Data Structures and Algorithms for Beginners

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  • เผยแพร่เมื่อ 4 พ.ย. 2024

ความคิดเห็น • 714

  • @programmingwithmosh
    @programmingwithmosh  6 หลายเดือนก่อน +5

    🚀 Get interview-ready with my full course: mosh.link/dsa-course
    👍 Subscribe for more awesome content: goo.gl/6PYaGF

  • @chetanpatteparapu7600
    @chetanpatteparapu7600 4 ปีที่แล้ว +286

    This is the most underrated course ever. Best resource to master data structure and algorithms...

    • @iamserda
      @iamserda 3 ปีที่แล้ว +21

      'master, no' but certainly to get a basic understanding of big, ds and algo. you still get a thumbs up!

    • @renukaprincy1619
      @renukaprincy1619 3 ปีที่แล้ว

      @@iamserda qqqqqqqqqqyhncf

    • @mozart0
      @mozart0 2 ปีที่แล้ว +1

      @@renukaprincy1619 you OK?

  • @evilmonk47
    @evilmonk47 4 ปีที่แล้ว +397

    For Mobile Users
    0:00:00 Intro
    0:01:04 What is Big O?
    0:03:03 O(1)
    0:04:32 O(n)
    0:08:17 O(n^2)
    0:10:41 O(log n)
    0:13:20 O(2^n)
    0:14:10 Space Complexity
    0:17:53 Understanding Arrays
    0:21:03 Working with Arrays
    0:24:32 Exercise: Building an Array
    0:27:24 Solution: Creating the Array Class
    0:30:43 Solution: insert()
    0:35:03 Solution: remove()
    0:39:54 Solution: indexOf()
    0:42:23 Dynamic Arrays
    0:46:11 Linked Lists Introduction
    0:46:41 What are Linked Lists?
    0:51:16 Working with Linked Lists
    0:54:40 Exercise: Building a Linked List
    0:56:05 Solution: addLast()
    1:02:15 Solution: addFirst()
    1:04:28 Solution: indexOf()
    1:06:23 Solution: contains()
    1:07:28 Solution: removeFirst()
    1:11:52 Solution: removeLast()

  • @viktor-hristov
    @viktor-hristov ปีที่แล้ว +10

    39:03 in the removeAt() method the for loop's condition should be i < count - 1, because inside it's block you access items[i + 1] which in case where count == items.length will throw an ArrayIndexOutOfBounds exception. I know that count can't be equal to the length of the array because you resize it when that happens, but It is still a small mistake since your method will be dependent of your insert method so I decided I should mention it. Overall the video is very well made and explains everything with simple examples.

  • @robertstimmel1100
    @robertstimmel1100 3 ปีที่แล้ว +45

    I'm only about a half-hour into this lesson, and I can already tell that it will be very helpful. I was trying to follow along with an eight-hour video posted by a Google engineer and was really struggling. Your approach to teaching this concept is working much better for me. Thank you for posting this video!

  • @philly_zzz6147
    @philly_zzz6147 2 ปีที่แล้ว +15

    Just wanted to say how much I appreciate you as a teacher Mosh -- you communicate things so well and make math and computer science genuinely fun to learn

  • @jakubsluka4168
    @jakubsluka4168 8 หลายเดือนก่อน +4

    Im 5 yrs uinto professional programming, and what a shame, I had no clue about linked list. Thanks for this swift and useful tutorial.

  • @munapadhi8723
    @munapadhi8723 3 ปีที่แล้ว +47

    Mosh is the one best computer science teacher in the world, i love your all the courses thanks for your hard working.

  • @elij8852
    @elij8852 4 ปีที่แล้ว +16

    Mosh, in my internship over a year ago, I studied your course on React, built an awesome application, and won a lot of praise from my co-workers. I just got laid off (by the same company) and back to the job hunt. I'll check out this course. I have a lot of faith in your content! Thanks for making these for us.

    • @elij8852
      @elij8852 2 ปีที่แล้ว +1

      @shreyas k I'm now working in FAANG so it turned out well!

