Introduction to Algorithms ( Playing a Counting Game ) 0:25 - What Is an Algorithm? 6:50 - Guess the Number 12:46 - Defining an Algorithm 21:15 - Evaluating Linear Search 29:58 - Evaluating Binary Search Introduction to Algorithms ( Time Complexity ) 36:11 - Efficiency of an Algorithm 42:39 - Constant and Logarithmic Time 49:11 - Linear & Quadratic Time 53:48 - Quasilinear Time 56:23 - Exponential Time 1:04:23 - Determining Complexity Introduction to Algorithms ( Algorithms in Code ) 1:08:22 - Linear Search in Code 1:18:02 - Binary Search in Code 1:28:06 - Recursive Binary Search Introduction to Algorithms ( Recursion and Space Complexity ) 1:41:14 - Recursive Functions 1:46:18 - Space Complexity 1:53:07 - Recap of Algorithms in Code Introduction to Data Structures ( Exploring Arrays ) 1:57:44 - Introduction 2:00:40 - Array Basics 2:06:20 - Accessing a Value in an Array 2:13:06 - Array Search, Insert and Delete Introduction to Data Structures ( Building a Linked List ) 2:22:57 - What Is a Linked List? 2:36:15 - Adding Nodes to a Linked List 2:44:05 - Implementing Search 2:48:34 - Inserting a Node 2:55:20 - Removing a Node Introduction to Data Structures ( The Merge Sort Algorithm ) 3:03:06 - Merge Sort 3:11:13 - Splitting Into Sublists 3:14:27 - Recursively Merging Sublists 3:21:34 - Ensuring the Correctness of Merge Sort 3:28:17 - Evaluating the Runtime of Merge Sort Introduction to Data Structures ( Sorting a Linked List ) 3:35:40 - The Merge Function 3:40:31 - The Divide Step 3:47:56 - The Conquer Step 4:00:11 - Evaluating the Runtime 4:08:46 - Recap of Introduction to Data Structures Algorithms: Sorting and Searching ( Sorting Algorithms ) 4:11:02 - Sorting and Searching 4:14:56 - Bogosort 4:20:36 - Selection Sort 4:27:11 - Getting the Run Time of a Program 4:31:17 - Recursion 4:41:18 - Quicksort 4:47:12 - Implementing Quicksort 4:52:34 - Merge Sort 4:59:45 - Actual Run Time for Sorting Algorithms 5:02:00 - Big-O Run Times of Sorting Algorithms Algorithms: Sorting and Searching ( Searching Names ) 5:07:42 - Linear Search 5:12:04 - Sorting Names 5:14:04 - Binary Search 5:19:22 - Timing Our Search Scripts 5:20:41 - Big O Runtime of Search Algorithms

This is why good professor matter. I don't even know how to code yet, but the course is so interesting, I watched 46 min without even realized it.

Watching this is 2024 and the quality and value of this video is 1000%, I am not even bored one bit.

The future of clean, clear, coherent precise education starts with videos like this. More success and good wishes to people who make such videos and for free to the general public. This is one genuine and sincere way of serving humanity and educating people. Kudos and thanks for this wonderful video. Much love

What a course it's been. Learned the basics in a very fun way. When i started, just wanted to take an idea of dsa. But now learning and making notes side by side. Hats off to uh 💯

These lessons are high quality, clear, & concise. Everyone hit the tip jar if you can. Good job.

literally the best Algorithms and Data Structures course that has ever made.

This is such an amazing video!! So much value, I wish most courses had this same amount of quality! Thank you for this!!!

I am not a programmer nor a CS student. I am a personal trainer and physical therapist who happens to like casual coding in C. Pasan, i am starting linked list right now and i can't say how much value you added to my knowledge in two hours and 20 minutes. I already feel like i could re-write most of the programs i wrote in a better way. Thank you so much. I'm looking forward to learn from the rest of the course.

If anyone like me lost it at the final 3 lines in merge_sort() @4:00:00, make note that 'current' and merge.head point to the same Node object for the first pass of while-loop. When current.next_node is reassigned to a non-None value that first time, merged.head.next_node points to the same value. Hope this helps

I understand that thinking in algorithms makes coding much more approachable. You guys did a great job

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You guys are doing great work, giving free education to us!

Extremely simplified explanation... very easy to follow along and understand every single word..... Thank you very much for this!

