Asymptotic complexities

Finding a pen in a classroom of n students

O(n^2) - Asking each student and ask him about others too
O(n) - Asking each student
O(logn) - Dividing class equally and asking each half
O(1) - Damn it, I have it in my pocket 😂😂

Hope this hasn't been posted before, found it hilarious.
From /r/ProgrammerHumor

I FUCKING MADE IT GUYS! I JUST PASSED THE HARDEST COURSE AT UNIVERSITY WHICH IS ABOUT DATA STRUCTURES AND ALGORITHMS! I DRAGGED THIS WITH ME A WHOLE YEAR AND I JUST GOT THE NOTIFICATION THAT I MADE IT. I'M SO FUCKING HAPPY GUYS I CANT BELIEVE IT!!!!!!

Yes! 😎

This guy is the best coworker ever. He analyzes my algorithms, advises me when to eat or take breaks, and reminds me not to take life too seriously. He's pretty helpful with debugging too.

Embrace the notch!

How great algorithms are made!
(Unknown original source)

"Hey, can you help me with our Algorithms & Data Structures task? I tried to tranlate my problem with Google translator but I can not select the option to translate into Java."

I was speechless when a girl actually asked me that

This is brilliant 😂😂

Me: "I'm a programmer"

Others: talks about linux
Others: search algorithms!
Others: service infrastructure
Others: memory optimization
Others: encryption

Me: "I'm a front end web developer"

Others: complex services
Others: strong user form validation
Others: lazy loading
Others: SEO

Me: "fucking, I make shit look pretty alright"

A substring problem? Here, have 3 nested for loops 😏😏

Today I discovered MIT OpenCourseWare.

I hate university, and I usually doze off during lectures, but my god, I've been listening to "Introduction to Algorithms" for about 6 hours now, and I'm hanging on to every word.

Yay practical algorithms!

Biggest scaling challenge?
The imaginary scaling issues from clients.

Client : How do you cope with data that's a billion times bigger than our current data set? Can you handle that? How much longer will it take to access some data then?

I could then give a speech about optimizing internal data structures and access algorithms that work with O(log n) complexity, but that wouldn't help, non-tech people will not understand that.
And telling someone, the system will be outdated and hopefully been replaced when that amount of data is reached, would be misinterpreted as "Our system can not handle it".

So the usual answer is: "No problem, our algorithms are optimized so they can handle any amount of data"

Gets me everytime :3

True story!!

1. You will write ugly code. Code that is in dire need of refactoring almost immediately.

2. You will write brilliant code. Functions and algorithms that will impress all that use them.

3. 1 & 2 are not mutually exclusive. Good software can be written poorly, beautifully written code can be useless. At the end of the day, just get the job done.

Familiar with this Book?
My Teacher said it's the Bible of Algorithms for Beginners.

Sorting algorithms visualized

I have just landed my dream job. Coming from a background of java and python, I applied for a C++ heavy company... The interview process was centred on algorithms and I passed it. Now I get to learn the language I have always wanted to learn from pretty hardcore devs while I am getting paid. One of the best fucking days of the 21 years I have been alive for.

If you like Google algorithms better, you can always just precede your duckduckgo search with !Google
Returns an encrypted Google search

Was recently phone interviewed by a recruiter that asked "So do you know data structures and algorithms?" I replied "That's like asking someone if they know Mathematics - can you be a bit more specific?"

Protip: appending ", dammit" to your Google searches tells their NLP algorithms that you need more relevant results

when ur parents try to understand what u do.

"They used coding AND algorithms"
Wow I didn't know that you can use those together!

Source: reddit

Our Algorithms and Data Structures lecturer would have died on the spot if you showed him code like that...

My algorithms professor uses safari on Windows as his main browser

Facebook: "Our facial recognition automatically tags people in pictures."

Tesla: "Our deep learning algorithm drives cars by itself."

Andrew Ng: "I predict patients' likelihood of dying with 99% accuracy."

Google: "You know one of our algorithms is going to pass the Turing test very soon."

Wall Street: "We use satellite images to predict stock prices based how filled car parks of specific stores are."

The remaining majority of data sciencists: "We overfit linear models."

