FizzBuzz: One Simple Interview Question

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Tom Scott

Tom Scott

6 жыл бұрын

There are a lot of opinions on how to hire coders, and most of them are terrible. The opinions, that is, not the coders. But a basic filter test to make sure someone can do what they say they can: that seems reasonable, and FizzBuzz is one of the more common tests. Even now, interviewers use it. Let's talk about why it's tricky, and how to solve it.
Imran's blog post: imranontech.com/2007/01/24/us...
Other approaches for pretty much every language: rosettacode.org/wiki/FizzBuzz
Thanks to the Cambridge Centre for Computing History: www.computinghistory.org.uk/
The thing behind me is their Megaprocessor: • The MegaProcessor
And thanks to my proofreading team!
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Пікірлер: 7 200
@michaelgray9112
@michaelgray9112 6 жыл бұрын
I'm a bit late but I'll post my Python solution: import fizzbuzz
@Trekeyus
@Trekeyus 4 жыл бұрын
I like the way you think
@waynezor
@waynezor 4 жыл бұрын
import fizzbuzz fizzy = fizzbuzz.Fizzbuzz() fizz = fizzy. fizzbuzz(start=1, stop=11) print(fizz) 1, 2, fizz, 4, buzz, fizz, 7, 8, fizz, buzz, 11 easy :-)
@Kamel419
@Kamel419 4 жыл бұрын
lmao painfully accurate
@videopsybeam7220
@videopsybeam7220 4 жыл бұрын
I kept looking for that "Read More" button and never found it.
@razordu30
@razordu30 4 жыл бұрын
FYI - I've chuckled at this joke every so often for at least a year.
@Jams848484
@Jams848484 2 жыл бұрын
"I'll leave fixing that as a problem for someone else" Yep Tom is definitely a programmer.
@aurelia8028
@aurelia8028 2 жыл бұрын
Or a proffessor at a university...: "The verification of this proof is left up to the reader"
@KF-zb6gi
@KF-zb6gi 2 жыл бұрын
@@aurelia8028 🤣🤣🤣👍🏻
@Hdbdbdby
@Hdbdbdby 2 жыл бұрын
@@aurelia8028 trivial
@deathZor42
@deathZor42 Жыл бұрын
Not really a JavaScript programmer at all but to save on if statements: for (var i = 1; i < 100;i++) { var output = ""; var division_test = {3: "Fizz", 5: "Buzz"}; for(var key in division_test){ if (i % key == 0) output += division_test[key]; } if (output == ""){ output = i; } console.log(output); } it's relatively trivial to fix, there is likely a more elegant solution for the whole problem, but meh it works and solves the repeating code problem.
@lucusekali5767
@lucusekali5767 Жыл бұрын
@@deathZor42 nice
@78-h
@78-h 2 жыл бұрын
"whoever comes along to maintain your code once you're done with it" AKA: future you in 6 months
@zainmushtaq4347
@zainmushtaq4347 2 жыл бұрын
"When I wrote this code, only God and I understood what it did." "Now... only God knows."
@Chicken.
@Chicken. 2 жыл бұрын
@@zainmushtaq4347 That's me after I come back to an old project.
@drsch
@drsch 2 жыл бұрын
That scene from LOTR comes to mind in Moria, "I have no memory of this place...."
@vitus4514
@vitus4514 2 жыл бұрын
"What moron wrote this??" -> sees it's you on git blame -> "Oh.."
@zenpharaohs
@zenpharaohs 2 жыл бұрын
It sound extravagant to write code that defends against a determined opponent who knows everything about your code and how best to conceal errors from you; until you realize that opponent is you six months ago....
@dotanoob466
@dotanoob466 3 жыл бұрын
Code is read way more often than it’s written. And it’s often read by people other than the original writer of said code. Which is one reason why writing clean code is so important.
@NmaeUnavailablesigh
@NmaeUnavailablesigh Жыл бұрын
And it's often read by the original writer long after they've forgotten about how they wrote it
@azuralmusic
@azuralmusic Жыл бұрын
Yep, I think the person who wrote the code reads it more times than anyone else, at least in my industry.
@kacpero02
@kacpero02 Жыл бұрын
If your code doesn't look like deranged notes of a schizophrenic cultist can you even call yourself a programmer
@eTiMaGo
@eTiMaGo Жыл бұрын
Yep, I'd rather write code spread over a few lines, with each one doing a clear function, than doing some fancy operation all in one line then trying to figure it out 3 months later :D
@tomsterbg8130
@tomsterbg8130 Жыл бұрын
@@azuralmusic Messy code takes your mind away in the matter of hours. You write something, you write something else, come back, AAAAH WHAT IN THE WORLD WHO WROTE THAT (me)
@Enke796
@Enke796 6 жыл бұрын
6:32 "But I'll leave fixing that is a problem for someone else." This guy codes.
@DanCojocaru2000
@DanCojocaru2000 6 жыл бұрын
This guy does too many things. :3
@Markyroson
@Markyroson 6 жыл бұрын
Enke796 😂
@jamess1787
@jamess1787 6 жыл бұрын
Dan Cojocaru you should see what he can do with Matt.
