How to ACTUALLY Master Data Structures FAST (with real coding examples)

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  • Опубликовано: 5 фев 2025
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Комментарии • 423

  • @PoojaDutt
    @PoojaDutt  Год назад +57

    📚 Learn Data Structures and Algorithms FAST: neetcode.io/?📚
    🎉How to Learn Algorithms (up next) -> ruclips.net/video/F7sPauKsZXw/видео.html 🎉

  • @asifsaad5827
    @asifsaad5827 11 месяцев назад +8

    00:22 - Data Structure
    00:41 - Array
    03:40 - Linked List
    06:04 - Hash Map
    09:27 - Stack
    11:26 - Queues
    12:30 - Tree

  • @uvideo100
    @uvideo100 Год назад +41

    Stack is Last in, first out (LIFO). Queue is first in, first out (FIFO).

  • @software-with-rosh
    @software-with-rosh Год назад +140

    This is really well done! I love the focus on concepts rather than just the “big-Oh” times. And the examples made it pretty clear on when they’re useful, so this was awesome!

    • @PoojaDutt
      @PoojaDutt  Год назад +2

      Thanks so much! I appreciate the kind words 😀

  • @davemerkury
    @davemerkury Год назад +37

    Outstanding video @PoojaDutt!!!! By far, one of the best explanations of some of the common DSA's used in code on YT! Keep it up!!!

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      Thanks so much! I really appreciate that 😀

  • @NeetCode
    @NeetCode Год назад +44

    This is easily the best intro to DSA that i've ever seen. Great video Pooja!!
    And the sponsor isn't bad either 😉

    • @PoojaDutt
      @PoojaDutt  Год назад +4

      Thanks so much!! 🎉 haha, can’t argue with that - the sponsor is pretty cool 😎

  • @evansala7814
    @evansala7814 Год назад +24

    This video was really well-produced and you used really great analogies in very approachable ways. Good work!

  • @ricopido
    @ricopido Год назад +19

    the way she explained certain topics with ease 🤧

    • @sk-kr1uy
      @sk-kr1uy 11 месяцев назад

      That's frustrating now 😂😂😂😂

    • @ricopido
      @ricopido 11 месяцев назад +1

      @@sk-kr1uy cz u can't catch up with every helpful info she has provided. yea kinda frustrating i must say 🤣🤣🤣

  • @srini9653
    @srini9653 Год назад +8

    I have learnt a lot in last 15 minutes, than those tons of class room lectures. Thank you and God bless!

  • @maedalnatour1516
    @maedalnatour1516 Год назад +5

    WoW i haven't seen anyone explain Data structures so smooth , great work keep it up

  • @chetanallapur4928
    @chetanallapur4928 Год назад +21

    Awesome, wish I had a lecturer like you in my college. We just got a mini DSA pack in this, thanks for the video. It would be great we get a whole DSA Playlist from you 🙏

    • @mktan-1223
      @mktan-1223 Год назад +1

      Same here

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      ​@@mktan-1223AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

  • @supremely450
    @supremely450 Год назад +1

    Great high level overview of most common ds. Nice for refreshing and understang at a basic level.

  • @landobando8402
    @landobando8402 Год назад +12

    Simplicity is everything! Thank you this was a great video.

    • @PoojaDutt
      @PoojaDutt  Год назад

      Glad you liked it!!

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

  • @Android-17
    @Android-17 Год назад +12

    A really great introduction to DSA, with examples.
    Thank you!

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      No problem, glad it was helpful!!

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

  • @anuragchakrabarty
    @anuragchakrabarty 11 месяцев назад

    Man this is kind of lesson one needs truly, the principles of the data Structures were explained so clearly. Thank youu :)

  • @saikrishna4026
    @saikrishna4026 Год назад +2

    Why 0's and 1's means
    It represents +5 and -5 volt ...
    Its like giving power and stopping power to the conductor....so in that way a set of 0s and 1s represents plus and 0
    ...0001 represents the bits

  • @danser_theplayer01
    @danser_theplayer01 Месяц назад

    In javascript "arrays" are done with Typed Array magic class where you can only store numbers (they can be resizable).
    And Array is actually a resizable "struct" (? or buffer I guess) of pointers that point each to their data, so the data of the whole Array is sparsely stored in memory.
    You can also just make a binary ArrayBuffer and interpret it however you like.

