3 Types of Algorithms Every Programmer Needs to Know

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ForrestKnight

ForrestKnight

День тому

It's my thought that every programmer should know these 3 types of algorithms. We actually go over 9 algorithms, what they are, how they work, real-world use cases, complete with code examples and explanations, but they fall under 3 categories, 3 types of algorithms you should know.
Sorting Algorithms - used to rearrange elements in a list or an array in a certain order. We discuss bubble sort, insertion sort, and merge sort.
Searching Algorithms - used to find or retrieve an element from a data structure, or to determine its existence and location in the dataset. We discuss linear search and binary search.
Graph Algorithms - used to solve problems related to graph theory, where data is represented as a collection of nodes (or vertices) connected by edges. You probably know these as trees. We discuss depth-first search (dfs), breadth-first search (bfs), Dijkstra's algorithm, and A* algorithm.
So, why are these algorithms you should you know? Because they form the foundation of efficient problem-solving in computer science. Their study not only enhances programming skills but also deepens analytical thinking. And they’re instrumental in optimizing software performance across a wide range of real-world applications. I hope you enjoy the video and learn a thing or two!
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Resources🔎
visualgo.net/en
www.toptal.com/developers/sor...
motioncanvas.io/
0:00 Why algorithms are important
1:35 Sorting Algorithms
5:44 Searching Algorithms
8:06 Graph Algorithms
12:29 Want more algorithm videos?
------------------------
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КОМЕНТАРІ: 563
@mossabDiae
@mossabDiae 2 місяці тому
The first video I watch on your channel, subscribed in 24 seconds because you started sharing value quickly without a long unnecessary intro.
@rodoxsta
@rodoxsta Місяць тому
Same here, but I subscribed after reading your comment!
@FernandoSLima
@FernandoSLima 6 днів тому
same
@lukashuth9730
@lukashuth9730 3 місяці тому
Really nice and informative video while still being short without "unnecessary" information, i really liked it
@yourma7055
@yourma7055 3 місяці тому
True
@JustDevInc
@JustDevInc 3 місяці тому
This was very nicely done. The visuals and your commentary allowed me to understand the algorithms in ways that previous videos I’ve watched haven’t. They’d either be too basic of an overview to get what’s happening, or too code based without visual cues to help you understand. This was a perfect balance of simplicity and depth. Great work!
@wille4986
@wille4986 3 місяці тому
Your enthusiasm is infectious and reassuring - knowing someone else finds this all just as fascinating to dive into but presented with the quality as you do is a privilege to watch. Excellent video and I can't wait to see more! Thank you!
@User.Joshua
@User.Joshua 3 місяці тому
You certainly have a knack for explaining things in an easily digestible way. Thanks.
@nitheeshraajar393
@nitheeshraajar393 3 місяці тому
Just want to let you know @7:35, you say Binary search is O(log n) but on the chart its pointing to O(n Log n). Very nice video 👍
@jonarielmaravilla1503
@jonarielmaravilla1503 3 місяці тому
nlogn if data is unsorted i guess.
@nitheeshraajar393
@nitheeshraajar393 3 місяці тому
​@@jonarielmaravilla1503 then yup nlogn to sort then logn to search
@lagmaker
@lagmaker 3 місяці тому
​@@jonarielmaravilla1503 you cant use binary search on unsorted array
@deraxelturrelkeign
@deraxelturrelkeign 3 місяці тому
@@jonarielmaravilla1503 Binary search couldn't function (effectively) on unsorted data without sorting first. An unmodified Binary search will either find what its looking for in O(log(n)) like a normal binary search (the algorithm just happens to go the right direction), potentially falsely return -1 or I believe get stuck in an infinite loop.
@murilourso
@murilourso 3 місяці тому
He even said "for sorted arrays"
@Kamuisakeu
@Kamuisakeu 2 місяці тому
The quick and concise video with visual representation together with the code sample was right on the spot! Cheers to that and give us more!
@softcolly8753
@softcolly8753 3 місяці тому
The only time I have needed to implement a sort algorithm in 21 years as a software developer was for interviews or university exams. Never needed a graph algorithm at all. These are all coded into libraries these days, though it's somewhat useful to understand them, understanding how to index a database properly (applying them) is far more useful.