Every job description out there:
" JUNIOR XY position.
Requirements: 50 years experience of Assembly, Java and Masonry, HTML, cloud based computing and artificial intelligence. Must be able to write algorithms like Hummingbird. Fluent in English, Mandarin and Latin. Must have five doctor and two Bachelor degrees. Experience in leading a Fortune 500 company benefitial.
Renumeration: 5 rice grains"

Well...

By learning the basis of things instead of just using them.
for example I learn cryptographic algorithms behind ssl instead of just using it.

This is the right way to deal with GOOGLE and their ALGORITHMS. Confuse the fuck out of them.

(!rant)

Agree.

1. No more coding on paper! Why can some already write essays on laptops but programmers are stuck with "analog"?
2. No vendor lock-ins! Teach free, cross-platform development, not VB.NET.
3. No more professors stuck in the eighties! If all you know is 6800 assembly, GTFO. I heard NASA was hiring...
4. Enforce code style consistency, proper documentation and even VCS for larger projects
5. Algorithms -> scripting -> programming. Don't quickly explain the basics, then throw students straight into Java.

These Google/FB/etc algorithms almost know what I like. Almost. And that makes it even more infuriating...

"10 banana smoothie recipes Elon Musk would like!"
"Become a Senior Java developer in one week!"
"Read this article from a non technical journalist about the technology behind bitcoin!"
"10 tips from muscled Amazon CEO Jeff Bezos for Gym workouts!"

All of this feels like receiving a blowjob while still wearing pants.

Goodbye web development; welcome back algorithms and scripting... How I missed you so much in these agonizing days we've been apart. But fear not, I shall never return to web development...

Well, I still have important websites to finish, but I won't let web development become my niche.

I want to thank every Indian computer scientist on Youtube. Because of these guys I passed my Algorithms and Data Structures Exam.

Me: Browsing the security of a website.

Tell the website developer that they are using the SHA-1 hashing algorithm for encrypting the credentials of it's registered users.

Them: Yeah, so what?

Me: You shouldn't be using an algorithm which was exploited years ago in the age of 2016.

Them: Don't worry, nothing will happen.

Me: *facepalm*

when you screw up at a coding interview because you couldn't remember an algorithm you havent used in 7 years.

Crowdsource let's you improve Google's algorithms by manually identifying items. I helped the world today by making sure "sex" = "sex"

Wonder if I'll ever feel like a real programmer in web dev surrounded with C++ gurus that eat, sleep, and breathe memory allocation and optimization algorithms. I'm just over here like... You can go to this link and a pretty red box moves around on the screen

Come to a festival they said.. .. It'll be fun they said.. Here I'm ranting and reading machine learning algorithms under a tree, while others party. Omg.

Just read that EU may planning regulating Algorithms...

What the fuck? WHAT THE FUCK?

They want that programmers make their Algorithms public accessible for transparency and say what algorithms are allowed to do, because people are scared of them?!

MY BRAIN HURTS AFTER THAT FUCKING GENERAL DATA PROTECTION BULLSHIT THEY WANT TO REGULATE HOW OUR PROGRAMS SHOULD WORK?!

AHDHSHSJSDHJABDJS SHDNSBDBSNSN *RAGEQUIT*

Einstein :" Insanity: doing the same thing over and over
again and expecting different results.

Me: O yeah? Try nondeterministic algorithms

Why don't people get that implementation is just as important as the theory behind the algorithm.. ?

I mean I hate it when someone proves something on paper and thinks their job is done.. And most people don't appreciate the implementation details of ML algorithms..

Oh man !! Computational Geometry Algorithms Library (CGAL) !! I feel like I'm flying whenever I'm coding geometry !!

Feels so goooooood !!

That's how you simplify stuff and everyone will believe it's rocket science.

If ML algorithms mess with us, NO DEBUGGING... That's it, no MERCY AT ALL!!!

Well...

1. Decide to learn optimisation algorithms
2. Realise that you have forgotten calculus
3. Decide to learn from the beginning
4. Search for tutorials
5. Go through the introduction parts
6. You know that you can't complete
7. You watch other entertainment things on YouTube.

Stories of a lazy programmer...

