Linked List Data Structure | JavaScript

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  • Опубліковано 23 сер 2024
  • In this video we're going to learn about linked lists using OOP JavaScript (ES6 Classes). Linked lists are very popular in interview settings and are good to know.
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КОМЕНТАРІ • 398

  • @TraversyMedia
    @TraversyMedia  5 років тому +419

    I am a little rusty on algos, data structures, etc but would like to get into this type of stuff, let me know what you guys think about that.

    • @Ath9493
      @Ath9493 5 років тому +41

      Yes brad please make a crash course or even better a whole data structure series. thanks

    • @ytubelord
      @ytubelord 5 років тому +17

      Please Continue to do more.
      It makes us industry ready

    • @lancerino765
      @lancerino765 5 років тому +1

      No, You are awesome

    • @alaindimabuyo
      @alaindimabuyo 5 років тому +3

      Im bad too when it comes to algorithms I keep forgetting about these things

    • @TraversyMedia
      @TraversyMedia  5 років тому +20

      @@alaindimabuyo Yeah, they aren't things I use in my daily projects, however they are great for building muscle in that part of the brain :)

  • @andrewtelkamp1750
    @andrewtelkamp1750 4 роки тому +18

    Great video, thanks for taking the time to put this together this together @TraversyMedia!
    One small thing. For you insertAt() and removeAt() functions, I'm pretty sure you want to flip the sign and use an || operator to account for less than 0 values. `if (index < 0 || index > this.size)`

  • @Ath9493
    @Ath9493 5 років тому +112

    Hey Brad , just want to thank you for all the efforts you take for us.. Would love to have a series on data structure Javascript. Love from India 💓

  • @sushantkunkekar2155
    @sushantkunkekar2155 5 років тому +177

    Hey Brad please upload Data structures in js crash course or big course ...please

  • @parashuramakulakarni5073
    @parashuramakulakarni5073 5 років тому +60

    Most awaited. Please do more videos on data structures.

  • @network9990
    @network9990 4 роки тому +4

    I wasn't able to understand all of this after weeks in a computer science course, but 30 minutes into your video I have a much better understanding. You are great at explanations and don't over complicate topics. Thank you so much for this video!

  • @nicolegathany9626
    @nicolegathany9626 4 роки тому +28

    I laughed in this coffee shop when you said, "But don't be a dick about it!" Haha!

  • @chocolate_thunder_04
    @chocolate_thunder_04 5 років тому +54

    Can you do queues, stacks, trees, graphs, recursion? if possible Just a whole series on Data structures and algorithms

  • @emilewamsteker3412
    @emilewamsteker3412 4 роки тому +1

    This dude is a genius. Not just as a developer, but as a teacher. Thanks, Brad! Data structures is by far the most significant hurdle in programming, and I haven't been able to find anyone who can explain the concepts at a level I can understand. It's hard to teach concepts that are basically abstractions built upon abstractions. But from all the resources I've looked at, Brad has come closest, and in JavaScript no less. Bring on more data structures!

    • @dm.hol.3624
      @dm.hol.3624 3 роки тому

      nah, his voice is quite boring, it sounds like he wants to just close the editor and throw his monitor out of a window. There is an example of a good teacher/programmer - "net ninja", I strongly recommend to look at his videos.

  • @hectorserrano9314
    @hectorserrano9314 2 роки тому

    When I first watched this video almost three years ago I was completely lost and could never follow along. I took another shot yesterday and was able to understand it now. If anyone needs help, I will gladly set up a google meet call and explain it with a debugger trace if we need to. Just passing along what others have done for me in the past. Thank you Brad, this was a great explanation!

  • @jonathanpitts5091
    @jonathanpitts5091 Місяць тому

    I love your content so much. You're the only teacher that really makes things click in my mind

  • @MeshTheSnake
    @MeshTheSnake Рік тому

    the goat, feeling much more comfortable with LinkedLists after this video. Thank you.

  • @goldenfibonacci7860
    @goldenfibonacci7860 3 роки тому +1

    thank you for always being straightforward and keeping it concise. Been watching your videos and following your tutorials for the past year and they have been an immense help. much love from California!