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว

      @@elij8852 could you please share which courses did you take from mosh or any other source specially for react and ds and algo in java? for 2022

    • @elij8852
      @elij8852 2 ปีที่แล้ว +1

      @@akshaysharma145 For sure. Since then I took his HTML/CSS, Git, and Redux courses

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว

      @@elij8852 can you please share your honest review? Also if you have taken ds and algo one?
      Are all these courses up to date?

    • @elij8852
      @elij8852 2 ปีที่แล้ว

      @@akshaysharma145 forgot about the DS and Algo one. I took that too. As far as I remember, they were all up to date when I took them, all within the last couple years. I thought they were all great, but looking back on the Redux course, I feel I could have just taken a look at the documentation to learn what I know

  • @GeekyMan
    @GeekyMan 3 ปีที่แล้ว +42

    A huge thank you Mosh! You don't know how much I love to watch your videos. It's a strange matter in me that I am never satisfied by just good explanation, I also need to have nice presentations too! Just like the one you are having. Your videos are the just perfect blueprint of the kind of educational videos I always wanted to watch...once again, thanks mosh. You really get my back everytime I need to have such nice explanations of any topic!!❤️

  • @marwalucia9594
    @marwalucia9594 2 ปีที่แล้ว +1

    for sure i had never saw such a teacher like you in this world ....... you are beyond the time

  • @UnkownUnkown01
    @UnkownUnkown01 ปีที่แล้ว +6

    Huge thanks to you, I finally understand linked lists and how to work with them, before this I was struggling a lot with them. Now I understand them very well. You're amazing for giving us this for free.

  • @user-yj9hs9cu5h
    @user-yj9hs9cu5h 4 ปีที่แล้ว +12

    I followed to here from the beginner’s course. The interactive part is the key. After doing the interactive exercises I was like aha I got it. Before that I read other’s code just fine, but cannot write one myself.

  • @ajayspatil
    @ajayspatil 4 ปีที่แล้ว +48

    Dear mosh, your courses are the best I’ve ever taken, I never thought that Data structures and algorithms would be this easy, all thanks to you Mosh!

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว +1

      have you taken the paid ds and algo java course? is it worth buying to crack interviews?

    • @rosemwangi5635
      @rosemwangi5635 2 ปีที่แล้ว

      @@akshaysharma145 I’m here waiting to get this answer too

    • @julianbecerratellez6334
      @julianbecerratellez6334 2 ปีที่แล้ว

      @@akshaysharma145 is worth every penny.

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว +1

      @@julianbecerratellez6334 have you taken the course? Are all types of data structures along with important questions covered?

  • @alexandrosntousias1496
    @alexandrosntousias1496 4 ปีที่แล้ว +58

    Mosh, you're an amazing tutor! TH-cam suggested me your design patterns lesson and from that moment I can't stop watching your videos. I'm also going to buy the whole courses from your website.
    I would like to point out a correction (or rather an omission) on this video though. Although you correctly pointed out that the time complexity of removing the last item from a linked list is O(n), for the Java LinkedList is actually O(1) since it's implemented as a double linked-list.
    Again, thank you for your awesome work!

    • @rehanansari8154
      @rehanansari8154 4 ปีที่แล้ว

      ya you're right I was also thinking the same

    • @kanchanvyas5490
      @kanchanvyas5490 4 ปีที่แล้ว

      But he said we consider the worst case always.So O(n) should be correct

    • @alexandrosntousias1496
      @alexandrosntousias1496 4 ปีที่แล้ว +3

      @@kanchanvyas5490 ​ For Java's implementation of LinkedList, the worst case for removing the last item is also constant O(1). Basically, it maintains a pointer to the last item of the list, and given that the list is implemented as double linked list it can access the item before last and easily remove the last item.

  • @3monsterbeast
    @3monsterbeast 3 ปีที่แล้ว +43

    Mosh, I have bought this course on your website and let me just say - the way you teach how to create our own methods to manipulate arrays is exactly how my d.s. & a. class in school should have taught us but didn't! We are essentially learning how the original Java classes were developed from scratch with your course! SO COOL

  • @PaladinJenkis
    @PaladinJenkis 3 ปีที่แล้ว +17

    Even though Java allows bracketless single statement for loops, it's good practice to use brackets anyway. It's especially helpful in Pull Request reviews and manual resolving of merge conflicts.