@minecraftminertime
@minecraftminertime 5 жыл бұрын
as*
@VirtuelleWeltenMitKhan
@VirtuelleWeltenMitKhan 5 жыл бұрын
Yeah. Someone else is future him in most of the cases. Greetings
@jamesthompson2065
@jamesthompson2065 3 жыл бұрын
"Repeating yourself like this is a sign of dodgy code." This is a personal and unwarranted attack on my way of life sir.
@jamesfoo8999
@jamesfoo8999 3 жыл бұрын
"Repeating yourself like this is a sign of dodgy code." This is a personal and unwarranted attack on my way of life sir.
@ejgoldlust
@ejgoldlust 3 жыл бұрын
@@jamesfoo8999 "Repeating yourself is a si
@nbee4981
@nbee4981 3 жыл бұрын
@@ejgoldlust @UC1OdUjZdTpo85Umes5LMVkg^^^^^^^ What they said. Hey, repeating what someone else did is just efficient.
@yeshesdevi
@yeshesdevi 3 жыл бұрын
A little DRY humor? (OK, I'll be quiet now.)
@MoMoneyMoritz
@MoMoneyMoritz 3 жыл бұрын
never before have i so been so deeply offended by something is entirely agree with XD
@markreynolds5384
@markreynolds5384 Жыл бұрын
The use of “i” as the index for loops is historical. In the 1960s and 1970s Fortran was the dominate programming language. It is the precursor of most languages today. Fortran used variables that started with i,j,k,l,m and n as default integer variables. Programmers got into the habit of using these single letter variables as simple integer variables in loops so they did not have to go back and add them to their integer declarations. Over time this became so widely used that everyone started assuming that if they saw these single character variables then they were index variables in loops. That coding habit moved with the programmer as they moved to new languages.
@jackismname
@jackismname Жыл бұрын
This itself comes from mathematics, where sums over numbers is done with regards to the INDEX number, hence i.
@eTiMaGo
@eTiMaGo Жыл бұрын
@@jackismname That's how I learned it as well, and x,y,z are just brought over from mathematics. "foo" and "bar" are fascinating, though :D
@julianbrown1331
@julianbrown1331 Жыл бұрын
@@jackismname The origins go back to Arabic algebra (as opposed to Greek), i has nothing to do with index, at least not in the way you're thinking
@jackismname
@jackismname Жыл бұрын
@@julianbrown1331 Got it, I realize I made a big/ erroneous assumption here!
@saccerzd
@saccerzd 8 ай бұрын
I always assumed - probably incorrectly - that i meant integer.
@ciknay547
@ciknay547 2 жыл бұрын
It's funny how programmers have different priorities in terms of what they see is important. You saw it more important to avoid repeating the magic number 5, however my immediate thought was to avoid adding string concatenation, as in most languages you've increased your memory overhead.
@Ben--Nay
@Ben--Nay 2 жыл бұрын
especially considering that you can use a logger that just wont go to the line except if told to.
@sploofmcsterra4786
@sploofmcsterra4786 2 жыл бұрын
Also what if the interviewer asked them to change it so it said "Pop" on multiples of both? Then you're back to that repeat.
@Miscio94
@Miscio94 2 жыл бұрын
@@sploofmcsterra4786 Can't you add an exception that if the print is "FizzBuzz" change it to whatever or something?
@milkflys
@milkflys 2 жыл бұрын
@@Miscio94 sure, but then you're running the same tests again on the output, which was the original problem with the if else statements
@doomse150
@doomse150 2 жыл бұрын
@@sploofmcsterra4786 I'd say that diverges far enough from the initial assigment that it can require redoing the code. Since combining words on multiples of more than one "key number" is an integral part of the game
@Conycon
@Conycon 4 жыл бұрын
I made this in the only language I know, Scratch.
@CookieTheSmolFox
@CookieTheSmolFox 3 жыл бұрын
True legends code only in scratch ✌️
@indigoziona
@indigoziona 3 жыл бұрын
I was wondering if there's a good way to do it on the Micro:bit :)
@KingKamal47
@KingKamal47 3 жыл бұрын
Tynker all the way
@Pyranders
@Pyranders 3 жыл бұрын
I learned python so that I could code my own macros.
@bragapedro
@bragapedro 3 жыл бұрын
Y'all using scratch? Noobs. Real legends know that logic gates are the master coding system
@Am-Not-Jarvis
@Am-Not-Jarvis 4 жыл бұрын
"I'll leave fixing that as a problem for someone else" This proof is left as an exercise for the reader
@0colorad0
@0colorad0 4 жыл бұрын
Using a hash/dictionary/js object/map/whatever it might be called ``` (1..100).each do |number| options = { 3 => "Fizz", 5 => "Buzz", 7 => "Whatever" } output = " " options.each do |factor, word| output += word if number % factor == 0 end output = number if output == " " puts output end ```
@victoriencornet5714
@victoriencornet5714 3 жыл бұрын
​@@0colorad0 Here, I guess the answer to "I'll leave fixing that problem to someone else" is: function replace(double number, double divisor, String replacer){ if (number%divisor=0) return replacer; return ""; } function fizzbuzz(int end){ for (i in 1 to end){ String output=replace(i,3,"Fizz"); output+=replace(i,5,"Buzz); if (output=="") output=i; print(output) } }
@ananttiwari1337
@ananttiwari1337 3 жыл бұрын
@@0colorad0 what is that programming language? Ada? C?