I hate bullshit metrics, they are everywhere.

- 90% unlimited downloads (not unlimited then is it, dickface)
- you are 53% more likely to be noticed with a pro account (yeah, because you fucked with the algorithms)

programing for life :p

I run very fast; Almost at O(1)

There comes a time in every developer's career that the serious study and memorization of algorithms becomes beneficial to their career.

In fact, I believe this is one of the only areas where a university graduate has an advantage in programming.

At this point in my career, I can solve almost any puzzle I come across. Unfortunately, not in the most efficient or elegant manner.

I think if I had even rudimentary knowledge of how some of the more famous algorithms are built, It would give my mind the ability to expand into alternative ways of accomplishing tasks, and I could come to conclusions and ways to solve problems faster and more efficiently.

Guess it is finally time to sign up for that Princeton Algorithm Course.

Algorithms strike again :D

By the way I really much agree on both rants. People asking questions that they not even once typed into Google. Disturbing my workflow every 5 minutes...

The index to Sedgewick's Algorithms book says:

recursion, 35
see also base case,
see also recursion

Some top-notch learning algorithms you have there Google 👌

What does sorting and sex have in common? In both cases we hope for a great Big O.
I'll see myself out 😅

Tty, Catch and what about throw ?? 😄😄

This is triggering me sooo much!!!

Can anyone recommend good books for coding algorithm​s?

Any tips and tricks would also be helpful. Thanks.

'Yay!! My program runs and is giving expected output.'

** Professor gives large input file **

Segmentation fault (core dumped)

'FML'

(My story in every algorithms lab)

Today is my fourth try to pass advanced algorithms. Wish me luck.

Graduation day:

A guy presents a modified pathfinding algorithm based on a*, in Java.
Jumping to the conclusions, he says he tested the algorithm on a 128x128 graph based maze, but not larger because the program saturates his 4 GB ram pc.

One teacher (algorithms and data structures) literally jumps from the chair "you saturate 4gb of ram with a* on 128x128 graph?!"

Best graduation day ever lol

I know 2018 is upon us in the next 24-36 hours.

I wish everyone has a good year of coding with no major bugs whatsoever..

A small question for the devs.. regarding algorithms.

How do I improve my algorithms and efficiency of coding skills in the next year?

Which books other than CLRS and Cormens book?

Any other book that helped you guys?

Today during my Algorithms lab, the guy sitting to my left began digging his nose like he had buried treasure there. 🤢
Oh how I wanted to smash his face on his keyboard. 😭

Complexity of algorithms

How many of you think that we might be living in a computer simulation? 🙄😐😓

Could you imagine a guy who takes A4 paper with encrypted text using modern algorithms and decrypts it in 20 minutes which pen and his mind?

Is it just me or are sorting algorithms really, really, calming?

Hey! How do I do machine learning?

Well first you start off with a metric shit ton of data.
And then you .fit() your data
from there you can .predict() your data

Trust me, the algorithms are already there. All you need to do is get the data.

No harm in having little fun along with work..

Had to hand in as assigment for my algorithms & data structure course and really put alot of work into it, commented code, easy to understand and all.
"Why are you showing me copied code from the internet?" was the professors answer...
I did not copy any code and some algorithms often look the same...

While learning algorithms. That shit was amazing!

When you don't want to explain what you've done with application's code base so you play the "algorithm" card.

Boss: tell me about the new release.
Me: updated the search algorithms boss.
Boss: cool. Release!
Me: 😎

You spend months coding an app, you refactor and restructure multiple times, you apply all sorts of smart patterns and algorithms you learned over all those years, you go back to the books even, you spend money on a ton of assets, localization, marketing, you spend time contacting hundreds of people that could boost your app in the ocean of apps. And once your app hits the store, people complain that $0.99 is too much.

When you find out you passed the exam in which you guessed half of the answers ! 🎆🎉🎊
The algorithms of my brain seem to work well 🤣
This is now my second best module and I didn't study a lot hahaha

I got ranted,by our teacher in algorithms lab, because I was compiling the code using terminal and was not using torboC (there wasn't any IDE installed on the system) 😃

When you implement an algorithm on your first try:

Why do snails and slugs hate security algorithms?