    • @goodmanwiseman303
      @goodmanwiseman303 2 ปีที่แล้ว +1

      I dont understand your last sentence at all, but I gave you a thumbs up anyway, because I find brackets really helpful.

    • @PaladinJenkis
      @PaladinJenkis 2 ปีที่แล้ว +3

      Imagine you have a bracketless if statement somewhere in loop and you add another condition to that, be it by accident or through a merge conflict. what happens now is that instead of being executed only if the condition applies, it will be executed every time. This entire concept makes no sense, it makes the code incoherent and easy to break.
      I'd be extremely cautios to take advise from someone who has such a coding style, that's what I am trying to say.

    • @colbyboucher6391
      @colbyboucher6391 2 ปีที่แล้ว

      @@goodmanwiseman303 They're talking about collaborating on projects with Git.

  • @mikedelta658
    @mikedelta658 10 หลายเดือนก่อน

    Thank you Mosh. As I'm preparing for Software Engineer position interview with FAANG company, this is too essential to refresh my knowledge.

  • @jaimerojas6578
    @jaimerojas6578 4 ปีที่แล้ว +24

    Thanks Mosh this is just what I needed to level up as a developer right now

  • @eddy4638
    @eddy4638 3 ปีที่แล้ว +2

    I LOVE YOU FOR EXPLAINING IT WITH ANIMATIONS AND MAKE IT LOOK SUPER EASY. GOD BLESS YOU.WITHOUT UNDERSTANDING THE BASICS IT IS HARD TO MASTER THE DS AND ALGOS.

  • @shafiqsoherwardy9823
    @shafiqsoherwardy9823 4 ปีที่แล้ว +29

    Sir mosh, you're way of teaching is best, I love to be as a your student.

  • @nasser_omar
    @nasser_omar 4 ปีที่แล้ว +4

    You aren't just an amazing man you are wonderful with the meaning of the word.
    A lot of thanks to you. Every single word is useful than you imagine

  • @seanli6339
    @seanli6339 4 ปีที่แล้ว +53

    should make a series on more advanced data structures... like stacks, queues, generics, heaps, trees, graphs, etc.

    • @seanli6339
      @seanli6339 4 ปีที่แล้ว +1

      @@vasachisenjubean5944 where?

    • @lama-tp9lh
      @lama-tp9lh 4 ปีที่แล้ว +1

      @@dlengelkes I checked it but it's not free help plz !!

    • @dlengelkes
      @dlengelkes 4 ปีที่แล้ว +4

      @@lama-tp9lh here is another course on youtube. th-cam.com/video/Qmt0QwzEmh0/w-d-xo.html

    • @lama-tp9lh
      @lama-tp9lh 4 ปีที่แล้ว

      @@dlengelkes !! thanks for helping me

    • @lama-tp9lh
      @lama-tp9lh 4 ปีที่แล้ว

      @@dlengelkes ​
      can u send me your e-mail

  • @Inandoutpk
    @Inandoutpk 2 ปีที่แล้ว

    You Explained Big O in the easiest way possible, Thanks M.

  • @abderazakla3ta3ta25
    @abderazakla3ta3ta25 4 ปีที่แล้ว +2

    40:47 there is a small issue in the loop in the removeAt
    (i< cout) == should be ==> (i< cout-1)

    • @suryagowrisetti1112
      @suryagowrisetti1112 3 ปีที่แล้ว

      Yes exactly. But for him it ran fine with exceptions. How is that?

  • @unstable_diffusion
    @unstable_diffusion 4 ปีที่แล้ว +48

    I was very struggling with why the binary search has log(n) complexity until I learned that CS uses logarithm base 2, unlike in math with 10. It all made sense after realizing that.

    • @internetbscop5364
      @internetbscop5364 3 ปีที่แล้ว +9

      Not quite right, the base of the logarithm is defined by the nature of the algorithm. The logarithm can use different base depending upon the type of algorithm.