@deleteduser84
@deleteduser84 3 жыл бұрын
@@ananttiwari1337 looks like ruby
@integralboi2900
@integralboi2900 3 жыл бұрын
Math textbooks in a nutshell.
@danielsummers1973
@danielsummers1973 3 жыл бұрын
From what I've heard anecdotally, the "otherwise, print the number" is the part that new programmers often leave out. The problem isn't presented in as nearly much detail as it is in the video, and the developers get so caught up in the Fizz/Buzz/FizzBuzz thing that they forget the last part. It's not only a programming question, it's an "attention to detail" question.
@thepalelady
@thepalelady 2 жыл бұрын
That's scarily accurate considering I did the entire problem and forgot about printing the leftover numbers
@xyyx1001
@xyyx1001 2 жыл бұрын
I'd blame the interviewer for not giving me clear requirements and ask if they are in charge of hiring BAs?
@michaelforis2713
@michaelforis2713 2 жыл бұрын
That's a very interesting anecdote. I'm the kind of person that enjoys interviewing for a job and I'm always a tiny bit excited when I come across challenges like that Thanks for the insight!
@michaeltan7625
@michaeltan7625 2 жыл бұрын
I don’t get it. It’d be obvious you did things wrong when you just see fizz and buzz on screen. The interviewer would be a real jerk if they don’t let me compile and debug (which is a huge part of programming), and then blame me for making that type of mistake
@michaelforis2713
@michaelforis2713 2 жыл бұрын
@@michaeltan7625 Are interviewers meant to accommodate? No.
@spitalhelles3380
@spitalhelles3380 3 жыл бұрын
dodgelord me: "put all numbers in a list, then change every third entry to Fizz, every fifth entry to Buzz, every fiteenth entry to Fizzbuzz, output the list"
@Nagol93
@Nagol93 2 жыл бұрын
Id just generate a list from 1 to 100 and replace random numbers with "Fizz", "Buzz", or "Fizzbuzz" and tell them to run it until its correct :D
@spitalhelles3380
@spitalhelles3380 2 жыл бұрын
@@Nagol93 how does your program know when that is?
@Nagol93
@Nagol93 2 жыл бұрын
@@spitalhelles3380 Thats the user's job
@sebgamingkid
@sebgamingkid 2 жыл бұрын
that actually isn't _too_ bad of a solution
@eamonearl6935
@eamonearl6935 2 жыл бұрын
@@sebgamingkid i guess it’s kind of dependent on what the OS is optimized for but i feel like usually writing to arrays is a significant bit slower than integer division
@ashleygchannel
@ashleygchannel 4 жыл бұрын
I watched this video a day before my interview... This question came up... I got the job. Felt like I cheated 😂
@anneaunyme
@anneaunyme 4 жыл бұрын
The quickest way to code something is often to look up on the Internet if someone already did it. You managed to have already done that before you were asked the problem, so really you are more than qualified for the job.
@VolkanKorki
@VolkanKorki 4 жыл бұрын
Anne Aunyme Papa Bless KZfaq recommendations... (for today)
@JonasHamill
@JonasHamill 4 жыл бұрын
I saw this video a couple weeks after my interview, this questions came up.. I didn't get the job. Wish I'd cheated
@timchanux
@timchanux 4 жыл бұрын
In real life everybody looks up stack-overflow anyways
@roguishpaladin
@roguishpaladin 4 жыл бұрын
So, has your ability for code prognostication extended into the tasks you've been asked to do? There's a huge market for people who know what to look up on Stack Overflow before they're even given a task.
@dragmire3D
@dragmire3D 4 жыл бұрын
I remember trying to make a tic-tac-toe game in the 'Introduction to Programming' class in high school. It ended up as something like 88 pages of if/else statements. I was just happy it worked...
@FinnishArmy
@FinnishArmy 4 жыл бұрын
dragmire3D I had to code a shift-tac-toe instead of tic-tac-toe. Try doing that with if/else statements...
@masoodjalal1152
@masoodjalal1152 4 жыл бұрын
We got a project to make a simple atm machine as a freshman and I made it in around 600 lines of code. It did work then, but now I don't even understand what the hell I did and how tf it worked. Later when I got some good understanding of the language(C++), I decided to do it again and this time it took about 200lines of code to do it. and most of the lines were just empty lines with braces to keep a clean readable code.
@ignaciosavi7739
@ignaciosavi7739 4 жыл бұрын
I wanna see that code
@anushakabber2709
@anushakabber2709 4 жыл бұрын
I am a freshman and I'm basically at the stage you guys are describing. I bodged my way through converting simple C code to python in around 700 lines of code and it hardly works 😓 we were asked to write it in C.
@nerze3157
@nerze3157 4 жыл бұрын
@@anushakabber2709 C as a freshman ? Your teacher is a sadist, or do you mean C++ ?
@moonlifeSW
@moonlifeSW Жыл бұрын
I used fizz buzz to hire my test engineers. One time I interviewed a dozen engineers only 2 passed. Some that failed had degrees from Stanford, Yale etc.
@MrJuzzi3
@MrJuzzi3 6 ай бұрын
Do you mean failed as programmed it the not optimal way or did not manage to even give a working solution?
@moonlifeSW
@moonlifeSW 6 ай бұрын
@@MrJuzzi3 I mean failed to give a working solution at all. Interestingly one candidate from UCSD solved it in like one minute. It just demonstrates to me that programming is about problem solving and having only knowledge won't get you very far.