  • @robertmacdonald3773
    @robertmacdonald3773 Рік тому

    I'm a Full Stack student and just wanted to thank you for this video! It really helped me wrap my brain around the concept of Linked Lists👊🏾

  • @alexanderpotapov2774
    @alexanderpotapov2774 Рік тому

    that's a great example of creating and working with Linked Lists on JavaScript. Thank you

  • @fromillia
    @fromillia 5 років тому

    Brad i realy don`t understand why you don`t have at least a million subscribers. You're one of the best youtube IT-blogers (for me you`re the best).

  • @moayedmustafa9673
    @moayedmustafa9673 4 роки тому

    Dude this should indeed be a series, best explanation ever on this topic

  • @poka247
    @poka247 9 місяців тому

    You make learning so much easy. Really appreciate you taking the time to make me understand this better than most tutorials out there!!!!

  • @Balowulf
    @Balowulf 5 років тому +1

    Excellent introduction to a new topic for me!
    One edge-case we're missing here for the insertAt() method is a negative value being passed as the index. I found that this can be better handled by setting up the "index out of range" conditional to be: "index < 0 || index > this.size", so we simply return (do nothing with the data value) if the index is less than 0 or greater than the size of the linkedList. In my testing that gives us the functionality we want, without a resulting "Cannot set property 'next' of undefined" if a negative index value is passed.

  • @sultanhoodie5495
    @sultanhoodie5495 Рік тому

    the best video i have seen about linked lists, simple and straight to the point. Well done.

  • @bobbymcgee723
    @bobbymcgee723 5 років тому

    I think it's great that you've started getting into this topic. I've had a lot of trouble reading about this stuff and then implementing it. But seeing it from you, then thinking about it for a bit, then going back and trying it myself, has really done the trick.

  • @nanonkay5669
    @nanonkay5669 5 років тому

    Bro, do all the data structures PLEEEEEEEAAAAAASE. I've been looking for videos that discuss data structures and here you are. God sent. Please do more. Pleeease pleeease

  • @Ash-em5pm
    @Ash-em5pm 5 років тому

    Quite glad that you are getting your feet in core CS . It's a rabbit hole from here on and it's really fun as you start diving deeper.

  • @yaniasari4716
    @yaniasari4716 2 роки тому

    15:49 "Just don't be a dick about it please." LOL! Thanks for being a real one Brad, and for always producing easy-to-follow videos.

  • @blaquebeardcoder
    @blaquebeardcoder 3 роки тому +1

    This was very helpful! Today we are learning LInked Lists and React in bootcamp, and this is a great prep for class tonight! Thank you for creating this content!

  • @irhamputra3666
    @irhamputra3666 5 років тому +3

    Thanks Brad, you did an amazing job again. Finally you did data structures and algorithm 👏🏼💪🏻

  • @ethanappleseed7530
    @ethanappleseed7530 2 роки тому

    "just don't be a dick about it please" caught me off guard. So funny. Thanks for the video, helps to hear different people talk about data structures.

  • @malibaturhan
    @malibaturhan 4 роки тому

    Best tutorial about linked lists. Not just for JS. I searched for java too and this is the best I saw. Since there is just some difference in syntax every c# or java programmer should watch this too.

  • @vaibhavmavani1071
    @vaibhavmavani1071 4 роки тому +7

    // Insert at index
    insertAt(data, index) {
    // If index is out of range
    if (index > 0 && index > this.size) { ---------this line should be like this----------> if (index < 0 || index >this.size){)
    return;
    }

    • @chanduallada2417
      @chanduallada2417 3 роки тому +1

      I checking for this comment :)

    • @badmusadeyinka1662
      @badmusadeyinka1662 3 роки тому

      That'd mean it won't insert when index is greater than zero even if it's less than the list size. if (index > 0 && index > this.size) is correct.

  • @buncha1499
    @buncha1499 5 років тому

    Of course as i've been getting into linked lists, here Brad is with a brand new course on it, love it!