I am extremely impressed with the exceptional quality of this course, especially considering its remarkable price point of FREE. As someone who primarily learns through reading and images, I can confidently say that this is one of the best courses I have ever taken. If you are on the fence about enrolling in this course, let me assure you, it is a decision worth making. Don't hesitate any longer, take this course now!

19:46 What is Algorithms 21:42 What make good Algorithms (Correctness and Efficiency) 23:42 34:34 definition of Binary Sarch 39:24 Growth rate 40:09 What is Big O 56:40 58:47 Brute force algorithms

For those who are curious, we round 9/2 = 4.5 to 4.0 at 1:23:20 because python follows the rule of Banker's Rounding (or Gaussian Rounding), which rounds a half to the nearest _even_ whole number. Therefore, 4.5 rounds to 4 as does 3.5.

Not even the courses you have to pay for have this quality.

i just started trying to self teach myself into a junior programmer and this is so great for starting, thank you

just finished this and so many things make much more sense now! also, Pasan is an excellent instructor. loved the brief intro to concept, demo and then recap of concept before moving on. thank you!

For the first time I have spent a full hour watching a tutorial on KZfaq without any breaks. Wonderful instructor. Thank you.

I like the sound effects and the fact that the instructor states often that he does not really know a given topic so that I am not upset with my learning capacity limitations. lol

You're just such an amazing tutor! Can't thank you enough for providing this content for free!

I love this course! Brilliant and an instructor I can understand.

Love Treehouse!! This is so awesome to see. I took some of their FSJS content and loved it. Highly recommend!

Your way of teaching is awesome, this is one of the best course I ever took :)

I finally found someone that speaks my language . I completely understand every word. I completely understand everything word that your saying without rewinding back multiple times. Your the first that I would consider mentor

A few mins into the presentation, already knew it was going to be gold. Well done!

Thank you so much for this amazing tutorial! I’ve been struggling with algorithms and data structures for a while now, but your explanations and examples made everything so much clearer. I really appreciate the time and effort you put into creating this course. Keep up the great work!

So I've been going through python videos and this has REALLY HELPED me understand this concept. Algorithmic thinking is pretty fundamental to programming and this has helped me figure everything out so far.

Such an amazing video, it helped me understand way better what data structures and algorithms is. I'll be reading Grooking algorithms next to get more familiar with this topic! The only downside to this video, is that there's an exercise on the section: "Algorithms: Sorting and Searching", that for some reason I couldn't run it locally. Other than that this is an amazing video on data structures and algorithms.

My 8-year-old brother's watching along excitedly - this is great!

When I took computer science in a community school it was hell. Teachers were learning how to code 5 minutes before class then would yell at us if we didn’t know sthg. Other teachers were boring so many students gave up. I finished after 3 years totally clueless. This was back in the 1990s where not many of us could afford computers. I have ptsd from that time but like to look at coding as a hobby now that I have more time on my hands. Thank you to these courses.

Extremely relatable right off the bat. Almost every position that's given me a chance with a coding test has been algorithm related and despite having a degree, I had such a sinking feeling of imposter syndrome.

He is great at articulating his points. Thanks for being clear and concise.

Huge THANK YOU to FCC for making such high quality content available to everyone for free! As a professional Software Engineer, I get immense value from these vids!

"Between you and me, the answer is 3" John :👁️👄👁️

I've completed the fundamentals in python and I was planning on learning DS and algos...this made my day

Thank you so so much for this, I loved every minute of it😌! What a way to start the new year!🥳

This is seriously awesome!! Clear crisp explanations!! Thanks for this!

holy cow . i’ve been searching for an all in one dsa course other than MIT’s. THANK YOU

This is some high quality content there, and that too for free. I'm beyond grateful. Thanks guys.

Your presentation is exceptional and your content is precise and concise. Thank you very much.

This is what I love about Team Treehouse. Their way of explanation is easy and simple.

You're an amazing instructor Thanks so much for this content

My daughter has begun her coding journey and will be soaking this up really soon. Thank you for providing such excellent free education.

Thank you very much for creating and sharing content like this. It's incredibly helpful!

This is gold! Thank you for uploading such content for free, it covers all the core concepts of basic Data structure and Algorithms and easy to understand. Great work!

I am 5 minutes in and I can already tell that this is an excellent video. Thank you so much for making this. Wish me luck.

Worts Case Scenario - 25:21 Brute Force - 57:44 Password - 59:37 Linear Search - 1:09:50 Binary Search - 1:18:10 Binary Search2 - 1:27:58 Recursion - 1:41:17

This is actually one of the best tutorial's I have ever seen!