@gustavofagundes8994
@gustavofagundes8994 3 місяці тому
exactly
@lukaszantoniak9046
@lukaszantoniak9046 3 місяці тому
agree
@drakkor1000
@drakkor1000 3 місяці тому
amen
@cbc700
@cbc700 3 місяці тому
This was quite a nice video, especially the visuals. However, I agree with the sentiments of this thread. In three decades of coding, I've only had to implement a sort algorithm a handful of times. So rare in fact, I can't remember the last. Interesting to understand, but softcolly is right -- mostly seen in school and interviews. Your delivery is quite good -- going to check out your other vids.
@joannehart9624
@joannehart9624 3 місяці тому
Back in the late 70s when I started coding, we often needed to implement sorting algorithms into our code. Sometimes because the operating system did not have a system sort, and other times because the overhead of setting up the code to use the system sort made it easier to just code a sort into the program. Back then CPU and memory were at a premium, so we had rules such as if the program needed to search through a table of more than 100 entries, the program had to sort the table then preform a binary search. Fun times to look back on. That said, those approaches have stuck with me throughout my career and oft times helped me fix resource heavy applications that wouldn't finish within the time frame demanded by business. 🙂
@guitarman813
@guitarman813 3 місяці тому
One of the best videos I've seen for an introduction and basic explanation of important algorithms in computer science and programming. Awesome job! 👏
@aggumbi
@aggumbi 3 місяці тому
Wonderful video. As a scientist going through a programming journey, the way you show the visual and explain the code (with the highlights, etc...) is extremely helpful. More algorithm videos please! ❤
@BillyLongshot
@BillyLongshot 3 місяці тому
love the intro and general framing of this video: no glam dreams about becoming a software engineer but the actual nitty-gritty that actually makes you one
@matias-dev
@matias-dev 3 місяці тому
Loved the video, straight to the point with the necessary information, i had this kind of algorithms shown to me in programming classes in college and i always dread how they were shown, sometimes people overcomplicate the initial step of a bigger problem (probably not in a badly intentioned manner), i think your video is a great way to get started on these topics!
@GideonBryceTan-od4tq
@GideonBryceTan-od4tq 3 місяці тому
Well explained and condensed -- it's like crash course for algorithms. Great stuff!
@Radio_N_Casa
@Radio_N_Casa 3 місяці тому
Truly enjoyed this, simple enough and yet leaves me wanting more. Well done
@flpflpflp
@flpflpflp 3 місяці тому
Hey man, I've been a subscriber for a few years now. I think this is the content I liked the most. Keep up the great work!
@ademromdhane1271
@ademromdhane1271 3 місяці тому
Amazing how easy you can simplify this hard algorithms visually , good job i really like it
@gregoryhost5188
@gregoryhost5188 3 місяці тому
This was really amazing and great timing, I'm currently struggling with algorithms especially trying to figure out where and how exactly to use them.
@typicallunchbox6934
@typicallunchbox6934 3 місяці тому
Awesome video, the quality and breakdown was great. Definitely going to be checking out more of your content :)
@techfixer1543
@techfixer1543 3 місяці тому
Thank you! Your lucid explanations of these algos shows your in depth knowledge, and the accompanying graphs are fantastic and hit a home run in visually expressing the underlying concepts. And you keep the viewer engaged with your peppering of being flawlessly snarky. I had to rewatch the part on the Dijkstra's algorithm to let it sink into my ever evolving brain in "thinking and reasoning" mode. Fantisic vid overall!
@grassifuentes
@grassifuentes 3 місяці тому
This is excellent. I took algorithm designs a year ago and this refreshed my memory by a lot and made me want to look into it for practicing again. Thank you!🙏🏽
@OGNord
@OGNord 3 місяці тому
Dude this was gold. I’m currently on week 3 of CS50s course and I’m in love with C and programming so far. This is a very succinct explanation of each section! Thank you very much
@thobiaslarsen8336
@thobiaslarsen8336 3 місяці тому
Finally someone who is happy with C and doesn't cry 😃 Thank you for showing hope 🙏
@zoeherriot
@zoeherriot 3 місяці тому
@@thobiaslarsen8336 C rocks. Great language.
