The Complete Guide to Big O Notation & Complexity Analysis for Algorithms: Part 1 of 2

In this video, we provide a detailed overview of the motivations behind Big O, how Big O works, the rules to implement Big O, how Big O is used for time and space complexity analysis, and how to optimize our solutions using Big O.

0:35 Learning Objectives
0:57 Why Use Big O
5:22 How Big O Works
9:59 Rules to Simplifying Big O
15:20 Applying the Rules
16:29 Time Complexity Examples
22:21 Space Complexity Examples
25:51 Complexity Analysis of Recursive Code
30:48 Using Big O to Optimize a Solution
40:06 Recap

[apall]

(2021-05-15) this video is seriously underrated, so far (271 likes only)
These guys make 1st class teaching, these 2 videos of total of 2 hours worth weeks of academic teaching!

Keep up this great work guys!

[louisecrowe]

Thank you so much Alvin - that is a fantastic explanation!! So clear and engaging :)

[xerxius]

This is better than most of the paid courses.
Amazing Work Alvin !

[FirdausHSalim]

No day have I ever understood BIG Oh this FAST.
Thank you so much for this.

[jeaninepalicte]

Very clear explanations and crisp video quality! Thanks Alvin ✊

[vthwin]

Alvin is really good at explaining concepts that I struggled to understand for a long time, thank you to him and Coderbyte for making this video possible!

[gknt]

This is literally amazing. For the first time, I understand what it is and how to calculate it. Thank you Coderbyte!

[deanoneill]

Best video on Big O I have seen on YouTube. Thanks.

[jamie]

I've known about Big O for a long time and I've just sort of known tips and tricks on why something is o(n^2) double loops! etc. But I've been looking for how to really understand this topic and a lot of other videos kind of just breeze by this. This really broke it down and really taught why a run time is a runtime. Thank you so much best video i've seen on this!

[madver]

I must say that it makes me so happy and I feel fortunate if I find any topic by Alvin! He is the best teacher out here on internet! I wish he could cover design and architectural patterns as well.

[simpleisbetter]

by far the best video to understand Big-O

[btsbloodsweatandtears]

Thank you and thank you again I was soooo lost but this video really help me. As a first gen who has no one to help them in college thank youuu soooo much

[programer]

It's really beautiful, neat & clean video.
Thanks brother for such an amazing video. God bless you.

[alonzathompson]

One of the best videos I have seen on BIG O

[elidc]

Hi thank you for this tutorial!!! I rarely I comment on video tutorials such as this, but I can't thank you enough because you helped me finally understand complex ideas (in my opinion) such as Big O notation. Thank you again for explaining it to an understandable level. I CLICKED THE LIKE BUTTON N TIMES, where N is an odd number hahaha

[hazelcaling]

The best explanation! Thank you Alvin!

[ContactmeTHERADBARD]

This video was what I needed all along

[dnm]

Thank you so much Alvin. You broke it down well.

[EwertonSilveiraAuckland]

Amazing... simple and easy to understand. Thanks

[Eric-bcnt]

love this video, simple examples with mixing usages of different important JS paradigms to explain Big-O