AVL Trees & Rotations (Self-Balancing Binary Search Trees)
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- Опубликовано: 5 июл 2024
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This kid's older brother is one of my little homies from college. Now i'm reviewing algorithms and the little little homie is teaching me. Both impressive young men who are making their families proud.
haha hey
Looks like this homie stopped the videos because there is no money in teaching for free. That means he gained wisdom and is using his knowledge to make a profit instead... Homie is getting wise.
Hey man just realized I never actually thanked you, I passed my interview and your videos were so much help!!! You are awesome!
great - flourish in life friend
@TheAntloo, how many times have you used an AVL Tree in your job of two years? 🙂
Check out the free DSA Mini-Course 👉backtobackswe.com/five-day
Table of Contents:
Introduction 0:00 - 2:07
Tree Height 2:07 - 3:51
Node Balance 3:51 - 4:21
Balance Calculation Practice 4:21 - 7:32
Breaking The AVL Property 7:32 - 8:32
Rotations 8:32 - 12:52
Right Rotation 12:52 - 15:58
Left-Right Rotation 15:58 - 18:12
Left Rotation 18:12 - 18:50
Right-Left Rotation 18:50 - 19:44
Support Us At backtobackswe.com 19:44 - 20:37
Errors:
0:19 - 1:41 The is not a BST, this is fixed at 1:41.
11:08 NIT: The purple triangle is > y (strictly greater) and > x
I hope this helps someone. If there are any mistakes let me know and I'll update the "Errors" section.
Clear, concise, and invaluable. Thank you for uploading this.
thanks - sure
This is the clearest explanation I have seen on Balanced Trees so far. I was trying to learn this topic back in march and I could not find a good resource to understand and I dropped this topic. Now today I picked it back up and I found your video. Thank you so much !! ---> Subscribed
sure!!
Just few moments ago I was really missing you and your content and now your video is here!! Welcome back buddy :)
hey.
First time here.
Was searching info about AVL, had problems with understandings it. And occasionally find this channel.
Man it is incredible. Totally awesome. It's so clear for me after your explanation.
I've also checked the list of your videos. And I am joining this great channel and will advise it to my friends!
Thanks for the content!
thanks and great to hear
The clarity of your explanation is astounding. Thanks a bunch!
Haha! thanks. Try out the free mini course on our website - backtobackswe.com/
Thank you for this video! finally I understood AVL trees!! I will keep commenting each video I see that helped me to keep supporting you! you are great!
great
Before i watch the video again gotta let you know, this was hands down the best illustration ideo for AVL trees. The illustrations are easy to follow. Cheers.
Perfect explanation of AVL rotation !! I've watched the videos about this subjet in French, Korean and English. And only your video makes me understand CLEARLY and PERFECTLY. Thank you so much.
Glad it helped 😄 We also have a Free 5 Day DSA Interview Prep Mini-Course - backtobackswe.com/ 🎉
Started BSTs in class and we have to implement our own AVL tree. The textbook didn't cover left-right or right-left rotations nearly as well as you did. Thanks so much for this video, I will be citing this in my project.
sure
I know this video came out awhile back but if you see this, thank you so much! I just didn't understand it in class and when my professor explained it again to me. You literally made this such an easy concept to get!! Thank you !!!!
Glad it helped!
OMG the way you explained it around 12:30 makes so much sense. I don't need to memorize anything, I just need to think through whether each triangle is less than or greater than x, and the same thing for y, and then it's so easy to perform the rotation. Thank you!
Thank You, Glad you liked it.
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends :)
Hey you probably get this a lot, but you helped me so much to prepare for my interview. I have been non-stop preparing for my coding interview at my dream company at Microsoft. I've been prepping 8-10 hours a day every single day on LeetCode and watching your videos. You have helped me so much in learning the fundamentals and learning how to approach different coding problems. I'm glad to say that I did get an offer from Microsoft yesterday! Again, I thank you so much. Your videos were the main reason I was able to get this offer. You have truly changed my life.
great to hear. grow strong.
hey! im new in coding, can you explain me how did you prepare and any advices for beginers like me? i would appreciate a lot!
I got a Microsoft SWE II position from your awesome videos! Thank you so much for your videos, I really don't think I would have been able to do it without you.
great to hear. mission accomplished. May we get a testiomonial from you? You can message Ben at www.linkedin.com/in/bephrem and we can go from there. If not all is well, congratulations.
@@BackToBackSWE I sent an invite from my LinkedIn with a msg. Not sure how you want to do the testimonial pending your response.
I have a test tomorrow on binary trees and this video really helped me out so thank you so much! !!
great
I found your channel smack in the middle of my data structures and algorithms class. We just started covering this. Excellent!
That is awesome!