@MrJuzzi3
@MrJuzzi3 6 ай бұрын
@@moonlifeSW Wow, that is surprising, well this does give me some confidence in my own skillset!
@Minimax04
@Minimax04 2 жыл бұрын
Tom: ‘Don’t leave things in such a mess for someone else.’ Also Tom: I’ll leave that for someone else to fix’ Tom absolutely nailing your everyday dev, there.
@MrTrees
@MrTrees 4 жыл бұрын
Interviewer: “write this code for us” Me, a professional software developer: *googles the code because someone out there has already done it in a better way than you ever will*
@fieldmarshal7298
@fieldmarshal7298 4 жыл бұрын
Work smart; not hard.
@yugimumoto1
@yugimumoto1 4 жыл бұрын
@@WinterSnowism very true. Don't copy paste deep learning AI code and then expect people to just not talk to you about it.
@jamesmurphy7193
@jamesmurphy7193 4 жыл бұрын
I recommend you avoid the field of quantum computing then
@Puerco-Potter
@Puerco-Potter 4 жыл бұрын
Most of the time I can write a solution as good as that, but would take me hours of fine tuning. Or I can read one solution online, say "that makes sense to me" and go on with my life. I copy the solution, not the code itself, even if I copy the code.
@teemuleppa3347
@teemuleppa3347 4 жыл бұрын
@@fieldmarshal7298 i dont think you understand the word "smart"...
@willjones8849
@willjones8849 6 жыл бұрын
I do Print: (“1,2,fizz,4,buzz,fizz,7,8,fizz...buzz)
@HandledToaster2
@HandledToaster2 5 жыл бұрын
But what if you want 1000?
@saldor0108
@saldor0108 5 жыл бұрын
@@HandledToaster2 must.. copy.. and paste.. HARDER!
@GameCyborgCh
@GameCyborgCh 4 жыл бұрын
Interviewer: "no do it for 1 to 10 million
@commenturthegreat2915
@commenturthegreat2915 4 жыл бұрын
@@GameCyborgCh THIS IS GOING TO TAKE SOME MORE COFFEEEEEE
@gameriffy2458
@gameriffy2458 4 жыл бұрын
now instead of 5 and 3... make it 12 and 10 :) i think coffee wont be enough anymore
@ianrasmussen5380
@ianrasmussen5380 2 жыл бұрын
"If you want, pause the video now and have a go at it" Me: "Good idea, let's write it in C, it's been a while." Me 5 hours later: "Alright I finally got a C compiler installed on Windows. What was I doing again?"
@ianrasmussen5380
@ianrasmussen5380 2 жыл бұрын
@@inigo8740 I cannot consider an OS with a kernel created by the person who thought git had a sensible user interface. And really the issue was trying to get clang to work. Basic GCC I got to install with mingw super easy. Windows feels very much not a priority for the clang project
@JonatasAdoM
@JonatasAdoM 2 жыл бұрын
@@inigo8740 From my point of view Windows is the dark side!
@kg4wwn
@kg4wwn 2 жыл бұрын
@@inigo8740 I'm running Gentoo, so it was kinda important for the compiler to already be installed.
@geezgus
@geezgus 2 жыл бұрын
sudo apt install build-essentials :)
@the.parks.of.no.return
@the.parks.of.no.return 2 жыл бұрын
You could probably just use arduino C
@jordnisse
@jordnisse 3 жыл бұрын
Programmers use "i" instead of other letters simply for the fact that "i" corresponds to ASCII Hex 69, nice
@Palewhitegamer
@Palewhitegamer 3 жыл бұрын
Not... Integer?
@TrenteR_TR
@TrenteR_TR 3 жыл бұрын
@@Palewhitegamer Actually because in the earliest programming languages it was called an iterator. Short i
@Palewhitegamer
@Palewhitegamer 3 жыл бұрын
@@TrenteR_TR this makes _way_ more sense than 'hex 69'... Thank you!
@JuampyRabino
@JuampyRabino 3 жыл бұрын
Usually in mathematics you use i as the index in an addition
@thesapphiredragon8568
@thesapphiredragon8568 3 жыл бұрын
I've always thought it was short for "index"
@5Zacc
@5Zacc 4 жыл бұрын
“Have a go at making fizzbuzz yourself” Me
@1414fritz
@1414fritz 4 жыл бұрын
const numbersToReplace = [ [3,'Fizz'], [5,'Buzz'] ] for(i=1;i !(i % replacement[0])) console.log( r.length ? r.map(result => result[1]).join('') : i ) }
@MrOod67
@MrOod67 4 жыл бұрын
@@1414fritz you have misunderstood the problem. It's multiples of 3&5 (so 6,9 etc) not simply replacing 3 or 5
@existence.5806
@existence.5806 4 жыл бұрын
@@1414fritz tf is this 😵
@ivanomatrisciano3828
@ivanomatrisciano3828 4 жыл бұрын
@@1414fritz you need an exorcism
@-.---.-.-.-
@-.---.-.-.- 4 жыл бұрын
@@MrOod67 you have misunderstood his code, that is what it does, just not in a very clean way.
@Dumdumshum
@Dumdumshum 4 жыл бұрын
Bodging like that in techie environs is called spaghetti code. It can sometimes be useful to prevent your company deciding you're redundant if you're the only one who can easily figure out what you've done.