Thank you for a wonderful lecture ,your explanation and examples are great professor

one entire semester in 5 hours.....

I’m so grateful to find this, this course is actually giving me tough time in school, but with this video an area of the course is been covered! But we’re dealing with the mathematical view of algorithm time complexity. Any one with idea where I can go check that out?

The book analogy for recursive functions is so clear, thanks!

Awesome content with great attention to its production for its purpose. Well done!

Oh my, I can't keep up with all the videos lol!! Thanks for all the great work you guys have been doing, it means the world for people like me who don't have access nor the means to proper education where I live.

This is so much easier to understand than that Cormen book on Algorithms and Data Structures. I felt depressed after trying to study that... Now I feel happy thanks to this video. 🙏🙏🙏🙏👍👍👍

This way of teaching with infographics is really cool. They should upload more like these.

I REALLY need tutorials like this. My biggest weakness is algorithmic thinking, it's not the technical aspects of getting the code running at all. It's the calculations to power the code in a way that's useful.

The best channel for beginners. Really great teaching. Save money.

I have used this tutorial over 10 times and it is great. I cant appreciate enough. I noticed something in the merge sort algorithm though, the verify() function will return false if the unsorted list has duplicates. This is as a result of "return list[0] < list[1] and verify_sorted(list[1:])" . I think it should be "return list[0]

Your presentation and narration are top quality. Thank you!

The best course I have seen yet. Great work!

This is one of the best DSA course for beginners.

Love the expression on his face when John says "Is it one?" 11:32

This is the most elaborate course I've ever seen.

Very well made course! Great animations, wonderful presenter.

I can't believe we are getting these stuff for free on KZfaq. Thank you තව ලංකාවේ කොල්ලෙක්. ගැම්මක් තමයි.

Wow. This is good! Thanks a lot for translating scary words into simple and beautiful ideas!

Brilliant course! Thank you so much. Finally it makes sense.

Really appreciate your content. Love it. I wish Colleges or Universities need instructors like you who boast the student's career 4x times faster.

This is incredible, I’m learning so much!

Finally Algorithms and Data Structures in Python from two reputable sources. I really appreciate your efforts!

This guy explained SO MUCH BETTER than my uni lecturer!!!

I don't remember paying for KZfaq Premium. This is the best Data Structure and Algorithm tutorial on the internet

This curse is an actual masterpiece!! I watched the full video till the end and i'm just so thankful. Wonderful professors, keep up the good work. Cheers from the Dominican Republic 🇩🇴

I really appreciate your pedagogy sir !!

Okay, I love this video and I am only 50 minutes into it. I really love seeing visualizations and graphs while explaining.

I really like the way you teach. Its crystal clear and thank god I found this video

Great course. At 2:46:00 Inside the search function, the "else" can be removed as you have a return in the if statement. Same functionality, less code and clean code :) Appreciate the effort behind the course and sharing it for free !

Holy moly I'm having this course this semester. Coincidence I think not 😆

This in-depth analysis helps a lot!

Awesome and knowledgeable content is here Thanks to FCC contributors

One of the best channel on youtube. Thanks for ur efforts.

Thank you for this high-quality, *PERFECT* course

The best channel about coding nowadays on KZfaq.

At 2:53:00 in the Linked List The code at position 80 should be current=current.next_node

You're literally saving my life guys. Thank you so so much.

This guy is an awesome teacher. He really has a gift

This explanation was brilliant, thank you very much for sharing this video

Fantastic course, thank you!

Anyone distracted by that interesting looking staircase in the background, as the video starts😅 (if that’s what it is? 🤷🏾‍♂️). All jokes aside - excellent, excellent video!

I really like this guy teaching style, he is also very articulate, I understand every word perfectly. This made me look up more material from him.

Best way to teach live practical even the video is rec Love it Thanks for this knowledge ❤️

Thank You for your free course.👍👍 Do you have any plans to upload full university level long course on "Theoretical computer science" ?

Wow. He’s a great teacher. Love the graphics

Thanks for this course! It was a great pleasure to watch it!

As a somwwhat non-beginner, I quickly used the progress bar to a point where the content felt non-repetitive. It's like algorithmic inception.

Hello, firstly thank you for this great lesson. Secondly, I found a small bug in your `verify_sorted` function at the timestamp 3:24:15. This won't work if you have two same numbers in the list. Correct comparison should be list[0]