  • @tahmidamajumder5067
    @tahmidamajumder5067 Год назад +1

    I was finding it harder to understand DS until I came across your video. Thank you for using such amazing daily life example to visualize all the concept.

  • @miked4587
    @miked4587 11 месяцев назад

    amazing course ...u revised me all datastracture majors that i learnt in university

  • @Artofnatiee
    @Artofnatiee Год назад

    Amazing video Pooja!! I was fascinated by your analogies and examples really improved my understanding of the data structures. I am definitely checking out your video on algorithms next. Cheers!

  • @danser_theplayer01
    @danser_theplayer01 Месяц назад

    I'd like to note that "linked list" is kind of an umbrella term and nothing is stopping you from linking the nodes in it with 2 or 15 neighbours (though you might be running into graph or tree territory), creating vastly different performance considerations.

  • @DineshGgoogle
    @DineshGgoogle Год назад +2

    thanks learning for my day is from you. FYI : FIFO is mentioned as FEFO in the Queue chapter

  • @Ryan-qu4vx
    @Ryan-qu4vx 10 месяцев назад

    Very good video, in case it hasn't been mentioned the reason 0 index is the default is because it allow you to do modular arithmetic on the indices. If you've ever had the pain of trying to do modular arithmetic on a base 1 language, first I'm sorry, second you will understand exactly why 0 is the default.

  • @adismahmic2685
    @adismahmic2685 Год назад +1

    rThankyou!! A clear, well produced video is so refreshing !

  • @jovanaycart
    @jovanaycart Год назад +4

    Love your videos! The animation and editing looks so good, and the content is so helpful.

  • @Deadmanwalkingto
    @Deadmanwalkingto Год назад +1

    time 0:51 "the array size is fixed when it is created." this depends on the language you use in java Yes in javaScript No

  • @NRRRRRRRR898
    @NRRRRRRRR898 8 месяцев назад

    This is so helpful! Thank you. Can you do more videos like this ?

  • @neerajslab
    @neerajslab Год назад +2

    How you easily pronounced the word 06:50😵‍💫😵‍💫😵‍💫.
    Btw it was really very helpful because no one explains in this easy way, they are trying to make it harder stuff. So thank you so much for this wonderful content.

  • @iakhileshsoni
    @iakhileshsoni Год назад

    How beautifully and simply you've explained ☺ Amazing video Pooja👍

  • @devshah100
    @devshah100 Год назад

    Wow!
    This video is really helpful !
    Thank you soo much for making this kind of Introductory videos 🙏😁

  • @angelmiguel8496
    @angelmiguel8496 Год назад

    omg thank you so much!!!! didn't know that learning DSA was fun until now

  • @tukurhamid
    @tukurhamid Год назад +3

    Thank you Pooja.
    You made it so simple that's readily absorbed!

  • @alirezarezaei8624
    @alirezarezaei8624 11 месяцев назад

    An ArrayList is actually an array and the size is fixed, but we don't handle the resizing or ... The collection interface is handling it.

  • @celeste-is-building
    @celeste-is-building Год назад +1

    Woah, thank you so much!!!! I am currently taking DSA in school. This is a blessing.

  • @julia_rodrigo
    @julia_rodrigo Год назад

    This is such a creative video! xD thank you! I understand data structure more now

  • @abdlhkam74
    @abdlhkam74 11 месяцев назад

    Outstanding video, thank you so much for your explanation. Keep it up.

  • @chrissjohnson4
    @chrissjohnson4 6 месяцев назад

    Excellent video, your real dictionary paper atlas cover cracked me up!

  • @Madhu_P
    @Madhu_P Год назад

    I Revised entire dataStructures in just 15min from this video .... thankyou miss @PoojaDutt🙂

  • @ankit_s
    @ankit_s Год назад +1

    4:51 no renaldo is harmed in this video 😂...by the way great introduction to DSA

  • @muraliaathi6118
    @muraliaathi6118 2 месяца назад

    Great video! could you please explain difference between Data Structures and Collections? I am confused.