@DrPumpkinz
@DrPumpkinz 4 жыл бұрын
​@Shreyash Adappanavar If you're the only person who knows what your code says, if your company wants to fire you, whoever they get to replace you will have to figure out your garbled mess.
@nagitokomaeda3237
@nagitokomaeda3237 4 жыл бұрын
Spaghetti code can easily be avoided by rewriting it and using comments.
@DrinkCoffeeRun
@DrinkCoffeeRun 4 жыл бұрын
I swear the whole "I'm the only one who can read this" doesn't ever work out. Most companies will just hire a contractor to rewrite your code, but with comments. Companies don't care about you or your code, they just want the end product to work.
@stevenhart6788
@stevenhart6788 4 жыл бұрын
I was working in a relatively new position at a company and their database was total crap so I built them a new on and transferred all the data over. I'm kind of worried about what it looks like now since it's been 3 years since I left and I think I was the only one in my office who knew how to design a database in Access.
@RWBHere
@RWBHere 4 жыл бұрын
@@stevenhart6788 I did something similar with a recurring seasonal job. Their detailed data on over 12,000 people was in one humongous, messy spreadsheet, which was almost impossible to search or query quickly, and full of repeats and errors, whereas my replacement database was a fraction of the size and fully relational. It looked almost identical to the old spreadsheet to users, but was far quicker, more intuitive, and above all, more reliable. Every time I returned, after 5 months' absence, someone in the IT Department had reverted it back to a huge, messy spreadsheet which I had to sort out before I could do my job. This went on for several years, after which I discovered that the problem was that nobody in IT really understood the advantages of databases. I expressed my incredulity in clear and succinct terms, then left them to their own devices. Turns out that after 6 or 7 months, their 'improved' spreadsheet had been deleting data during each save, until, finally, someone noticed that there was something wrong. They lost almost half of their data, because a mistake in their spreadsheet, which I had pointed out at the beginning, had been re-introduced. It cost them a lot of money. Only then did they decide that a database would be better than a spreadsheet. In fairness, they did apologise to me when I was doing an unrelated job for them, several years later. Sometimes you cannot teach people; they have to learn for themselves, and, all too often, they learn things the hard way.
@lilellia
@lilellia 2 жыл бұрын
A Python solution that's arguably too short for clarity. rules = {3: 'Fizz', 5: 'Buzz'} for i in range(1, 101): output = ''.join(repl for val, repl in rules.items() if i % val == 0) print(output or i)
@oundhakar
@oundhakar 2 жыл бұрын
It took me a good 15 minutes to read and understand that.
@vikumwijekoon3166
@vikumwijekoon3166 2 жыл бұрын
That's a good one.
@Rgriffproductions
@Rgriffproductions 2 жыл бұрын
@tr3v0r Line 1: Dictionary containing the word for each multiple Line 2: Start of for loop Line 3: Uses a set comprehension to create a tuple that contains whichever part evaluated as true. For any i in the iteration it will check if i%val == 0 is true for either val = 3 or val = 5 (the two keys in the dictionary), and if so it will put the corresponding 'Fizz' or 'Buzz' in the set. From there whatever is in the set (could be either 'Fizz', 'Buzz', both, or nothing) is joined with the empty string that was initialized right before the .join Line 4: If the string created in line 3 is an empty string that evaluates to false so it will output the number i, otherwise it will output whatever output string was created in the previous line
@WDCallahan
@WDCallahan 2 жыл бұрын
@@Rgriffproductions You took the time. You are commendable, friend.
@kacperroszczak6127
@kacperroszczak6127 2 жыл бұрын
good one bro
@torthejackal8579
@torthejackal8579 2 жыл бұрын
I'm taking an AP computer science course, and I was so proud of my self when I went and coded a working program that played fizzbuzz before you said how to.
@ChevronTango
@ChevronTango 6 жыл бұрын
I was always taught to code as if the person who had to maintain it after you was a bloodthirsty axe-wielding murder who knew where you lived.
@BrightBlueJim
@BrightBlueJim 6 жыл бұрын
Or an older you, but in my case I guess that's the same thing.
@acgandhi
@acgandhi 6 жыл бұрын
ChevronTango They probably are.
@xFuaZe
@xFuaZe 6 жыл бұрын
They will become so
@Firem1nded
@Firem1nded 6 жыл бұрын
It's funny, they often are.
@infectedp9419
@infectedp9419 6 жыл бұрын
It's "murderer".
@sourcererseven3858
@sourcererseven3858 4 жыл бұрын
Remember: The poor sod coming along in a couple years to modify that code might. be. you!
@daveh7720
@daveh7720 4 жыл бұрын
It's true. I've had to go back and change my code just a few months later and I sit there, scratching my head and wondering, "what was I thinking?"
@tsuchan
@tsuchan 4 жыл бұрын
If you want an easy life, always work on new projects.
@minhamsoo
@minhamsoo 4 жыл бұрын
I've had this nightmare of an experience as the poor sod fixing bugs in 10,000 lines of repetitive code. And not just one source code, but multiple 10,000-lines of repetitive sources. A simple bug fix would take days to accomplish because the variables were scattered absolutely everywhere, in multiple huge files. Ended up just refactoring everything as I went along. Eventually having to take just 5 minutes to fix a bug with the newly refactored code because the fix would require me to just change ONE thing instead of HUNDREDS.
