How I Cracked the Coding Interview (In Under 3 Months)

Cracking the technical coding interview is one of the most important steps to becoming a software engineer, and I did it in under 3 months as a freshman in college. In this video I lay out a roadmap to study for the coding interview and walk through how I would solve these problems.

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Chapters
00:00 I Cracked the Coding Interview in Under 3 Months
00:17 Coming Up…
00:25 Easy Coding Interview Questions
01:13 How to Prepare for the Questions
02:00 Dealing With Curveball Questions
02:59 Medium Level Interview Questions
03:18 How I Learned Data Structures & Algorithms
04:43 The Math Behind Data Structures & Algorithms: Big-O Notations
05:54 Big-O Cheat Sheet
06:38 LeetCode Prep for the Coding Interview
07:44 Step 1 - Coding Interview
08:17 Step 2 - Coding Interview
09:31 Debugging Incorrect Test Cases
10:06 Step 3 - Coding Interview
10:36 A Resource for Practicing Alone
12:26 Optimizing for Time Complexity in the Code
14:07 Solution Explanation
15:11 Hard Level Interview Questions

[quicksilver_x]

Wow under-rated channel. I've been using the algo cheat sheet for years now. I wish during my time we had that algo visualizer to really get the concept.

[jenex]

the bug was, in the inner loop you did range(i, len(nums)). It should be range (i + 1, len(nums)), cause the first argument in the range function is inclusive.

[asim]

Best Vide you dropped yet ! Very Helpful I appreciate it brother 💯

[karthiksubramanian]

Thanks for the video Sajjaad. I will also add that as someone who mock interviews friends, thinking about how you as a human would solve a problem helps inform an algorithm

RE system design, I found system design primer repo (by donnemartin) really helpful for learning the concepts

[haroonbilal]

Hey Sajjad bro, I'm 17 and will graduate high school next year. I have decent cybersecurity and Python skills, but I'm confused about choosing a major. Should I pursue cybersecurity, software engineering, or AI as a career? Kindly can you give me any advice please?
I am really inspired by you and your work ♥️.

[EmpireOfNerds]

Can you make a similar video for knowing when to apply for internships, level of knowledge etc?

[truthseeker]

In under three months? U r awesome bro!👍👍 I cracked Beyond The Cracking Coding Interview book in under 3 weeks. 😢 I think I found my fault. 🕺🕺My roadmap is not like this >> 0:20 my road map is linear (flat) like this > A (Start) B (Finish) I will try your Road Map!

[samanbrar]

Thank you always for motivating freshmen like me!
A question: you mentioned in earlier video that you decided not to continue with AWS for a reason, could you please be able to share that.
(As myself, a comp sci student, learning aws cloud, and had plan to go to amazon)

[amrullahwahedy]

I personally struggle with learning the concepts without understanding their use case.
Can you please make a video about how data structure and algorithms help us in our projects.
Thank you🎉

[InterviewAssistantAI]

Shadow Interview Assistant can also help you!

[giwargis]

Thank u for an amazing video!!
I'm a full-stack developer who decided to specialize in the backend I only know Python and JavaScript but the problem most of the backend jobs require either Java or C# so I decided to learn Java. Am I doing the right thing even tho I love Python more?

[srh]

hey man l've been following your video for a while now, just wondering if you can give me more info on machine learning/ deep learning and maybe even ai training model, or if you can link me some resources or videos that really helped to break into ML. And do you have any tips and suggestions on how to make the ML project stand out, apart from having high accuracy with the training model? Thanks so much and sorry for the long question.

[Salah-YT]

Thank you so much for the helpful video! I have a question, though. You made a video three years ago about Amazon, so I'm a bit confused about how you managed to crack the coding interview in under three months now. Did you just refresh your knowledge? Thanks again!

[KratosRottie]

Is there a school you recommend that can be faster? Or a program? I’ve seen boot camps but I’m not sure if that would be enough to get a job.

[ahmedelsharif]

For first/second year level internships (Explore program etc.) do you think interviewers would focus on Easy Level Questions?

[anishsarkars]

Hi Sajjaad, thanks for the suggestions,

As a 2nd yr bachelor's student, how can i crack swe internship roles.. would love to connect 1:1 if possible?

I'll appreciate that