  • @fanwilliam7725
    @fanwilliam7725 Рік тому

    Thanks for the tutorial, I was doing an exercise from Odin Project and can't seem to wrap my head around this list. Your demonstration was very helpful, once I figured out the head variable was the key to this linked List structure, I picked this up real fast. Thanks!

  • @rajsaroj4696
    @rajsaroj4696 4 роки тому

    First 10 mins was all i needed, my professor couldn't explain this in 3 hrs.

  • @MyOsmancan
    @MyOsmancan 2 роки тому

    You taught so much about something so difficult, even to people like me who don't understand clear English. Amazing! Thanks for simple explanation dude

  • @LenTos1337
    @LenTos1337 5 років тому

    Initially i did this data structure on my own and then watched your implementation, and this really makes your brain find different solutions

  • @rickrieger1495
    @rickrieger1495 2 роки тому

    "Don't be a dick about it" I love how honest you are man...

  • @itsshopboy
    @itsshopboy 5 років тому

    Can't wait for that. The normal projects have become quite popular here on UA-cam

  • @AnatolioMoskalenko
    @AnatolioMoskalenko 3 роки тому

    Thx you saved my life... I had a project to do for tomorrow and I knew nothing about that ... I was doing Java but the options are the same so thank you very much

  • @randydiebold325
    @randydiebold325 3 роки тому

    Thank you for doing this. Please do them for all of the Data Structures. This will be super useful for people try to start out

  • @TheYogeshkulkarni
    @TheYogeshkulkarni 5 років тому

    Thank you Brad. Aye for the series on data structures and algorithms. I watch your videos for dual purpose, to learn and to fall asleep.

    • @blasttrash
      @blasttrash 5 років тому

      r u implying that his vids are boring? :P

    • @TheYogeshkulkarni
      @TheYogeshkulkarni 5 років тому

      @@blasttrash Naah man :), videos are damn good and informative, but he has this amazing white noise like voice, so if you watch during the night, you will fall asleep in no time. Try it :P

  • @erickchavez4551
    @erickchavez4551 2 роки тому

    Thanks a lot for taking the time to explain this. I've been having a difficult time understanding the logic behind linked lists, but now I feel like I am getting it :)

  • @rajeshchauhan657
    @rajeshchauhan657 5 років тому +4

    Great tutorials , sir
    You made me a real Developer.

  • @bradliu1891
    @bradliu1891 5 років тому

    Hi Brad, I've been watching your video for years. A little surprised seeing you started algos and data structures. Thanks for sharing. Love you, your Chinese fan.

  • @vijayroy7634
    @vijayroy7634 5 років тому +1

    you just blow it!!!! How you even do it ....I must say you are X-MEN Mutant YOU JUST MADE LINKDLIST SUPER EASY WITH MOST CONFUSING MODERN JS WOW

  • @thaungthanhan5928
    @thaungthanhan5928 Рік тому

    This tutorial made linked links easy for me

  • @ytubelord
    @ytubelord 5 років тому +8

    Finally some data structures
    Thanks

  • @pablitoengineer
    @pablitoengineer Рік тому +1

    Hey, Brad, nice explanation. Thanks a lot for this excellent video. I would like just to make a small correction. It seems your range validation is not totally right. You wrote: if (index > 0 && index > this.size), but it will fail passing negative indexes. I believe the correct would be if (index < 0 || index > this.size). What do you think?

  • @nd6439
    @nd6439 5 років тому +1

    More algos + data structures please! Also some techniques + tips and tricks on how to solve problems. Your tutorials are very informative and easy to understand.

  • @eldonratzlaff
    @eldonratzlaff Рік тому

    Line 93 change(index > 0 && index > this.size) to if (index < 0 || index > this.size)

  • @mnz4829
    @mnz4829 25 днів тому

    thank you, your tutorials are helping us a lot a appreciated. 🙏

  • @maciepyou
    @maciepyou 5 років тому

    this brings me back (comp sci degree, but never got a job at it)...good stuff! I think maybe for inserting at index the bound check could be index < 0 || index>size? although using a negative index to insert from the end would be a fun exercise too.