    • @AtulKumar23
      @AtulKumar23 3 ปีที่แล้ว

      @@internetbscop5364 00

  • @israel4961
    @israel4961 2 ปีที่แล้ว +3

    i feel sorry for those college professor who taught us like every thing about CS is difficult to understand. Mosh changed the game and made it to easy to understand every CS courses. we pay a lot for colleges for nthn but to stress our selves with exam with 0 knowledge. but with mosh we enjoyed the free courses and gain knldg with great presentation skill. we need 100 more of you in the tech world . THANK YOU!!

  • @ricardohernandezmendez4207
    @ricardohernandezmendez4207 3 ปีที่แล้ว +2

    This video really helped me understand the linked list very easily. Thanks Mosh.

  • @EduardoMartinez-dm5pp
    @EduardoMartinez-dm5pp 2 ปีที่แล้ว

    13 minutes of video have thought me more than 1 whole week coding at hackerrank or doing coding excercises to find the proper algorythm... you sir are a master of masters

  • @tidymind6677
    @tidymind6677 3 ปีที่แล้ว

    speech delivery is perfect... no rapidly speech middle of video. awsome

  • @lumbardhsallauka5608
    @lumbardhsallauka5608 2 ปีที่แล้ว +2

    Thank you Mosh !
    Yo're so fluent in programming, very clear & easy to be understood, always positive and having fun while coding.

  • @aginamabednego
    @aginamabednego 2 ปีที่แล้ว +2

    Mosh is simply a genius. His videos on programming concepts can be understood by ANYBODY

  • @lianhong542
    @lianhong542 3 ปีที่แล้ว

    Having a basic knowledge of java and having a Data Structure course currently,
    Im learning two Course at a time.
    Thank you.

  • @mikeyknight292
    @mikeyknight292 4 ปีที่แล้ว +1

    I bought the data structures course associated with this video...and if you plan on coding with Java, I highly recommend buying it

    • @mikeyknight292
      @mikeyknight292 4 ปีที่แล้ว

      Programming with Mosh I’ve watched almost all of it. I’ve also purchase your python for developers, OOP in JS, and 2 of your C# courses. The way you teach is just so clear to me, and it helps me learn so much. Thank you sooo much Mosh!

  • @samoladapo7691
    @samoladapo7691 2 ปีที่แล้ว

    Best explanatory videos for Introduction to Programming

  • @nipun8298
    @nipun8298 4 ปีที่แล้ว +5

    Best way to get it started! I just love your tutorials Mosh . Hope you never stop posting your tutorials.

  • @travis8106
    @travis8106 ปีที่แล้ว

    There's no better feeling than when an intimidating concept clicks. Thanks Mosh!

  • @vijaypanhale8360
    @vijaypanhale8360 2 ปีที่แล้ว +1

    This tutorial from Mosh is really changed my mind to look towards Data Structures.A lot thanks and support to Mosh.Never find this kind of tutorial which is explained in more easy and detailed way. 🙌

  • @burtcharleslancaster1501
    @burtcharleslancaster1501 2 ปีที่แล้ว

    What a rabbit hole to go down from using yaml to learning about structured data thanks for the vid definitely helpful

  • @SauravKumar-ou1cs
    @SauravKumar-ou1cs 4 ปีที่แล้ว +21

    Even though i knew most of the concepts in this but learned some amazing things
    Thank you mosh

    • @sadiyanoorain9251
      @sadiyanoorain9251 3 ปีที่แล้ว

      Before starting the course
      I wanted to know in which language is he teaching?
      Is it DSA in C++?

    • @deliveringIdeas
      @deliveringIdeas 3 ปีที่แล้ว +1

      @@sadiyanoorain9251 Java. If you are fluent in c++ look at abdul bari's DSA

    • @sadiyanoorain9251
      @sadiyanoorain9251 3 ปีที่แล้ว

      @@deliveringIdeas Oh okay Thanks 😃😃😃

  • @fernandorenegado6685
    @fernandorenegado6685 4 ปีที่แล้ว +1

    For the removeLast() method I suggest to use two pointers say current and next both initialized to first. And the while(next!=null) { current=next; next=next.next;} When the loop terminates the current points to the last node. This will no longer need the creation of the getPrevious() method.