  • @shilpadutt5122
    @shilpadutt5122 Год назад +5

    You make it seem so easy - great video !

  • @gopesh97
    @gopesh97 Год назад +1

    Ther'es a reason why array indexing starts with 0, not a rule.

  • @furryfriendfamily7550
    @furryfriendfamily7550 Год назад +17

    can u cover graph and DP?
    BTW: this video was very informative

  • @AdrianWright-k3p
    @AdrianWright-k3p Год назад

    6:51:- I can say "Ventriculocisternostomy", but I struggle with "is". Excellent video.

  • @TheManuella3
    @TheManuella3 Год назад

    You did a great job.. 🎉I had to rewind, 😮you were goin too fast for me... I heard Michael Jordan and Garnett then, Insert, temp then link list 🤔😬😅😂

  • @vladimir0rus
    @vladimir0rus Год назад +2

    Under the hood, ArrayList uses an array. This means that removing and inserting items has a large overhead from shifting all the other items around. For that reason, we should look to avoid this method if possible.

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

  • @vladimir0rus
    @vladimir0rus Год назад

    The array starts with 0 is because the index is an offset inside the array. If you need to access the very first element your offset should be 0.

  • @BilalKhan-sq2qj
    @BilalKhan-sq2qj Год назад

    great introduction wowww, the examples were so helpful in order to understand the concepts, thank youuu so much!

  • @cnkumar20
    @cnkumar20 Год назад

    Array is a tiny container or huge.. important characteristic can't be skipped is its of SAME TYPE

  • @taniaa9248
    @taniaa9248 Год назад

    It's a crucial phase for your channel's growth Pooja, try decreasing ads.

  • @chandadutt810
    @chandadutt810 8 месяцев назад

    I have learned so much by listening to your views.

  • @KrishNamaste
    @KrishNamaste Год назад +2

    Stunned by the simplicity of this video. A perfect video to start with! Kudos!

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      Thanks so much!!

    • @KrishNamaste
      @KrishNamaste Год назад

      @@PoojaDutt wanna post this on linkedin, but couldn't find you, would you please help?

    • @PoojaDutt
      @PoojaDutt  Год назад +2

      @@KrishNamaste my linkedin is listed in the description of the channel (-:

    • @PoojaDutt
      @PoojaDutt  Год назад

      @@KrishNamaste www.linkedin.com/mwlite/in/pooja-dutt-635b76a9

    • @KrishNamaste
      @KrishNamaste Год назад

      @@PoojaDutt thank you.

  • @wixse.quisee
    @wixse.quisee Год назад

    Thats how I learned it. You gotta make real life examples of it. I used actual file folders to break down the different search algorithms

  • @avinashgardasalgonquin4371
    @avinashgardasalgonquin4371 Год назад

    Pooja, I hit the subscribe button right after watching this video. Thanks for helping me understand data structures, I've been struggling to understand them for a while now.

  • @graziribeiros
    @graziribeiros Год назад +1

    Wow loved this video! I made a career change to software development and I've a lot of stuff to learn, I'm working as a junior and I want to learn more about data structures and algorithms to get to the next level. This video is great introduction thanks❤

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      So glad the video was helpful! 😀

  • @armankhondker
    @armankhondker Год назад +15

    my man "Renaldo" is the linked list goat 😭

  • @jedi10101
    @jedi10101 Год назад +3

    LEFO???? Last In First Out, LIFO!
    holy... FEFO... i'm bailing.

  • @spartanAXA
    @spartanAXA Год назад

    I did it, I learned what an array is!

  • @emilyrodriguez.
    @emilyrodriguez. Год назад +4

    Thank you so much for this video, you explained everything so well and I appreciate the examples!

    • @PoojaDutt
      @PoojaDutt  Год назад

      So glad it was helpful 😀

  • @shivaniverma4266
    @shivaniverma4266 Год назад

    You just blown my mind after watching this you are miracle lady

  • @ninizheng2640
    @ninizheng2640 Год назад

    Hello, Love your video!! Btw, what kind of theme do you use in your code editor? It looks so pretty!!