@KaneryU
@KaneryU 3 місяці тому
idk why this comment made me so happy you go man! (or girl, lol)
@thobiaslarsen8336
@thobiaslarsen8336 3 місяці тому
Probably because there is a lot of negativity in the field right now, so its very refreshing to see something actually positive 😂
@youMatterItDoesGetBetter
@youMatterItDoesGetBetter 3 місяці тому
C is cool.
@wolfmansaw
@wolfmansaw 3 місяці тому
I've been coding for 55+ years and I'm so glad I found you today! Great stuff!!! Right into the code and no fluff! I think you define what it means to be a programmer!!!👍
@hunterlewis5566
@hunterlewis5566 3 місяці тому
I'm fairly new to computer science and programming and I love this and would love to see more of this, you got my support and vote of confidence!
@surferbum618
@surferbum618 3 місяці тому
Thank you for making this. Yes please, more of these!
@alialibaba6672
@alialibaba6672 3 місяці тому
Hey Forest, great wor and marvelous graphical representation. Please continue
@adnelfigueroa1227
@adnelfigueroa1227 3 місяці тому
Awesome video! Loved your explanation and the fact that you incorporate funny comments. Exited to see more.
@estevanprado2005
@estevanprado2005 3 місяці тому
Love this vid. nice guide on common and frequently used algorithms, definitely going to sub to your newsletter, thanks!
@ZiaCodes
@ZiaCodes 3 місяці тому
Hey hey, Your talking style is amazing! The way you explained the algorithms is fabulous! I love it!
@davidrichman2117
@davidrichman2117 3 місяці тому
Thank you, Forrest Knight! Just review for me, but I wanted to say that you have a wonderful down to earth way of presenting that I really appreciated. Keep up the good work!
@twisthard
@twisthard 3 місяці тому
Nicely done and presented! A couple of these were not presented in my CS Data Structures and Algorithms course, and as such this was a great view into those. One algorithm I never really got the hang of was hash tables. Now you have me thinking about that again. Well done!
@techsalesandmore3649
@techsalesandmore3649 3 місяці тому
never seen your channel before. Totally loving your animations!!!
@jynx0riZ0r
@jynx0riZ0r 3 місяці тому
Best explanation of dynamic programming ever. Thank you. ;-)
@baky5372
@baky5372 3 місяці тому
Whatever video editing software you are using is really cool. i loved watching the code being stepped trhough and then visually seeing what was occuring above it.
@alivaliev5152
@alivaliev5152 3 місяці тому
Right when I needed it most, this gold! Keep on this!
@semilife
@semilife 3 місяці тому
Hey Forrest, first video of yours I have watched. Great presentation style.
@alexrubio9507
@alexrubio9507 3 місяці тому
Man I wanna say that you're so talented at making these videos. It is so clear that you love doing them. Please keep posting, you re a rockstar!
@slayergaming5421
@slayergaming5421 2 місяці тому
Great video! I really like the visual depiction of Dijkstra's and A*.
@samiamgrnegsnhamnonftercan2ham
@samiamgrnegsnhamnonftercan2ham 20 днів тому
Great vid, would love to see more on algorithms!
@DoNsMaK190
@DoNsMaK190 3 місяці тому
thanks for all those efforts that made to make those graphic explanation
@ctaulelei
@ctaulelei 3 місяці тому
You're explanation was better than anything I've ever heard! I love how you used Dynamic algorithm to explain the content 😜. First sub I've done in a while for this kind of content. Heading over to look at the rest of your stuff now. Thanks for your time and effort.
@christianmboula8923
@christianmboula8923 26 днів тому
Superb content, excellent delivery! where were you when I was taking DS a few decades ago!
@mrskbbs
@mrskbbs 3 місяці тому
Would love to see more stuff like that! Definitely subbing
@j.p.bikes22
@j.p.bikes22 3 місяці тому
Really good video, it’s a great summery of what I learned in collage. Will definitely rewatch this sometime in the future 👍
@nasirusanigaladima
@nasirusanigaladima 3 місяці тому
I would love more of this, it's very interesting and informative
@max_masterius
@max_masterius 2 місяці тому
It's so visual! I've got the motivation to look deeper. It's a long time after my university that I actually touched this topic.