I've never waited eagerly for the next video of any of the youtube channels literally except yours. Every syllable of your explanation makes sense and is very clear. I wanted to request video for few leetcode problems, try to include these in your line-up. Dungeon Game, Path Sum III, Frog Jump. Thanks in advance!
thanks! but we likely wont be able to do those. We have a lot of organizational things going on that have us busy
I actually like you being on the frame. Helps to focus more and real lecture feeling
nice
Thank you, I never understood AVL trees from my university courses. Your explinations made it crystal clear for me.
I lost my job due to the covid-19, now learning and prepping for Tech interviews. Life is tough these days. Also, please please upload more videos on Linkedlists . ( all if possible - from start to end )
message us we can work something out - backtobackswe.com/contact
@@BackToBackSWE Done. Please check.
absolutely loved the way you explain the concept here thanks a lot this really helps me
It's definitely the best course that I've ever seen about AVL tree.
thanks
Benyam, you are PRO man! I am fan of your teaching style! Your videos have helped me a lot in my prep. Now I have come back for yet another interview, going though your videos first for a quick learning.
May this channel be in everyone's recommendation! RUclips you better be listening! XD
thanks - we are humbled
This Is the crystal clear explaination of AVL trees I have seen on the Internet....!! You are awsome!!
sure yo
@@BackToBackSWE stackoverflow.com/questions/63649722/satisfying-properties-of-nodes-after-rotation-in-avl-trees I have this question after watching your video It would be really helpfull if you can answer it or any one reading this could answer.
Clear yet thorough. Thank you man!
Sure!
I'm just commenting to help your videos rank. :) Great stuff and I appreciate all the time you have invested in this channel.
haha tru and yeah jeez its been a year, almost 2
Hey man, don't comment alot but I just wanna thank you for being a big part in me getting an internship. The work you do is invaluable, and I for one really appreciate it. Keep grinding these out, you got a life long sub in me
Congratulations Where did you get the internship at
Yeah eger to know @Eish
Congrats mate! Keep hustling
yo welcome back!!! thanks for helping us. ;)
sure.
Hey buddy, you are amazing. Surprisingly I could end up with a solution to a Salesforce coding interview. All with the method of thinking and approach that you convey.. I dont think I would ever get the crux with any other site. Thanks a lot . Please keep posting videos , would love to hear you
Amaze. Keep grinding!
This is the simplest vid I’ve seen on this, thanks!
Glad you liked it!
THANK YOU SO MUCH FOR THIS VIDEO!! Very well explained and clear :) Helped me a lot!!!
OMG SO CLEAR sooooo clear guys watch it , this is the best video for understanding the AVL tree~!
Happy Holidays 🎉 No, you are the best Raywei! We'd love to offer you a 40% Off our exclusive lifetime membership just use the code CHEER40 - backtobackswe.com/checkout?plan=lifetime-legacy&discount_code=CHEER40
Hey hey!!! My friend is back,
Welcome ✌️✌️☺️☺️
hey.
thank god !!.. finally you are back.. good to see you buddy
hey.
NEVER STOP UPLOADING
OK I WON'T
Your explanation was very clear, thank you very much you helped me a lot
my god i understood his explaination and i feel fun doing this work it kinda feel like rubiks cube. this channel is a magic of understanding
Thank you. You explained it much better than my professor
thanks
Its hard to find a teacher who explains better than you SWE. Also, +1 on the tries tutorials would love that
thanks and ok
Your tutorials save me every time!
Thank You, Glad you liked it.
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends :)
Most awaited video, thanks Benyam ❤❤
sure.
Thanks
I used to hate avl trees a lot because of rotations. But this video fixed it
great.
Dude Where are you these days, no video for 8 months........you ok buddy?
This author explained AVL trees better than our professor in 2 lectures. Thank you!
Happy Holidays 🎉 Thank you for your kind words, Delinester! We'd love to offer you a 40% Off our exclusive lifetime membership just use the code CHEER40 - backtobackswe.com/checkout?plan=lifetime-legacy&discount_code=CHEER40
professors are like not-teaching teachers at schools stay away from them, go after assistants.
After spending 12 hours non-stop trying to fix just one bug in my AVL tree (with parent node pointers) I've decided to take a step back and watch this video, and this is so much help! I am going to try again now after eating
This video really helped me to understand AVL tree! thanksssss :)
Great!
awesome video, my professor should watch these before lecturing lmao. Thank you!
lol thanks!
Thanks a lot man, my professor's explanation was needlessly complicated so this helped a lot.
Hi 👋
Haha! why don't you explore our free mini course - backtobackswe.com/
Hey bro , I have loved your teaching methodology , I have started visualising the algorithms , I love you man thank you so much.
Could you try to cover up segment trees if possible
great. and yes.
Yayy ! Welcome BACK Ben !
hey.
Thank you so much for the best explanation I ever had.