Cause they might contain salt.

After watching Mr Robot, I installed Kali and learnt to hack WiFi passwords via brute force. Was utterly disappointed that, most crackers just use prebuilt tools instead of developing their own algorithms and programs.

This is documentation at a noob-program level. We had this one teacher, who shall remain unnamed, who used single letter variable names everywhere, who couldn't understand his own programs when they were shown to him.
PS - The picture attached is supposed to be an implementation of Kruskal's algorithm. Don't ask me what the variables mean.

Sometimes I feel MS Excel is more intelligent at predicting my next moves whenever I open a new sheet than Google's AI and ML algorithms who have been tracking me for years now.

Dad: why are you doing IT after I put you through business school

Me: because you're the one that nagged me not to do it instead CS.... So now I'm stuck in IT... Because I can't seem to understand Big O and algorithms needed to pass a technical interview...

Diving into genetic algorithms right now (its 4 am), am i just a rare specimen or is this not hard at all?

Note to myself: don't start writing algorithms at 2 am

If coding was a thing 100+ years ago, we'd have quotes by great men like "You won't have space for new ideas unless you shit out the old ones in the toilet." which would be an alternative for "the toilet is the best place to think of algorithms and fixes."

Who else is bored of developing an app and interested in a bot or self learning algorithms?

University, Italy
We have sent our code to the professor for correction.

Professor : Who wrote the code with comments in english?

Proud student : me !

Professor : you failed to write the algorithms, and also made mistakes with a lot of English words.

Everytime I am sad, I feel a bit off
>sad_frog.jpg

When you learn Quick Sort and it is hard to hold back this classic reference...

I'm making a renderer but I can't work on it right now so I'm reading about different algorithms and stuff and I'm so hyped to carry on with it tomorrow - such a fun project!

How to get investors wet:

“My latest project utilizes the microservices architecture and is a mobile first, artificially intelligent blockchain making use of quantum computing, serverless architecture and uses coding and algorithms with big data. also devOps, continuous integration, IoT, Cybersecurity and Virtual Reality”

Doesn’t even need to make sense

My favorite sorting algorithm.

microsoft-is-using-ai-to-make-windows-10-updates-smoother
They used coding and algorithms to detect when you’re working

Fuck Udemy adverty. "You should learn this online machine learning course, it's taught by an 'expert' instructor, you'll learn algorithms in pythaan and 'arr, make robust models, add value to your business." Fuck off with your buzzword mumbo jumbo and just be straight with people, don't treat them like idiots.

Data Structures and Algorithms: the single most difficult class in university.

Not only coding, but studying Computer Science has changed a lot in my life. For example, learning about CPU scheduling algorithms made me manage time for my personal tasks a lot better. Earlier I used to waste a lot of time by doing tasks in out of sync order. Also coding made me realize how dumb most people are!

Learning neural network algorithms and feeling very accomplished........

.......then checks out OpenCV and flips desk.

Why does everyone here only use Spotify? I think Google Play Music's algorithms are better

Teacher asks the class:
"How do you become a good developer?"

All the students starts talking about algorithms, problem solving or working in a team.

He nods and starts writing on the board. w w w. g o o g l e . c o m
He then leaves the classroom.

So here I am years later, a master googler and a expert stack overflower.

You have 2 years to live. You have a spouse and kid. Google offers half your salary to your spouse for 10 years and survivor’s benefits for your kid until they’re 23 (correct if I’m wrong) if you die while being employed by them.

Would you spend those 2 years practicing algorithms and your CS knowledge to get into Google? Or spend the precious little time you have left with your family?

How many of these algorithms do you know

"Let's go to buy Laptop for you. You're going to be Computer Engineer"

after 2 months
" What do you do all day spending on laptop?"
"Programing"
"Well, how's that work?"
"It follows some algorithms to get desired output"
"???, Some important files are accidentally deleted from my usb storage. Can you recover those files?"

😮😣

Then what else is lost... ?😂😂

What's the best way for someone who is terrible at maths to get better at algorithms. I'm pretty good at programming but when it comes to write an algorithm, it scares me because of my poor math.

Is there another way or do you think going back and starting maths from scratch will help?