  • @kirant9339
    @kirant9339 5 років тому

    Hey Brad , just want to thank you for all the efforts you take for us.And please upload the important topics of javascript in the point of interview please.

  • @ahmedouyahya
    @ahmedouyahya 4 роки тому

    This is my getAt method, if you find it more clear:
    getAtIndex(index){
    if(index>0 && index>this.size) return
    let count = 0
    let currentNode = this.head
    while(count

  • @kamalhm-dev
    @kamalhm-dev 5 років тому +1

    Yes! More data structures please

  • @hliasfasilakhs6765
    @hliasfasilakhs6765 Рік тому

    Amazing man. Thanks for everything. Trully amazing. i grasped everything after carefully watching the video

  • @akintaylor2414
    @akintaylor2414 5 років тому

    Hey Brad thank you so much man. It's important you know your work is helping people out here. I am more confident in my Javascript cause of your course.

  • @jonesgabriel9337
    @jonesgabriel9337 11 місяців тому

    This video was super helpful and informative. thank you Brad!

  • @kylegashler5995
    @kylegashler5995 3 роки тому

    I think that you flipped your comparator on line 46. I think you meant to look like ` if (index > 0 || index > this.size) {` which would account for possible negative indexes provided, whereas checking for positive indexes seems like the case that you are looking to execute on.

  • @MULTICODE
    @MULTICODE 5 років тому

    haha i'd been doing this in school algorithm and data structure, we used to implement double linked list. great to see that you jump into it. this course is really cool and understandable. great work . Love From Cameroon

  • @TutoFreeTime
    @TutoFreeTime 4 роки тому

    C'est la base d'algorithme de liste chaînée. Très bien expliquée

  • @MarkDyck
    @MarkDyck 5 років тому

    Sweet. This takes me back to my university days. Love it!

  • @jansherkhan590
    @jansherkhan590 5 років тому

    Hi brad Sir, without watch this video because I know you always bring great stuff that is easy to learn. I am greatfull you.

  • @josiah7686
    @josiah7686 3 роки тому

    Nice LL overview that is easy to follow and understand. Thanks!

  • @Fesser63
    @Fesser63 5 років тому

    Nicely explained! More of these computer science flavored videos are very much welcomed :-D

  • @darko.ristanovic
    @darko.ristanovic 5 років тому

    Yes! More of these please. Maybe some video about pointers and stuff like that.

  • @kunaljoshi8038
    @kunaljoshi8038 5 років тому +1

    Thanks Brad! This is a good video. Looking forward to learn data structures and algos from you :)

  • @narendrajoshi5460
    @narendrajoshi5460 5 років тому

    Thanks brad for your efforts. would love to have a series on data structures and algorithms.

  • @veaarthur3655
    @veaarthur3655 5 років тому

    Yes, Keep them comin Brad! Damn you are creeping towards 1mil subs! Good job!

  • @arditgjondedaj6143
    @arditgjondedaj6143 5 років тому

    Programming itself is an algorithm and this is useful. Thank you !

  • @bodolawale5448
    @bodolawale5448 5 років тому

    Thank you Brad. You are turning me into an awesome developer.

  • @codingfox
    @codingfox 5 років тому +6

    Please, more videos about algorithms and data structures

  • @loganaaron3722
    @loganaaron3722 2 роки тому

    Love the video, nice work as always!

  • @vishnuumakanthan9583
    @vishnuumakanthan9583 5 років тому

    Hey Brad , really love your work . Thanks a lot. A big inspiration for me.

  • @620026200
    @620026200 4 роки тому

    Thank you! Your video is even better than a book i bought

  • @abhis3kh
    @abhis3kh 2 роки тому

    THis is pure knowledge :) Thanks Brad

  • @mikevaleriano9557
    @mikevaleriano9557 5 років тому +6

    @ 7:10 I saw you almost naming your method insertHead.

  • @j.foontb.1113
    @j.foontb.1113 5 років тому

    Was waiting list data structure from you and finally. Thank you Brad.

  • @0the0ambient0
    @0the0ambient0 3 роки тому

    As always, your tutorial is the best. Thank you!