Amaze! do try our free mini course - backtobackswe.com/
Hi I just can say thank you so much.your video was a great help to me:)
Glad to hear that :) Check out the free mini course on the website - backtobackswe.com/
best dude ever.
Thank you man
Great video! You're a great teacher. Keep it up!
Thank you, glad you liked it 😀
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends 😀
short and precise thank you
love your video! so clear! thanks.
sure!
oh wonderful explanation, tysm !!
This is amazing. thank you so so much, now i know how to do rotations
Absolutely stellar explanation
thx
Thanks for the great explanation
Thank you, great explanation!
Glad it helped. We'd love for you to check out our Free 5 Day DSA Interview Prep Mini-Course - backtobackswe.com/ 🎉
Thank you for this amazing video!
thanks a lot this video helped me understand avl trees!
Thank You, Glad you liked it.
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends :)
Best explanation of this thank you!
Very nice! Thank you!
Great explanation. Very clear, thanks.
thanks, glad it helped! There are other codes at - backtobackswe.com/ check it out. Would love some feedback
Look who's back :) Great as usual Ben
hey.
finally a natural explanation
Thank you thos videos are extremely helpful ! Keep going you're the best
haha! thanks. Give a shot to the free mini course on the website - backtobackswe.com/
Very clear thanks!
Thank you, glad you liked it 😀
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends 😀
I have a really important interview tomorrow. If I remember I’ll come here and update.
Hey, how was your interview?
Welcome Back Brother ...Love from INDIA
love from 'MURICA 🚜🌽
@@BackToBackSWE Learnt new word "MURICA" LoL
@@adarshsharmanit356 nice
Thanks, you explained it better than my prof! xD
my professor literally puts me to sleep, thank you so much for this video
Haha! explore our full DSA based courses with promo code ‘RUclips40’ with a 40% discount - backtobackswe.com/pricing
Hey! I’m also a UMD student, great video! I was wondering what camera do you use to record and what mic do you use?
Thank you
hey.
Camera: www.amazon.com/Canon-Mirrorless-Camera-EF-M15-45mm-Video/dp/B079Y45KTJ
Mic + Mount: www.amazon.com/gp/product/B07K1XSDZP/ref=ppx_yo_dt_b_asin_title_o04_s00
iPad: www.amazon.com/gp/product/B07XL7G4H6/ref=ppx_yo_dt_b_asin_title_o02_s00
Pencil: www.amazon.com/gp/product/B082V9VFFZ/ref=ppx_yo_dt_b_asin_title_o02_s01
Very clear bro, thank you
Thank You!!
Do check out backtobackswe.com/platform/content
and please recommend us to your family and friends :)
Awesome as always. Ben is Back :)
hey.
Thank you, it definitely helped alot but still i cant figure how do i determine if i need a left or a right left rotation? Like on what do i have to look to know which to use?
thank you very much sir. very nice explanation indeed. is there a subsequent video that demonstrate code examples?
this is the best explanation
thanks
This is a great video!
thanks
Wow what a sleek explanation
haha
he's back!
hey. I never left, just been working on backtobackswe.com.
Thank you very much bro
helping me through data structures
Happy Holidays 🎉 Thank you for your kind words, Wrongnicholas! We'd love to offer you a 40% Off our exclusive lifetime membership just use the code CHEER40 - backtobackswe.com/checkout?plan=lifetime-legacy&discount_code=CHEER40
i exited out my prof zoom lecture to watch this. thank u
haha! try our free mini course to explore more cool stuff - backtobackswe.com/
Great video. Quick question though: Typically to calculate balance factor should we not do height of right - height of left. This way if its a left heavy tree you can tell because the balance factor will be < -1 and a right heavy tree will have a balance factor > 1?
Great work!
Thx
Yay
Back to back is back
hey.
Love this video
so clear! Thank you!!!
Thanks! Do explore the free mini course on our website - backtobackswe.com/
Thx a lot!
Welcome back, Ben!
hey.
@@BackToBackSWE Yo Ben, is the discussion section on BTB SWE still active? I've posted some questions on this video.
Very helpful!
Thanks bro....this is a great content. It will be useful if we have an example where we have say 5 or greater number of nodes and left or right right heavy with left->right or right->left rotation explained. Again, many thanks for this content. You just rock.. Another suggestion is whether we could explain some practical applications of each DS/Alg as and when you cover them in each video. Like now I know what is AVL tree's properties-> Self balancing. Now where is this Self balancing mandatory in some real world problems. Yes we could google this out or get from intuition. But it will be good conclusion to any video you present, once you have this explained. Again, just a thought. Not an absolute requirement. Thanks Bro. Have a good one!
sure - ok, and u too
Which app on iPad r u using for demonstration? Seems handy
Your videos are awesome...Please launch a competitive programming course..💁
thanks and I personally can't
amazing video!!!
Thank you, means a lot 🎉 You can also check out our free DSA course - backtobackswe.com/