That feeling when recursion finally "clicks", and you begin instantly identifying candidates in your code for recursive solutions.

Ok, wtf is going on brain?!

Why do I keep having dreams of code and algorithms? Let me sleep!

We use Unity in university to display the workings of algorithms.
Cus you know.. a little cross-platform 2d webgl is not enough.. we need this whole friggin engine with an IDE and its 1000 buttons and switches and need for an account and C#...

At the University, Algorithms class, exercises lesson..the assistant explaining the results of an assignment:

"Because here..if we use a classic 'if-else' loop..."

😳

When you spend hours understanding and implementing a different algorithm than the one you're currently using, only to see it do worse that the previous one -_-

I fucking hate the algorithm used in most social network (Twitter, instagram, facebook). It shouldn't be forced to use it, I just want my feed in chronological order as before (or at least having the option). I find these algorithms stupid

Is it possible to build a program that can detect if an image is a meme or not?

For starters this is my first post, found devrant the other day you're all hilarious.

I hate math, I hate proofs. I'm in a class "Analysis of Algorithms" and I have understood and do understand the importance of optimizing algorithms and data structures and I understand the algorithms and data structures themselves. That being said, I'm fucking sick of math and proofs and all this bullshit that is probably pretty important but ugggghh, I guess I just have to push through, but writing this out helped.

I just wrote unit tests for like the first time in my life (didn't find it useful in university, someone else handing in the project always did that). It cut my coding time by a factor of 3! You should try this one if haven't already, it really saved me a lot of headache right now.

Usual liars.
People who can look into your eyes and lie.
Heuristic algorithms.

Externally Playing Fifa,but actually thinking about the algorithms and the code...

Me trying to impress my girlfriend with the light painting.

Motivated me to develop my own algorithm for the effect.

Atleast make it random but cycling through ? Really ?? In it's presentation google assistant was presented as this amazing new Ai that used the latest and best machine learning algorithms and methods on the market. Don't get me wrong it's awesome it can predict patterns in my daily life and interactions but thats what machine learning does, we still didn't come very far with human-software interaction technologies have we ?

So technical interview today but woke up (6am) and started thinking about it and it led to this rant about algorithms. This is probably going into a Medium post if I ever get around to finishing it but sort of just wanted to share the rant that literally just went off in my mind.

*The problem with Algorithms Technical Interviews Is They don't test Real skills*

Real world problems are complex and often cross domain combining experience in multiple areas. Often the best way is not obvious unless you're a polymath and familiar with different areas, paradigms, designs. And intuitively can understand, reason, and combine them.

I don't think this is something a specific algorithm problem is designed to show. And the problem is the optimal solution to some of these and to algorithm design itself is that unless you train for it or are an algorithm designer (practice and experience), you can only brute force it in the amount of time given.

And quite frankly the algorithms I think we rely on daily weren't thought of in 30 minutes. The designers did this stuff for a living, thought about these problems for days and several iterations… at least. A lot were mathematicians. The matrix algorithm that had a Big O of 7N required a flash of insight that only someone constantly looking and thinking about the equations could see.

TBA
-system design
-clean readable coding practices
...

TLDR: I could probably go on and on about this stuff for hours jumping from item/example/area to the next and back again... But I don't think you can test these (~20) years of experience in a 1 hr technical interview focused on algorithms...

So just finished my last algorithms and data structures class frequency, feeling pretty confident about the grade, today it'll be all weed, pizza and sex. Life is good :')

Writing "Algorithms and Data-structures" exam in an hour.. Only coding C++ on paper .__.

my vision about life changed as I started learning about algorithms and programming, which I consider as an advantage, tho I can't help but wonder if people in different fields feel the same.
it also feels like I over-think since then, a constant need to analyze things which is overwhelming sometimes.

Due to the constant change in accuracy of my keyboards' predictive algorithms, I now find myself switching between SwiftKey and GBoard... 😢😔

Anyone else feel the same?

Don't get the logic where good understanding of algorithms is only needed for backend developers.

Holy shit man...

I know its supposed to be hard but I cant ignore how much I want to give up right now.

I've been learning JS for months now, doing daily algorithm challenges, going strong on my freecodecamp dev map and still, I feel like I might no be cut out for this.