  • @englishwithtsania
    @englishwithtsania 4 หลายเดือนก่อน

    I will finish my javascript course this week but I think I haven't really understand the logic. So I check out this video. Thanks for making such a wonderful tutorial Mosh!!

  • @sebailing6219
    @sebailing6219 4 ปีที่แล้ว

    Very Perfect Java Programming Teaching Materials! Very Perfect Professors!

  • @dnyvmv
    @dnyvmv 4 ปีที่แล้ว +3

    It is a great video.
    A great tutorial.
    There is a slight error in the addFirst method.
    It is necessary to create the link between the first and second node.
    I'm sure I'll buy the course. Congratulations!

  • @kinki2474
    @kinki2474 2 ปีที่แล้ว

    Thank you a lot, I did all of this in c. I have been coding a while for hobby, but I never knew about big O & ...

  • @brianphury8509
    @brianphury8509 4 ปีที่แล้ว +2

    I wish i could pay for a full course..... but i can't.... Thank you for the freebies you make available! well appreciated you are the best teacher i have had so far

  • @bern1223
    @bern1223 3 ปีที่แล้ว

    I already have the course but I just came here to say that you are definitely more worth it than Joma-Tech charging $100 a year for his classes. Thank you for this awesome resource!

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว

      could you please share which courses did you take by mosh? also if the react course is worth buying in 2022 as the version mentioned is 16.2. And hows the ds and algo course?

  • @salaarimran9306
    @salaarimran9306 4 ปีที่แล้ว +5

    Hi Mosh! Your videos are just awesome. I have my data structure exam after a month. So it is my humble request to pls upload video of trees,hash tables and AVL trees etc quickly so that I can prepare myself for the exam. The problem is that I cannot buy the course so pls help me in this regard. Thanks!

  • @YanhaoDing
    @YanhaoDing 18 วันที่ผ่านมา

    Excellent course. And I can't wait to learn further algorithms and data structure.

  • @faisalahmedsiddiqui6517
    @faisalahmedsiddiqui6517 3 ปีที่แล้ว +1

    Brilliant Resources You Provide Mosh 👍 You are an Excellent Teacher!

  • @dm7d3
    @dm7d3 2 ปีที่แล้ว +1

    I might be mistaken but the Array implementation will throw ArrayIndexOutOfBoundException when executing removeAt. When it reaches IndexOfLast - 1, it will try to access an invalid item of the array. The for loop should be "for (int i = index; i < count - 1; i++) " instead
    Good explanations otherwise

  • @haisumusman7109
    @haisumusman7109 2 ปีที่แล้ว

    I wish all of the professors out there be teaching like You are MOSH!!!!!

  • @Laxmanforyou
    @Laxmanforyou 3 หลายเดือนก่อน +1

    Excellent knowledge
    Thank you

  • @ragnarok55
    @ragnarok55 4 ปีที่แล้ว +5

    Thank you for you uploading...i am learning python and java through u r videos but what use for me I don't have any programming job but still learning 😂 but I like it...

  • @kotic007
    @kotic007 4 ปีที่แล้ว +6

    Love the graphics - esp the coffee in the beginning! Content is always exceptional!I have the bundle :)

    • @waqasbhatti4478
      @waqasbhatti4478 4 ปีที่แล้ว

      @@programmingwithmosh hi mosh can u make tutorials on javafx or java frameworks

  • @ILovE2TRicKShoT0nMW2
    @ILovE2TRicKShoT0nMW2 4 ปีที่แล้ว +271

    I just got done asking my CS teacher does he have any sources for learning data structures he said to use the book, and then I get home to see this in my recommendations. Some thing aint adding up

    • @AnimatedStoriesWorldwide
      @AnimatedStoriesWorldwide 4 ปีที่แล้ว +16

      i just woke up after dreaming of my school time and trying to understand why they taught us arrays before array list and then this is on my subscription list...

    • @rudranarayandash1466
      @rudranarayandash1466 4 ปีที่แล้ว +10

      Prefer book instead of video.