@brendanpospischil3871
@brendanpospischil3871 4 жыл бұрын
Well you will probably have to modify others code, so show some courtesy and do what you expect of others.
@RedwoodGeorge
@RedwoodGeorge 4 жыл бұрын
There are those rare times when I come across a piece of five year old code and think "Past me was a genius!" Not all the time, mind you, but I like it when I used to be smart...
@madmanwithaplan1826
@madmanwithaplan1826 5 ай бұрын
no matter your level of coding we all agree the biggest sin in this code is no one left any notes.
@sgbirch
@sgbirch 2 жыл бұрын
Oh God, I really am old. I was already a professional programmer in the eighties when i became the a popular choice for int. FORTRAN used the variables I to N as integers. I was used most often, a habit that persists to this day.
@MsAnonymousFangirl
@MsAnonymousFangirl 4 жыл бұрын
So I know it's been 3 years and you'll probably never see this, but I just wanted you to know that this video inspired me to start coding again. I'm a very, very beginner programmer. I learned a tiny bit of JavaScript from Khan Academy a few years ago. I saw this video and went "HEY, WAIT! I could do that!" and then I paused the video and I went to Khan academy's program editor. Albeit using the println command because I can't use console.log there, I wrote your second actually successful program (the one with the else statements), exactly, line for line. And of course, as you said, it was still dodgy, but coming back to the video and seeing it listed as the slightly better solution than the worst one was invigorating. I wrote this! I made it work! and I didn't do it in the worst way either! Then, immediately, you gave me steps and strategies to improve, so now I'm inspired to continue. Thank you for making this video!
@raptora60
@raptora60 4 жыл бұрын
Just Monika.
@flockenlp1
@flockenlp1 4 жыл бұрын
Thats the beauty of coding, when you figure something out and it works. That's why I do it too.
@uzidayo
@uzidayo 4 жыл бұрын
Nice
@juanma9868
@juanma9868 3 жыл бұрын
So? How are you doing 3 months later?
@--.._
@--.._ 3 жыл бұрын
Monika, are you scheming something?
@dongzhuhuang6972
@dongzhuhuang6972 6 жыл бұрын
Easy, just hard code every number & fizz buzz
@user-mx4ok5me5x
@user-mx4ok5me5x 6 жыл бұрын
Dong Huang now do it for 1-1million
@MrLife4sin
@MrLife4sin 6 жыл бұрын
Duh! Obviously!
@Mikehikegaming
@Mikehikegaming 6 жыл бұрын
Dong Huang i hope you are joking
@satibel
@satibel 6 жыл бұрын
@Exter It's easy, make a program that writes each line of code for you.
@Gamez4eveR
@Gamez4eveR 6 жыл бұрын
That's a pretty girly way to do it
@trens1005
@trens1005 2 жыл бұрын
I always thought the reason "i" was used to demonstrate loops was because the word iterate begins with the letter "i". The reason for j,k etc... is because they're next in the alphabet.
@AndyZE123
@AndyZE123 2 жыл бұрын
Probably the most consistently interesting KZfaq channel there is. Thanks for your efforts.
@carb0nxl
@carb0nxl 6 жыл бұрын
Thank you for captioning your videos! -a Deaf subscriber
@mapelaanjakoodaansuomeksi3432
@mapelaanjakoodaansuomeksi3432 5 жыл бұрын
🤜👊✌️🖖🤜🤘👍🖖👍👉🤜🤘👍✍️🤚👎🖖👋✊👌☝️
@kipchickensout
@kipchickensout 5 жыл бұрын
really?
@mapelaanjakoodaansuomeksi3432
@mapelaanjakoodaansuomeksi3432 5 жыл бұрын
@@kipchickensout r/woooosh
@kipchickensout
@kipchickensout 5 жыл бұрын
@@mapelaanjakoodaansuomeksi3432 r\woosh
@mapelaanjakoodaansuomeksi3432
@mapelaanjakoodaansuomeksi3432 5 жыл бұрын
@@kipchickensout do you even know what that means
@ijustfelldown
@ijustfelldown 4 жыл бұрын
I'm a Civil Engineering student, have never coded anything except "Hello World" in highschool and still understood what was going on. Felt awesome.
@olliefischer
@olliefischer 4 жыл бұрын
tom's just that good at teaching m8 😊
@snickerdoooodle
@snickerdoooodle 3 жыл бұрын
I'm a computer science major. I wound up getting a job in civil engineering pls help
@puntherline
@puntherline Жыл бұрын
When I watched this video about 2 years ago I couldn't understand any of the code shown in the video. I just happened to remember it while coding in my spare time and though I'll give it a shot now. Paused the video at 1:11 and got to work in Lua. Once I finished, I kept watching and found out that my code is essentially the same as what Tom has shown at 6:05. And after 6:35, leaving the problem to fix for someone else, it barely took me a minute to actually fix it. I can't tell you how good it feels to finally have a comparison between my old knowledge and my current knowledge.
@gavros9636
@gavros9636 Ай бұрын
I raise you my habit of making every single thing a function. Functions that call functions that call more functions, functions that call themselves recursively in one case.
@theodorechandra8450
@theodorechandra8450 4 жыл бұрын
"Im writing in JS, it's not the best language, but it is one of the easiest" Me coding in python : what?