It's been more than a week now trying to implement a minimax algorithm into my tic tac toe game. I can't, for the life of me its just getting more frustrating by the day and its driving me crazy! How the fuck am I supposed to ever get a junior webdev job if I can't do something as simple as this!, And I keep reading and reading the theory but I cant implement it into my code! It just makes me want to quit (again)!

I really need to work on my attitude...

Fellow Deviants, I need your help in understanding the importance of C++

Okay, I need to clarify a few things:

I am not a beginner or a newbie who has just entered this community...

I have been using C++ for some time and in fact, it was the language which introduced me to the world of programming... Before, I switched to Java, since I found it much better for application development...

I already know about the obvious arguments given in favour of C/C++ like how it is a much more faster and memory efficient than other languages...

But, at the same time, C/C++ exposes us and doesn't protect us from ourselves.. I hope that you understand what I mean to say..

And, I guess that it is a fair tradeoff for the kind of power and control that these languages (C/C++) provide us..

And, I also agree with the fact that it is an language that ideally suits our need, if we wish to deal with compilers, graphics, OS, etc, in the future...

But, what I really want to ask here is:

In this age and times, when hardware has advanced so much, where technically, memory efficiency or execution speeds no longer is the topmost priority... These were the reasons for which C/C++ was initially created...

In today's time, human concept of time matters more and hence, syntactical less complicated languages like Java or Python are much more preferred, especially for domains like application development or data sciences...

So, is continuing with C++, an endeavour worth sticking with in the future or is it not required...

I am talking about this issue since I am in a dilemma about the use of C++ in the future...

I would be grateful if we could talk about keeping AI, Machine Learning or Algorithms Optimisation in mind... Since, these are the fields in which I am interested in...

I know that my question could have been posted in a better way.. But, considering the chaos that is present in my mind, regarding this question doesn't allow me to do so...

Any kind of suggestion or thoughts would be welcome and much appreciated...

P.S: I currently use C++ only for competitive programming or challenges...

My 2018 goals:
1. Graduate from the Deep Learning Nanodegree.
2. Get better at Python.
3. Learn C++.
4. Learn more about Machine Learning and AI.

I don't know why they made so many algorithms, data structures and big O questions during interview, when all they wanted me to do was to maintain some legacy, tight coupled, spaghetti code with no architecture, documentation, tests nor any kind of engineering behind :/

Things that make me mad in school: when "ap computer science" is a class that literally just teaches you Java syntax and nothing about any theory and algorithms. Like c'mon

Been watching some videos on Algorithms and my mind bleeds. Do people who know this stuff really calculate complexities for each method they write?

To the one who did a degree:
How mush do you use the algorithms you've learnt in the college/University?

Does anyone here know a good book about algorithms? I'm looking something a bit more advanced

I am beyond pissed at my Machine Learning class in college. you would think an advanced topic in Computer Science would require some prior knowledge of the field, but apparently not. A quarter of the class has ZERO programming knowledge, and the professor is basing the class around that. I took this course to learn how to CODE Machine Learning algorithms, not spend weeks upon weeks on learning how to calculate probabilities...

!rant

Does anyone know what the **day-to-day** differences are between working in IT (banks, hedge funds) vs tech (Google, Facebook, Netflix).

In my mind, I see Hell and Heaven. And there's a giant wall in between called "technical interviews + algorithms and data structures".

I'm on the Hell side... And not sure if I should climb the wall 😔

Is the wall even that big?

I wanna work for a company that develops cool algorithms and implements them. Where the devs analyze complex issues and have to do complex problem solving. Where everyday is a challenge. Not a place where simple repetitive UI bugs are the issue at hand. Not a place where the only tasks and todos are trivial and uninteresting. Not a place where most of my coworkers are idiots.

I just officially graduated from a web dev program and it feels...

Very underwhelming.

Learned ES6, React, Webpack, service workers, offline databases, accessibility, (...bla bla bla)

And my knowledge with data structures and algorithms isn't even that great yet.

I look at the stuff I still don't know and wonder if I'll ever be comfortable with my level of expertise.