    • @ILovE2TRicKShoT0nMW2
      @ILovE2TRicKShoT0nMW2 4 ปีที่แล้ว +8

      @@rudranarayandash1466 I have not bought the book for this semester because we were just learning java and i had an old edition of what we needed but i am going to buy the book. The book we needed was "Introduction to Java Programming and Data Structures, Comprehensive Version, 11th Edition"

    • @evangelosspyromilios5994
      @evangelosspyromilios5994 4 ปีที่แล้ว +6

      Google knows us better than our teachers

    • @marko_pasa
      @marko_pasa 4 ปีที่แล้ว +12

      Easy. Google reads your mails, listens your phone conversations.

  • @mohmarroun4477
    @mohmarroun4477 4 ปีที่แล้ว

    Sir mosh, your way of teaching is best

  • @fabricationmind6835
    @fabricationmind6835 2 ปีที่แล้ว

    You have a great teaching style, Mosh! Now I have a clear concept of Big O notations.

  • @TechnicalAnkesh
    @TechnicalAnkesh 3 ปีที่แล้ว +3

    Hey, , Mosh you really made coding simple thank you so much😊

  • @PranabLovesEveryone
    @PranabLovesEveryone 3 ปีที่แล้ว +1

    Many many thanks for free helping.....

  • @betteryourself6653
    @betteryourself6653 2 ปีที่แล้ว

    I'm speechless, you're god, It's hard to not understand what you explain to us !

  • @codevalley9511
    @codevalley9511 4 ปีที่แล้ว +7

    Thanks sir
    We all r waiting for this from a long time

  • @bogo4064
    @bogo4064 4 ปีที่แล้ว +1

    Wow, I'm taking Data Structure in Java next semester and this will be very helpful! Thanks!

    • @rozdede
      @rozdede 4 ปีที่แล้ว

      Are you going to be a programmer.?
      Which university are you going?

    • @bogo4064
      @bogo4064 4 ปีที่แล้ว

      @@rozdede I hope so! I'm attending at U of M.

  • @MandolinSashaank
    @MandolinSashaank 4 ปีที่แล้ว +6

    Finally. I was waiting so long for this. Thank you so much once again mosh 😀

  • @MarcoBenetti-mz3kr
    @MarcoBenetti-mz3kr 3 หลายเดือนก่อน

    You are truly a treasure Mosh. I know it's been said before. I can only hear this from you.

  • @sanany6783
    @sanany6783 4 ปีที่แล้ว +6

    You are awesome Mosh! Great tutorial.
    Mosh, please make a course on "Design Patterns".

  • @ishanpokhrel5972
    @ishanpokhrel5972 4 ปีที่แล้ว +7

    Thanks a lot mosh❤you cant imagine how much you have made our learning easy and efficient💘

  • @medhnhadush4320
    @medhnhadush4320 3 ปีที่แล้ว

    even your voice is soothing and it gives me motivation to watch more

  • @ZoroastrianCowboy
    @ZoroastrianCowboy ปีที่แล้ว

    Mosh my Irani dadash, I love your tutorials!

  • @NicholusDeveloper-ps2bl
    @NicholusDeveloper-ps2bl 17 วันที่ผ่านมา

    The video haven't even started and I can feel my body relaxing

  • @andrecjpite
    @andrecjpite 4 ปีที่แล้ว +1

    Well, that moment when you ask your parents for Christmas, a SUBSCRIPTION to watch Mosh courses. As soon as I saw you had a video about this topic. Instantly bought a subscription to your courses and told my parents it would be my christmas gift. :D Thanks this would be much appreciated since I am having troubles with how my teacher explain this at the university. Lots of variables with a,b,c,s,kmnnakfwofkvms and no real examples.

  • @mohdabdulhameed2347
    @mohdabdulhameed2347 4 ปีที่แล้ว +3

    Now I can teach my students Java and can even Share this video with them. My age is 24 only. This video is much useful for me as a teacher.

    • @mohdabdulhameed2347
      @mohdabdulhameed2347 4 ปีที่แล้ว +1

      @@programmingwithmosh we're can I watch Java for beginners?

