that soon pages may fall out.
    5 people found this helpful
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  • Ant
    5.0 out of 5 stars Regardless of whether you are an experienced developer, rookie ...
    Reviewed in the United Kingdom on 25 March 2017
    Format: PaperbackVerified Purchase
    Regardless of whether you are an experienced developer, rookie, looking for a job or not, preparing for an interview or not, this book helps you refreshing and learning on a lot of topics that can help you on your daily work. It also tricks you with a lot of problems you are called to solve - and you can compare your solutions with the ones included in the book.
    Last, if you are preparing for an interview, it also makes you look at the interview from the other side. That may explain some weird things happening during interviews, the first of which is white board coding.
    The only negative thing of this book is that it's not available in digital format.
    Helpful
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  • Marko K
    4.0 out of 5 stars Great content, bad condition
    Reviewed in the United Kingdom on 6 May 2016
    Format: PaperbackVerified Purchase
    The book's content is amazing - if you're going to have an interview, this is very likely to directly help you, even more so indirectly (if you've done the practice problems). From what I've seen from the previous editions, there's a fair amount of additional content (on cool topics), so this might be a reason to 'upgrade'. Another addition seems to be the 'Hints' section, which, while useful, is an absolute pain in the ass to use, being at the back of the book, and the numbers being scrambled around.

    The book I received also appeared to have some water damage or similar - which is both slightly annoying because of the high price (incl. international shipping), as well as the fact that the packaging seemed to be completely fine.
    One person found this helpful
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  • Mischa
    5.0 out of 5 stars Lovely little bookshop, highly recommend!
    Reviewed in the United Kingdom on 1 January 2024
    Format: PaperbackVerified Purchase
    In pristine condition with prompt delivery. Great book, thoroughly enjoyable if you like tech, that is.
    Lovely little bookshop, sent me a thoughtful note, making me feel a special buyer. I can highly recommend. Will be ordering happily again.
    Helpful
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  • Kostas
    5.0 out of 5 stars highly recommended, not only if you're looking getting good for ...
    Reviewed in the United Kingdom on 26 August 2017
    Format: PaperbackVerified Purchase
    Reading books was never my 'thing',
    but this is different! Starting with a few online videos from the author, the magic begins!

    highly recommended, not only if you're looking getting good for an interview but also for improving your self,
    how you think and how you work will be improved in many ways.
    Any level of developer you might be, I believe you have to go through the book at least once.

    It's not only about algorithms and data structures, even if you're not keen on them, go through the logic the author provides, it will make you better at thinking in in general.

    To prepare for the interviews, make sure you go through the book months before, or you might regret not having enough time to practice what you learn here!

    To prepare how to interview, it will make you and your company look great to a new candidate and it will help you on how to think of the candidate as well!

    Go for it and you'll fall in love!
    4 people found this helpful
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  • Amazonbuyer
    5.0 out of 5 stars Excellent book
    Reviewed in the United Kingdom on 18 April 2019
    Format: PaperbackVerified Purchase
    The book is reasonably priced for what it is. It is very helpful when preparing to interviews as well as a generic reference for basic algorithms and CS theory. The information is layed out logically and is very easy to comprehend, the practice puzzles are a great fun too. I often find myself doing the puzzles in some exotic languages I want to learn (eg. Crystal, Julia, Rust or haskell, etc).
    I do not have any reservations in recommending this book as an interview preparation material (in addition to wonderful resources like interviewbit.com and carreercup.com, etc). Money well spent!
    One person found this helpful
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  • Joel
    5.0 out of 5 stars So dense w info gayle is defo hot
    Reviewed in the United Kingdom on 3 September 2023
    Format: PaperbackVerified Purchase
    Got the dummies book before this what a beauty in comparison so informative on such a wide array of topics u could learn coding from this book alone. DO NOT BUY THE DUMMIES BOOKS absolute cheeks
    One person found this helpful
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Top reviews from other countries

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  • Madson Marcelo
    5.0 out of 5 stars Livro muito bom, mas fui taxado
    Reviewed in Brazil on 2 October 2025
    Format: PaperbackVerified Purchase
    Livro excelente.
    Report
  • UQI8
    5.0 out of 5 stars iyi paketleme güzel ürün
    Reviewed in Turkey on 26 May 2025
    Format: PaperbackVerified Purchase
    iyi paketleme güzel ürün
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  • Victor
    5.0 out of 5 stars Amazing book and the code is very readable
    Reviewed in Mexico on 19 May 2024
    Format: PaperbackVerified Purchase
    The perfect choice to land your next programming job, all the text, diagrams and code printed are readable and very easy to follow.
    Report
  • Justin
    5.0 out of 5 stars Changed the way I looked at a lot of problems
    Reviewed in Canada on 3 October 2016
    Format: PaperbackVerified Purchase
    This is a really good book. It has a lot of really good problems, amazing career advice, and just a lot of worthwhile content for the price. My favourite thing about this book is how it explains how you should get in the habit of being able to do the same problem different ways or look at it at a different angle. Sure, you might be able to write a one line hack that solves a problem quickly and very efficiently, but what if you had to solve it another way, using a much more unconventional approach?

    Personally I'm working towards being a sysadmin/database admin and programming isn't the main focus of my education but the more I use it the more I can see it being a required skill for employment as I approach my now graduating year. Also this book has motivated me to learn Java much better.

    Anyway aside from all the great programming advice, it also offers some really nice insights into the hiring process of very high end tech companies and also things you should do to improve your chance of being hired.. and I can tell you it doesn't always come down to how well you can solve complex problems.
    Report
  • Tatiana L.
    5.0 out of 5 stars Regalo
    Reviewed in Spain on 15 March 2024
    Format: PaperbackVerified Purchase
    Era un regalo para un futuro programador y por lo que me dijo es muy útil
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