What do you think about this level Inheritance 😃

studyng algorithms and data structures :(

Maybe it is just I don't know Javascript as well as some other languages, but I am always struggling with manipulating arrays and objects and creating successful algorithms that pull the data I need from either.....Seems other languages I have many more methods that handle arrays and objects in ways that make it easier to filter, sort, and compare the data that I need, when I am talking about other languages, I mean mostly PHP....

People may talk badly about PHP but I can create better algorithms with it than I can with Javascript to manipulate the data and do the things I need, Javascript takes three times as long to figure out ways to do something I need to do compared to PHP, to me it is a very limiting language. Just an opinion.

I feel i am the only one in my class at uni who actually likes algorithms :D

Algorithms teacher: I don't know how to work this thing. (computer) ... Students constantly have to go up front and help him do basic computer stuff. Even worse, he types with two fingers! Why education system must you suck so bad???

When I got rejected after a job interview. I seriously need to revise data structures and algorithms !

Worst sorting algorithm in your opinion?

When you show the client the comprehensive administration system they ordered but their young female HR leader is "more into pictures than tables".

I always feel inspired by programming when I create some algorithms or programs which I can use when I need to.

Small utilities and command line programs r what I make at times... and I also enjoy trying to implement them awesome algorithms 😍

However, most inspiration I get is from looking at C code though ( especially the Linux kernel... that code is SO clean 😍😍 )

Why the FUCK are my project ideas so easy to implement. I wanted to make a static site sharing webpage (imagine github pages), and i fucking made it in 2 hours?????? Fuck me, does anyone know something like codewars or something but with project ideas instead of algorithms?

Fucking recursive algorithms. Does anyone actually use them when programming in real life?

Do you think one may become a good programmer or coder without excellent knowledge of mathematics or algorithms?

Anyone wana recommend me books for algorithms and data structures?

I have a problem to solve but I just can't come up with any working algorithm or idea to solve it. I feel really fucking stupid right now

What do you guys think about people who call themselves programmers after learning few technologies from Onlinecourse’s . I don’t want to call someone programmer who doesn’t know very important and useful concepts called data structures and algorithms.

I haven't touched algorithms for many months but needed to create a matching algorithm today.

It has to match using variations of the original key and output the keys that can't be matched.

The feeling in my head felt like I was turning rusty gears n sort of just stumbling through...

I used an N^2 approach but afterwards it just felt wrong... And it took me like an hour of hacking to do it....

Actually I just realized it's an N approach! because all possible matches would be hit by iterating from one of the lists of possible names!

I suddenly feel so proud of my subsconcious...

But still something doesn't feel right...

I know this sounds odd, but I really find algorithms things of delightful beauty.

A creative solution to some very deceptively complex problems.

Sure, some implementations aren't the best, but seeing them after just makes me appreciate the time and effort that must have gone into designing things like Merge Sort, Binary Search, Greedy Algorithms, BST, and Dijkstra's Algorithm.

So! If your code is unoptimal, looks terrible, or is a sheer abomination, take a moment to appreciate the little piece of art you've made before you go and make it better.

I just had a thought while thinking about Algorithms and data structures. Honestly other than for technical interviews I have never really had to use specific implementations.

Then I suddenly had a thought... What if I wanted to build my own operating system... I would also learn c++ as well....

I can't think of a reason to build my own OS though... Hm.. What about a programming language? Would that be like a mini-OS, and also need all this stuff?

(IMHO) The current system fails to identify that there are at least 2 main paths one can take in our field. Software engineering and computer science.
Software engineering should not be just a course. It should be a craft, a degree. Where one can learn practical things not just algorithms that are used in niche cases.
Computer science branch won't be that different from what we've got now. It can be even more focused on theory.

CS majors be like:

"She got a big theta, so I call her big Oh."

Reading CLRS ~> Spend half hour reading how to cut rods to profit the most... I love Algorithms 😍😍😍😍

Generator functions should be treated like sorting algorithms: Not worth your time if all you have is 4 or less async instructions.
Callback hell is actually kind of nice and warm when you're a just a few levels down. If you're really confused by your obfuscated code, you suck at node.

when you forget simple algorithms while coding :(

1. Study C and Python
2. Learn NLP and ML
3. Participate again in one hackathon and kick their ass after winning it
4. Get one awesome internship
5. Master algorithms and DS

For now on I am just going to say I am a Psychologist... for computers. And my algorithms are what shape the behavior (:

I will have to present some algorithms at our school festival next week.
Any idea for a good real world example to demonstrate how breadth first search works?