    • @mohdabdulhameed2347
      @mohdabdulhameed2347 4 ปีที่แล้ว +1

      Thank you , download full video.
      Now I can watch everytime whenever I'm free

    • @harshalpatil8522
      @harshalpatil8522 4 ปีที่แล้ว

      @@mohdabdulhameed2347 dont download it watch online that will help his channel to grow more.

  • @randomrandy3059
    @randomrandy3059 2 ปีที่แล้ว +1

    Will this video help me learn what it takes to build an app?

  • @JiggiJaxxon
    @JiggiJaxxon 2 ปีที่แล้ว +1

    Simply magnificent! Excellent explanation! Thank you Mosh!

  • @DeepakKumar-uz4xy
    @DeepakKumar-uz4xy 4 ปีที่แล้ว +1

    Thank you tommorow my exam.... Thanks mosh...

  • @antonyspiano2403
    @antonyspiano2403 2 ปีที่แล้ว

    I believe teaching is a wonderful gift from the Almighty , and you are blessed abundantly for sure . Amazing videos Mosh. I have been following urs for Python and now for DS .. Thanks!!

  • @M4CARBINE556
    @M4CARBINE556 4 ปีที่แล้ว +1

    Awesome video! Thank you so much for making these videos. I'm going to purchase the full course.

  • @shiffin_chippe
    @shiffin_chippe 4 ปีที่แล้ว +1

    I was just thinking about buying your course...and this popped up

  • @oluwatoniakinjiola8379
    @oluwatoniakinjiola8379 2 ปีที่แล้ว

    This was simple and easy to follow.
    Great tutorial! Thanks Mosh.

  • @sabinasivanlivny9694
    @sabinasivanlivny9694 3 ปีที่แล้ว +1

    Thank you for your videos. You explain everything so well and clear. I hope to watch all of them :)

  • @landsgevaer
    @landsgevaer 4 ปีที่แล้ว +24

    @39:03 Shouldn't that loop end at i < count-1 ? Alternatively, decrease the count with count-- **before** the loop...

    • @alikifayat
      @alikifayat 4 ปีที่แล้ว +1

      Yes, I also noticed that

    • @redsantelices8498
      @redsantelices8498 4 ปีที่แล้ว

      Yes, I noticed it, but if you are going to decrement the count it will thow an out of bounds exception if your array has a size of 1

    • @landsgevaer
      @landsgevaer 4 ปีที่แล้ว

      @@redsantelices8498 No it won't. You'll get
      for (int i = 0; i < 0; i++)
      Then, the body of the loop will not be executed at all, which is what should happen.

    • @redsantelices8498
      @redsantelices8498 4 ปีที่แล้ว

      @@landsgevaer oh, I meant if the array size is 0.

    • @landsgevaer
      @landsgevaer 4 ปีที่แล้ว

      @@redsantelices8498 that is caught a few lines earlier where an error is thrown if index >= count. And actually, getting an error when removing an element from an empty list seems entirely justifiable... ;-)

  • @christinetapere7632
    @christinetapere7632 4 ปีที่แล้ว +5

    This is so useful specially now that we students need to study and understand programming alone because of this pandemic. Thank you Mr. Mosh that u exist! You discuss data structure and algorithms better than my instructor. 😅 To more videos to watch! 😊

  • @vshreddy9498
    @vshreddy9498 4 ปีที่แล้ว +30

    Best Python Tutorial on You Tube - Programming with Mosh
    Best Java Tutorial on You Tube - Programming with Mosh
    Best Data Structures in Java Tutorial on You Tube - Programming with Mosh

  • @JoaoNzangoii
    @JoaoNzangoii 3 ปีที่แล้ว

    It is 100% worth watching!

  • @magsadn
    @magsadn ปีที่แล้ว

    You have very helpful, great tutorials

  • @gudesreekanth6373
    @gudesreekanth6373 3 ปีที่แล้ว

    What an excellent video on Data structures and algorithms....

  • @mohammadirshad1167
    @mohammadirshad1167 4 ปีที่แล้ว +1

    Dear Mosh! Get ready for 1M followers..
    You are the best!