  • @jeandyenriquerodriguezdiaz3984
    @jeandyenriquerodriguezdiaz3984 8 месяцев назад

    Great video, thanks a lot, and thanks for all the links. Best regards

  • @bhoot-eu1he
    @bhoot-eu1he Год назад

    I know why starting from 0 because it reduce one minus operation calculation each time when we finding index location of index find by base address and index*size of element but this index is come by relative index for find relative index we perform operations indexe - lower index, hear if lower index is 0 than we not need this - calculation because of this we start with 0

  • @Traveltheworldforfun
    @Traveltheworldforfun Год назад +2

    It was really helpful and what a great way to explain.

  • @aldrinjohnencina6153
    @aldrinjohnencina6153 Год назад

    I quickly understood the examples, because of the 'plates'. Thank you.

    • @PoojaDutt
      @PoojaDutt  Год назад

      Glad it was easy to understand 😀

  • @colbyberger1881
    @colbyberger1881 Год назад

    Im a seasoned SWE and all i can say is real solid!

  • @dorsaghasri5760
    @dorsaghasri5760 Год назад

    Thanks a lot✨
    It really helped me🌸🌸🌸

  • @eyerahulk
    @eyerahulk Год назад

    It was an amazing video, I would like to know more on how you edited the video. Liked all of it.

  • @AnnoyDey
    @AnnoyDey Год назад +2

    To be honest, I would give this video thousands of likes.

    • @PoojaDutt
      @PoojaDutt  Год назад

      Ahh thank you!

    • @sathyamanikanta2784
      @sathyamanikanta2784 Год назад

      Give one more... Ie 1001.... Logically that gives like to this video 😂

  • @sairishibommakanti5359
    @sairishibommakanti5359 Год назад

    This is a very good lecture ma'am, Can you please tech us the whole DSA ?

  • @motleyassortment5512
    @motleyassortment5512 Год назад +2

    So much too learn with all the different programming languages, but this video has made things a little clearer when it comes to Data structures and Algorithm.
    Thanks for the informative video!

    • @saradagarwal1827
      @saradagarwal1827 Год назад

      AP GP Best Hindi Explanation in India 💯 💯🎯🎯🎯
      ruclips.net/p/PLlCpcDWq4nK-cVs4QsgmQ4rSn6l6sHumg&si=HbXzQSceUGIoqOjT

  • @VivekYadav-up7uu
    @VivekYadav-up7uu Год назад

    can you please make a full playlist in data structures and algorithms

  • @mktan-1223
    @mktan-1223 Год назад

    Omg you are so good in explaining these topics.

  • @ezeugwunweze6065
    @ezeugwunweze6065 Год назад

    Hi Pooja Dutt. I mentioned earlier in the wrong video to please make a video reviewing the zero to mastery bootcamp. Please I will like to see this review to know if I should or I shouldn't go for this bootcamp.

  • @sajalnamdeo4270
    @sajalnamdeo4270 Год назад +2

    Very useful information, specially for beginners 👏👏

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      Thanks!! Glad you liked it 😀

  • @amysheeter877
    @amysheeter877 Год назад

    This just changed my life.

  • @yashgaud4845
    @yashgaud4845 Год назад +1

    one thing i would like to add that indexing is not just a rule it is the distance of the element from the first element so the distance between first and first element is zero hence it is the way it is!

  • @vishalnagle3292
    @vishalnagle3292 Год назад

    Very helpful video pooja thank u so much 😊😊😊

  • @CodingInterviewTV
    @CodingInterviewTV Год назад

    More people are using apps during the interview, like Coding Interview Champ to get the answers and then explain the solution to the interviewer, wondering how the success rate really is

  • @god_spriest
    @god_spriest Год назад

    Yo did great with setting examples with those items. Keep it up

  • @midhunkumara2384
    @midhunkumara2384 Год назад

    Basic knowledge acquired 🤝

  • @nanassportsvibe4584
    @nanassportsvibe4584 Год назад +1

    Me panicking because I have DSA Class this coming fall 2023, and then seeing this. Thank you 🙏🏾. I love that you used Ghana 🇬🇭! That’s weee I was born!
    Edit: Like if you feel the same way too.