@escapist818
@escapist818 3 місяці тому
Oh man I would love a deep dive video on hashing algorithms, your stuff is great!
@francisharrington3155
@francisharrington3155 Місяць тому
Forrest, your videos are damn near perfect. I've watched 5 in a row and subscribed to your channel and the newsletter. Probably gonna pull the trigger on the notion studious next.
@fknight
@fknight Місяць тому
I appreciate that! Hearing this really means a lot
@rogueronin1010
@rogueronin1010 3 місяці тому
Make a new playlist for all algorithms in depth videos. Thanks for the bite size explanation.
@adye88
@adye88 3 місяці тому
Thank you for this content. I really enjoyed it. pls keep putting out more!
@pingmetal
@pingmetal 2 місяці тому
Straight to the point! Great video!
@ringringlord
@ringringlord 2 місяці тому
very straight to the point and zero clutter
@vishnum4852
@vishnum4852 3 місяці тому
Great videos. Liking this nitty gritty concepts which are not popular in yt We need more videos like this man..
@rnzqt
@rnzqt 3 місяці тому
Great video, nice summaries. Thanks!
@user-ex8hb7hr3h
@user-ex8hb7hr3h 3 місяці тому
Forest, just discovered your channel. Love your content and style.
@spikeygoc
@spikeygoc 3 місяці тому
Loved this video. More please. Passion and well explained 😁
@realkorgo
@realkorgo 3 місяці тому
Nice video! The hashing idea sounds interesting! 😊
@Andron4iKTV
@Andron4iKTV 3 місяці тому
You made a mistake when show to us time complexity of binary search. You put finger emoji on O(n log n) insead of O (log n).
@fknight
@fknight 3 місяці тому
Good catch! Thanks for pointing that out.
@TT-hi7lp
@TT-hi7lp 3 місяці тому
Was just about to comment about this
@alexrubio9507
@alexrubio9507 3 місяці тому
​@@TT-hi7lphahaha same here
@OGMann
@OGMann 3 місяці тому
Oh yep. Everyone was.
@alejandrodiez5511
@alejandrodiez5511 2 місяці тому
This is really good bro, thank you
@lalodominguez7121
@lalodominguez7121 3 місяці тому
Thanksnfor sharing. This is a great help by visualizing the algorithms. Subscribed
@gypsyisking
@gypsyisking 3 місяці тому
nice video! Would love more in depth and longer videos
@ericajcruz
@ericajcruz 3 місяці тому
Great video. More "boring" algorithm videos please! Thank you for posting this.
@aimansyahmi6571
@aimansyahmi6571 3 місяці тому
Please do more of these types of video!!
@incognitiveincognito
@incognitiveincognito Місяць тому
Wish you where my data structures proffesor, then I might not of had to retake the class so many times haha. Amazing video, can't wait to see your other stuff
@BamboozledOrca
@BamboozledOrca 3 місяці тому
This was so well done!
@theodorewyatt3473
@theodorewyatt3473 3 місяці тому
I definitely like to see more algorithm videos you do them very well and explain things in similar terms. These things should help others as they go along their coding challenges when it comes to algorithms. I would says you should incorporate how code design patterns come into to play too.
@teddyfulk
@teddyfulk 3 місяці тому
Going to study up on these, thanks!
@alfonzo6320
@alfonzo6320 3 місяці тому
Man this is a pretty good video! keep up the good work.👍
@Dwafford01
@Dwafford01 3 місяці тому
I loved this video, I just want to say I finished my BSc it with programming specialisation in the end of 2020. Now for the first time I'm being treated as a developer by the company I'm working for. It's both exciting and nervous, but with videos like these I think I will be okay.
@cuerpoymentesaludables
@cuerpoymentesaludables Місяць тому
Great explanation, thank you. Subscribed
@TheDanielvenom
@TheDanielvenom 3 місяці тому
I always think that I have one kind of sort. This video literally blows my mind. Good vid.