  • @abhijitthorat9296
    @abhijitthorat9296 4 ปีที่แล้ว +2

    Hi Mosh, Your way of teaching is very beautiful. Keep creating such videos. I just want to point out one mistake in this video which I found while practicing the code. In your Arrays section, in "removeAt(int index)" method you have used for a loop as ,
    for (int i = index; i < count; i++){
    items[i] = items[i+1];
    }
    which will not work if you add 6 elements in the array and remove the last element from it. eg. in the Main class if you write :
    array.insert(5);
    array.insert(53);
    array.insert(50);
    array.insert(56);
    array.insert(57);
    array.insert(58);
    array.removeAt(5);
    Then, your code will give "ArrayIndexOutOfBoundException" (As the array is full and the count variable has been initialized to '6' and inside for loop you are trying to shift element at 6th index to 5th index. But at the 6th index element is not present, because the array is up to 5th index only).
    If we replace that code with the below code it will work for all the cases.
    for (int i = index; i < count-1; i++) {
    items[i] = items[i+1];
    }

    • @pareshmkulkarni
      @pareshmkulkarni 2 ปีที่แล้ว +2

      Good observation Abhijit. Also, in the same removeat methond, after completing loop, count-- is added to remove last item which is still there. However count is just a tracker and does not really remove anything from Array. Because it is being used in Print method, it is giving impression that array does not include it. Please comment.

    • @wingcomic4608
      @wingcomic4608 2 ปีที่แล้ว

      The reason Mosh's demo doesn't show the out of boundary error in this video is because the items actually has a size of 6. It just got the size doubled from initial 3 to 6 when inserting the 4th item, based on his implementation of insert ().

  • @hariprasathpanneerselvam5361
    @hariprasathpanneerselvam5361 3 ปีที่แล้ว +3

    Hi Mosh, Make Data Structures and Algorithms video using Python, It would be easily understandable and your courses are great🤩

  • @girish90
    @girish90 4 ปีที่แล้ว +3

    this is a great tutorial! I absolutely loved it.

  • @thepetiteotaku
    @thepetiteotaku ปีที่แล้ว

    This is an amazing course! Although I had to tweak my code when watching the solutions, I was able to write a lot of the implementation myself based solely on the hints given and the theory behind the logic. I will most likely buy the course as I want to learn more about the other data structures. Thank you

  • @SalehGoodarzian
    @SalehGoodarzian 2 หลายเดือนก่อน

    Hi Mosh, I have learned a lot from you. Am thankful to you...just a quick question, How did you record your screen and yourself? Which software did you use? I would be thankful if you could let me know. Best wishes and regards

  • @loverboyhk
    @loverboyhk 4 ปีที่แล้ว +1

    I bought the course. Awesome teaching!

  • @ABHIJITMSAWANT
    @ABHIJITMSAWANT 2 ปีที่แล้ว

    Super cool explanation, I think this is the best video that explains time complexity concepts so easy. I wish you were my engineering professor :)

  • @haythamkenway8343
    @haythamkenway8343 4 ปีที่แล้ว +1

    I think at 8:27 it should have been O(n+m). Because we could've a million size long string, as O(n) omits "m"(String size) it basically fails to measure the efficiency of the algorithm.

  • @LarsErikRisholm
    @LarsErikRisholm 2 ปีที่แล้ว +2

    This course really helped clarifying some things i needed to know. Thanks a lot! (btw i also enrolled in the ultimate java and python courses and loved it!) Keep up the great work!

    • @akshaysharma145
      @akshaysharma145 2 ปีที่แล้ว +2

      could you please share your review about the ds and algo course on the website?

  • @haidarali6806
    @haidarali6806 4 ปีที่แล้ว

    You Are the Great Sir You really Make the thing easy... Thank You sir that is the First Time I understand that what is DataStructure

  • @noxy281
    @noxy281 3 ปีที่แล้ว +1

    This was really helpful thx!

  • @Amir-se1om
    @Amir-se1om 4 ปีที่แล้ว +1

    Hello From Iran

  • @zurabidarsadze9042
    @zurabidarsadze9042 2 วันที่ผ่านมา

    In Array class implementation, when array is full you create new array with a double size, what about remove elements? You must check, if size is less then half of current array size (or something like that) you must resize array