  • @meghanpivane
    @meghanpivane Год назад

    damn you actually explained linked list better than my prof i did not understand it back then

  • @terrytorres5026
    @terrytorres5026 Год назад

    Most CS degrees take two semesters of data structure courses

  • @subhajitroy471
    @subhajitroy471 3 месяца назад

    Wow great job 👍

  • @SSSWorldClass
    @SSSWorldClass Год назад

    This is the best foundation to become pro 💯. Kudos to pooja🙌

  • @bwalyajunior613
    @bwalyajunior613 Год назад

    Thank You Pooja 🙏🙏🙌🙌

  • @VijayPatil-tz3cr
    @VijayPatil-tz3cr Год назад

    😮 thank you so much 👍👍

  • @markwonah4274
    @markwonah4274 Год назад +1

    You just earned a subscriber, this was really helpful

  • @___justASH
    @___justASH Год назад +1

    Loved that you made video so fast after discussion about dsa in last friday discord session🎉❤

    • @PoojaDutt
      @PoojaDutt  Год назад +1

      Ahh you noticed!! 😀

    • @___justASH
      @___justASH Год назад

      @@PoojaDutt ah well I was there that day

  • @reviewproductscambodia
    @reviewproductscambodia Год назад

    I love you sis for making this video 🙏🙏

  • @jiyachaudhary1808
    @jiyachaudhary1808 Год назад

    hey ur vedio is soo clear i just stated following u now i request u to please put one vedio which cover all the topics of c++ for revision purpose pls dii its a humble request

  • @fatimaiqra2169
    @fatimaiqra2169 Год назад

    thanks for such a clear explanation

  • @lt2075
    @lt2075 Год назад

    girl it's fun to learn with you😉

  • @jedidiahanarfi
    @jedidiahanarfi Год назад

    Oh wow, I am from Ghana, and currently studying in India.😊

  • @MyCodingDiary
    @MyCodingDiary Год назад +2

    Wow, this video is amazing!😲 Your programming skills are truly impressive.

    • @PoojaDutt
      @PoojaDutt  Год назад

      Thank you! I appreciate the kind words 😀

  • @God0f0dd
    @God0f0dd Год назад +5

    So..
    First In First Out -> FIFO
    Last In First Out -> LIFO
    They're acronyms. There's no LEFO/FEFO. It's just that when some people pronounce the acronyms as a word, they make the 'I' sound like 'ee' rather than 'eye'
    Also, I don't think many list implementations are using just singly linked lists these days. But I've also never written a line of Java, so I don't know.
    It's also important to note that a family tree isn't actually a very good analog of a computer science tree. Generally CS trees have the constraint that any given node only has one parent, otherwise you get the more general data structure, a graph.
    One more nit: a tree is not at all like a hashmap. Hash maps use a hashing function to determine a slot to store entries and then a secondary data structure to handle collisions. In fact, a hash map might end up being built of many trees! Trees are, rather, more general cases of lists in which a node can have any number of children, but may only have one parent.

    • @preethamv5858
      @preethamv5858 Год назад

      I agree..think uve not learnt the fundamentals properly

    • @officialdreamplayz
      @officialdreamplayz 11 месяцев назад

      what about FILO and LILO
      jk

  • @anaybaid
    @anaybaid Год назад

    Great video! Super informative :D

  • @davem-1944
    @davem-1944 Год назад

    Awesome explanations ! Thanks ! ❤❤

  • @obviouslyblack
    @obviouslyblack Год назад

    1:12 Please correct me if I'm wrong because I don't have formal training in CS. I just kinda learn bits and pieces as I dicked around with coding.
    This is how I imagined it when I learned about pointers and addresses. If a guy name Bob has a home at an address, then the person living one house over is Bob's 1st neighbor, the person living 2 houses over is Bob's 2nd neighbor, etc. In a way, Bob is his 0-th neighbor. I thought that computers dealt with arrays in the same way. It will find an address in its memory to be a home for the 1st number in the array, then it will house the 2nd number as the 1st neighboring address, then the 3rd number as the 2nd neighboring address, etc.