@Flackon
@Flackon 4 жыл бұрын
Python is both an easy language to start with and a good one. JS is not.
@jujuProductions
@jujuProductions 4 жыл бұрын
actl with py experience its p ez to start basic js because its almost the same just with slightly different syntax
@Flackon
@Flackon 4 жыл бұрын
@@jujuProductions python has radically different syntax to JS
@jujuProductions
@jujuProductions 4 жыл бұрын
@@Flackon like basic basic js
@chrispo7610
@chrispo7610 4 жыл бұрын
Imo js is the worst beginner language
@sablesoul
@sablesoul 6 жыл бұрын
I love how his programming reflects his nature as a linguist. He approached the problem from the "word" side instead of the algo side.
@jsonkody
@jsonkody 5 жыл бұрын
I would do it exactly same and I am not linguist. This problem is about words not so much about algorithms.
@nekogod
@nekogod 5 жыл бұрын
When I was learning programming we were taught to always start with suedo code in plain english as it made it much easier to understand what the code was supposed to be doing For example if I've written "When count is greater than 7 output a message box saying limit reached" and then I write "if varx
@michaelscofield2652
@michaelscofield2652 5 жыл бұрын
Do you even know what ur saying or just picked something up from a lecture at school?
@nekogod
@nekogod 5 жыл бұрын
@@michaelscofield2652 yes I know what I'm saying
@daydodog
@daydodog 5 жыл бұрын
Yeah we were told to pseudocode but I've found it's largely a waste of time for most problems. The only time I ever really bother is with recursive algorithms
@StraveTube
@StraveTube 2 жыл бұрын
6:18 That's why 15015 is my favorite number. FizzBuzzFuzzBizzBiff
@MonsPubis7
@MonsPubis7 2 жыл бұрын
4 years of programming in college, and youve explained it better than 90% of tutorials and all my college professors combined. Thats actually hilarious, maybe you should make a separate channel dedicated to teaching people, obviously you are, youre teaching solutions, problems, and everything really with the world. Id sub to that channel in a heartbeat(yes ik how to code, but seeing another perspective and showing it and explaining it better is always a priority to me) i never like youtube videos, but im givin this vid a like
@jd-zr3vk
@jd-zr3vk Жыл бұрын
You are hearing this again and it is just now clicking. You understand because of our college professors.
@KidsLearnHTML
@KidsLearnHTML Жыл бұрын
I know you're telling the truth. I feel sad and angry about this! This is from an online article about James Altucher (chess master and best selling author) . It said: Altucher says he ended up taking on "massive" debt to go to Cornell, where he majored in computer science. He then attended graduate school, though he dropped out before finishing the degree. He says he still didn't have the skills needed to enter the workforce. *"When I finally got a job, I was so bad at computer programming they had to send me to remedial classes for two months so I could be good enough to do the minimum required at my job," he explains. "So I'm not sure what I went to college for."*
@user-fr2fm3ri3w
@user-fr2fm3ri3w Жыл бұрын
He taught you how to make a hello World loop your professors taught you more important stuff I’d hope
@zombieallen
@zombieallen 3 жыл бұрын
I've been learning C++ for just under a month and decided to take this on as soon as I learned about for loops. I managed to figure it out using those nested if-else statements, and I'm absolutely thrilled that I was even able to get it to work. I see now that my code is dodgy, but that's okay! My goal was for it to work, and that was hard enough. I hope in time I learn to think ahead and code clean, but for now I will take the win :)
@RutgerOlthuis
@RutgerOlthuis 2 жыл бұрын
I try to avoid else as much as you can. Using break/return statements to bail out of nested places when possible.
@LRM12o8
@LRM12o8 2 жыл бұрын
In C++, why not use SWITCH? Way easier to understand and expand. IF should only be used for decisions with two possible outcomes. (yes, they compile to the same, but a bunch of IFs stringed together gets confusing fast)
@WyvernYT
@WyvernYT 2 жыл бұрын
Agreed. At a month into learning programming you're just fine playing with loops and if-then-else statements. You're doing great; don't worry about the advanced stuff.
@KF-zb6gi
@KF-zb6gi 2 жыл бұрын
Hello if else fellow, I did it too👋🏻👋🏻
@nikkiofthevalley
@nikkiofthevalley 2 жыл бұрын
@@LRM12o8 You also can get stuff too long for a switch statement, in which case you probably want to do it dynamically if you can
@agg4000
@agg4000 4 жыл бұрын
1:59 “that’s not instantly translatable into code” [laughs in Haskell pattern matching]
@humm535
@humm535 4 жыл бұрын
[laughs in Go’s switch-statements]
@isweartofuckinggod
@isweartofuckinggod 4 жыл бұрын
[laughs in LittleBigPlanet2 selector blocks]
@cryotheus115
@cryotheus115 4 жыл бұрын
[laughs in Scrap Mechanic logic blocks]
@igornowicki29
@igornowicki29 4 жыл бұрын
[laughs in Minecraft Command Blocks]
@Kevin-kb
@Kevin-kb 4 жыл бұрын
[laughs in OCaml almighty pattern matching]
@scruffythejanitor8105
@scruffythejanitor8105 3 жыл бұрын
I always figured “i” was for “index.” So you are giving an index number to each pass through the loop.