  • @fdc_8507
    @fdc_8507 5 років тому

    very nice to start on Data structures and algorithm
    there a tons of this but not much more easier than you brad
    I really enjoying to see your tutorials

  • @antoniovaldenisiobezerraju2550
    @antoniovaldenisiobezerraju2550 5 років тому +1

    Thanks for this new lesson! I loved it. I would thank much more for other lessons about those programming core subjects applied to JavaScript.

  • @oquetemprajogar
    @oquetemprajogar 3 роки тому +1

    Hey Brad. Great video. I notice a small problem(?).
    You use "if (index > 0 && index > this.size)" but if we pass a negative index, the application will throw an error. Instead of "if (index > 0 && index > this.size)", we could use "if(index < 0 || index > this.size)". What do You think?

  • @dinner4chiahao
    @dinner4chiahao 2 роки тому

    Really helpful! Thanks again Brad!

  • @JustCallMePCra
    @JustCallMePCra 5 років тому

    Yaaaaaaasssssssss!!! BRAD PLEEEEAAAAASSSSSEEEEEEEE! KEEP DOING MORE TUTORIALS LIKE THIS!

  • @1wf
    @1wf 5 років тому +1

    Do more algos and data structures! Thanks for the awesome videos!

  • @sumanthpai5579
    @sumanthpai5579 5 років тому

    Thanks a lot Brad , we are awaiting your expert videos on exhaustive list of data structures like Stacks,Queues,Circular-Queues,Circular Linked list, More operations on linked list, Doubly linked list and all its operations , Tree,Binary tree, HashTable,HashMap,Binary search tree last but not least AVL trees . This would immensly help the Javascript community over there . With bestest regards-Sumanth

  • @bushcommander2205
    @bushcommander2205 2 роки тому

    Amazing explanation, thank you so much!

  • @mahmudulhassan9043
    @mahmudulhassan9043 5 років тому

    Thank you very much Brad.I learn many things from you and i like the way you teaching us.please make a full course on data structure , algorithm and graph...Love from Bangladesh

  • @soumadip_skyy_banerjee
    @soumadip_skyy_banerjee 2 роки тому +1

    Love from India Brad ❤️

  • @RiderCogswell
    @RiderCogswell 2 роки тому

    More I love the way you explain!!

  • @rickrieger1495
    @rickrieger1495 2 роки тому

    Thank you for all the wonderful content

  • @bleakCode
    @bleakCode 5 років тому

    You explain things very well. I always come back here to learn new sorcery :P

  • @rozhbahman4002
    @rozhbahman4002 Рік тому

    best tutorial about linked list!

  • @musicmasala2391
    @musicmasala2391 2 роки тому +1

    Please make a complete series of data structures and algorithms in javascript.

  • @adamnorman85
    @adamnorman85 5 років тому

    I love the way you play with. You are talented in how to deliver information Thnx 😘 bro

  • @bhaveshpatil69
    @bhaveshpatil69 4 роки тому

    Really good man, looking forward to more such content. ThankYou

  • @AbhishekKumar-mq1tt
    @AbhishekKumar-mq1tt 5 років тому +1

    Thank u for this awesome video, please make whole series on data structure

  • @VikasChauhan-Master
    @VikasChauhan-Master 5 років тому

    Your effort and tutorial help us alot. Love to learn data structures in JavaScript from you

  • @hanzezhu7506
    @hanzezhu7506 2 роки тому

    For ppl who might be confused in the first place how we remove the node from list:
    if there is nothing that points to a specific node
    the node and all of the nodes next to it are all gone due to memory cleaning.

  • @user-ql2uu3il8d
    @user-ql2uu3il8d Рік тому

    thanks for awesome tutorial. but you have to use "break" within getAt() -> in if(count==index) condition. otherwise it traverse till the end.

  • @abduljalilabdallah9578
    @abduljalilabdallah9578 5 років тому +8

    We doing data structures now? Hurrayyy

  • @pushpakgupta7396
    @pushpakgupta7396 5 років тому

    please either make a series of all the important data structures or tell us where to find them on the internet(with code in js)...thank you for everything :)