@iceboxLP
@iceboxLP 3 місяці тому
really nice video and a very good presentation. please consider making more videos as such
@explorster
@explorster Місяць тому
Thanks Frank. Great content 👌
@oussamabenberkane9779
@oussamabenberkane9779 3 місяці тому
Great vid man! You told me to comment about this so I would like a "hashing algorithms" video please, thankyou 😌
@aaronmorgan4466
@aaronmorgan4466 3 місяці тому
Really great explanations, thank you. This highlights where I came unstuck in AoC '23 quite well :)
@dondominic6999
@dondominic6999 3 місяці тому
Really great video. It would be interesting to see a video on the Knapsack algorithm, and the boarder linear programming and optimization algorithms.
@EagleHunt
@EagleHunt 3 місяці тому
Make more videos like this. Informative content is what I’m here for
@fredrikzels2637
@fredrikzels2637 3 місяці тому
Really interesting!! More of this.
@kanemetal
@kanemetal 3 місяці тому
I don't comment often...this was awesome Forrest! Keep 'em comin'!
@ashiqurrahman1385
@ashiqurrahman1385 3 місяці тому
What a genius content! I love to subscribe to the channel ❤❤
@hu5116
@hu5116 3 місяці тому
Great video! Love that you covered the gamut, yet KISS!
@crystalg2671
@crystalg2671 3 місяці тому
Ah, this was so good! Thank you!!
@cedrickmccallon
@cedrickmccallon 2 місяці тому
Almost 20 years into the game and I wish my CS teachers would have explained these algorithms this well. Great video.
@baky5372
@baky5372 3 місяці тому
Please more algorithm videos! I liked and subscribed!!
@alceguy
@alceguy 3 місяці тому
Amazing. Keep up the good work!
@whophukenfarted
@whophukenfarted 2 місяці тому
Amazing video! I can’t wait until I can develop this type of understanding of the different algorithms! Thank you for sharing this! 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥👏👏👏👏
@amador1997
@amador1997 3 місяці тому
Love your enthusiasm
@Abc-sl1nf
@Abc-sl1nf 3 місяці тому
Great explanation!
@LukeBrady
@LukeBrady 3 місяці тому
Fantastic video. Subscribed!
@krzysztofs3t532
@krzysztofs3t532 3 місяці тому
Wow man! I'm a mathematics major, working as a React developer and this video rekindled my pursuit for pure programing, not just learning another library! Thank you very much! Immediately sub!
@felicityspyder
@felicityspyder 3 місяці тому
Great primer/intro
@preludeofme
@preludeofme 3 місяці тому
Keep these types coming (but also don't stop the long form too 😊)
@Nynxxx
@Nynxxx 3 місяці тому
I would love for you to do more videos on this stuff as I am about to finish my Comp Sci degree, and I am currently struggling with algorithms. I have not been the best with math in the past, and I just feel like there is something about algorithms I am missing. It just isn't clicking. I understand what they are and what they do, but if I get asked a simple question about solving what time complexity something is, I completely fumble, and just don't even know where to start.
@youMatterItDoesGetBetter
@youMatterItDoesGetBetter 3 місяці тому
Loveeee that you’re getting that degree. People talk down on degrees nowadays, but they really do get you in the door.
@SN-ed7wi
@SN-ed7wi 2 місяці тому
Excellent vid for all the reasons stated by others, well done. Too bad there are some who think the info is not practical today. The fundamentals you learn by coding even one of the efficient sorting algorithms will stay with you forever.
@barcactu1032
@barcactu1032 2 місяці тому
Looking forward for an algorithms series ;)
@manuelgonzales6483
@manuelgonzales6483 3 місяці тому
Hope you're doing well. Thanks for sharing your knowledge and understanding of programming 🎉❤
@shakhzodgayratov5905
@shakhzodgayratov5905 3 місяці тому
Great video! more of these pls
@skyname8870
@skyname8870 3 місяці тому
Bro, you're the best! Thank you so much for your video! No way of me missing the subscribe button!
@hapaise2924
@hapaise2924 3 місяці тому
damn reallly nice vidoe, i m graduating and going over leetcode and just algorithms and this was a really fun and informative watch!
@hemantpatel6360
@hemantpatel6360 3 місяці тому
Dude this is cool we need more!!
@enoz.j3506
@enoz.j3506 3 місяці тому
Subbed, great explanations, Thank you.
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