Big O definition on Google .. !! 😂😂

PS : Found on reddit.

I already forgot what are the different sorting algorithms I learned last week. I already forgot sin, cos, tan, log, and some Math concepts in school. How not to forget these things easily? I could recall them once I see a sample and a brief explanation.

I think ATM machies works on the most shittiest algorithms ever. One day me and my friend went to an ATM to withdraw ₹500 for me and ₹300 for him.
I entered 500 and got five ₹100 notes. But my friend, he had to withdraw ₹500 because, guess what, the ATM didn't have any ₹100 remaining.
the message "Available denominations are: 500 and 2000" was shown.
If only it had given me a ₹500 note, then he could get his ₹300 too.

A music server where people can login and add their own music to channels, with request lists and priority lists algorithms. Welp atleast the streaming part is done

Got rejected in an interview today, because I lack knowledge in Data Structures and Algorithms. 😔😞

I guess I'll have to bursh up my Algo skills again.

Definition of Algorithms...........

!important in CSS and not commenting complex algorithms in c#

In an algorithm class, professor introduced us to some simple search algorithms (bubble sort, selection sort, insertion sort, shell sort). He did a quite decent job and most of the students were able to grasp the code and understand the differences in those algorithms. But then he spoiled his whole lecture with one additional slide. There he proposed an optimization: Instead of using a temporary swap variable, we just could use the first array element (or the zeroth element, respectively: the one ad index 0) for doing all the swapping. We just had to document that, so that the caller would "leave the first position of the array empty", resulting in "cleaner code". And he did that in the same class where he used Big-O notation to argue about runtime complexity. But having the caller to resize the array and to shift all the elements by one position did not matter to him at all, because it was "not part of the actual algorithm".

What are some of the most interesting algorithmic problems you have faced?

Me(the first day fo spring semester): Data Structures and Algorithms shouldn't be too hard of a class! This will be interesting!

Me(a couple days into class): I don't understand anything she's saying and the programming problems are in some pretty rough English...why me?!?

Anyone else like... REALLY bad at algorithms and logic stuff?

I just hate them so much.

Tell me to build something and gg done. But all these tests for jobs freak me out.

Like. It probably ends up being something simple and when it's explained I know what to do but at first I just instantly shut down and can't think.

What do you guys think about competitive programming, how does it impacts your programming in the long run?
I feel depressed when I take more than enough time to complete a competitive programming challenge marked as "Easy". 😥

Not so much a problem with the way CS is taught, but I think it's a problem that a lot of people put emphasis ONLY on programming (and maybe data structures and algorithms) and ignore things like Computer Architecture or Theory of Computation.

Most of the CS syllabi I've seen are built very well, but many students (and some teachers) seem to ignore a bunch of subjects because they don't contribute to making them "hireable".

I know how to code. I am good at coding, algorithms, datastructures. I have also been using linux since 4 years.

But still I am not a programmer. I work on excel in office.

How do you think recursively? Any tips?

Giving a tensorflow workshop and the thing people struggle the most is the Linear Algebra behind it... it is only gradients in tensor and some matrix multiplication.

My recommendation is: do you want to work with Deep Learning algorithms? Y'all need Linear Algebra, not PhD, just a bit!

I am afraid of programming

i wish i had no university classes (or at least, only programming classes) so that i could learn more about different technologies and had more time to code :(

One of the best algorithms I have designed ever

I want to adopt this habit of coding one fundamental concept/tool/.. every day before/after work. I already started doing it and I've been coding sort algorithms. every morning since last week, in Java.
What do you guys think should go on the list of things to practice regularly ?

A newbie trying to understand Algorithms....suicide. No jokes here.

I just realized my male brain is horrible at multithreading. ++ to all womens and their amazing algorithms and capabilities 😘

Anyone else think the class algorithms in college was difficult?