@farkler4785
@farkler4785 3 жыл бұрын
to fix the repetition part you could make the if statements a function, something like function isMultiple(number, multiple, result) { if (number % multiple == 0) { return result } else {return " "} } And then in the loop do: output += isMultiple(i, 3, "Fizz") output += isMultiple(i, 5, "Buzz")
@Misteribel
@Misteribel Жыл бұрын
But now you’re still repeating yourself. Instead, consider putting the ‘3’, ‘5’ etc rules in a little list, with their expected outcome, and you get a generic solution, without repetition. Make those rules an argument to the function, and it becomes composable.
@nelimalu601
@nelimalu601 3 жыл бұрын
After reading some comments I came to the conclusion that "i" means one of the following: - index - iteration - iterator - increment - integer
@jackk3094
@jackk3094 3 жыл бұрын
Iterator although it could be index if you are working on arrays or something
@DBZM1k3
@DBZM1k3 3 жыл бұрын
Iota is another meaning. In fact languages like c++ have a function called iota which will fill array with sequentially increasing values starting from a value you decide.
@sn0wgleb
@sn0wgleb 3 жыл бұрын
Index is the best way to think about it. There are iterators in other languages and they are a bit different.
@MrKogarou
@MrKogarou 3 жыл бұрын
I assume it's originally from math... xyz and ijk are common variable/dimension names. When not using xyz coordinates, ijk is the more available set of short variable names, and thus eventually became the convention.
@darshan5044
@darshan5044 3 жыл бұрын
Integer best suited
@unit0007
@unit0007 6 жыл бұрын
I learned to code C from an old book from the 80s, and the book said that 'i' stands for iteration. And that's the way I have been thinking about it ever since. And a quick google search told me that convention of using 'i' to mark iterations has deep roots in mathematics, reaching way back to the pre-digital age.
@launchsquid
@launchsquid 6 жыл бұрын
sounds right to me, I was told it stood for integer but I believe your explanation more.
@Roxor128
@Roxor128 6 жыл бұрын
I thought of it as "iteration", "index" or "increment" depending on what the loop was doing.
@senorpoodles1755
@senorpoodles1755 5 жыл бұрын
"i" for iterator.
@experimentators8699
@experimentators8699 5 жыл бұрын
I just used i because it had no meaning, because i is a temporary variable
@uchihasurvival
@uchihasurvival 5 жыл бұрын
@@launchsquid n stands for integer in general. i, j and k are used for iteration. Sounds familiar? It's also used to represent vectors in math, but in C, it's arrays.
@ahreuwu
@ahreuwu 2 жыл бұрын
I recently took a quick js course and I can proudly say that I recognize all the code in here. I haven't put any mental effort on trying to solve the problem, but I now understand exactly what's going on where and why the last code is much better than the other!
@KanpachiGaming
@KanpachiGaming Жыл бұрын
Good point about not leaving too much of a mess for those tasked to maintain your code in the future, I've been on the receiving end of such a mess and it is an absolutely hellish experience.
@givrally7634
@givrally7634 3 жыл бұрын
Had a question like that in an interview. I asked for specifics. Does it need to be fast ? Or short and efficient ? Does it need to use as little memory as possible ? I already had a few ideas how to do it, but only after those questions had been answered did I know what the best one was. In your job and even more importantly in your job interview, you don't want to just give an answer, you want to give the best answer, and that needs knowledge of the problem.
@MunyuShizumi
@MunyuShizumi 2 жыл бұрын
Maintainability also becomes a thing, especially when it comes to potential future changes. Will multiple matches always append words or is FizzBuzz for 3&5 actually a special case where appending just incidentally works? Should conditions be evaluated in a specific order? Will there be negative conditions (like with leap years)? Non-modulo conditions? Etc. There's at least a dozen good solutions depending on what the goals are, which makes this problem a lot more profound than it initially seems.
@carnap355
@carnap355 Жыл бұрын
Its mod 3*5 elseif mod 3 elseif mod5 else i
@toxic_narcissist
@toxic_narcissist Жыл бұрын
totally wrong. If they ask you to do it you do it. I wouldn't hire you
@X3zbeth
@X3zbeth Жыл бұрын
@@toxic_narcissist I wouldn't work for you then
@tomsterbg8130
@tomsterbg8130 Жыл бұрын
@@toxic_narcissist good luck hiring someone nice and competent (username checks out)
@edgeeffect
@edgeeffect 6 жыл бұрын
using "i" as a loop variable dates back to ForTran. In ForTran, variables were one letter and most were automatically real/float but a few (I don't remember how many) starting at "i" for "Integer" were automatically integers (and ideal candidates for loop indexes). ForTran was a diabolical language. I always like to use "c" for loop counters 'cus I still get a pathetic geeky thrill out of writing "C++" and it being valid code.
@mspenrice
@mspenrice 6 жыл бұрын
That probably explains why my dad used to write Sinclair BASIC progs with i and j (and occasionally k or even l) as the variables for his FOR-NEXT loops... before he ended up in management his gruntwork was a string of programming gigs on industrial mainframes that used that kind of hoary old language. Always thought it was a bit odd, and that maybe he was "leaving space" to use the lower letters for other purposes or something... (hey, I was like five years old, I knew nothing)
@glorylyfe8314
@glorylyfe8314 5 жыл бұрын
i stands for index.
@MideoKuze
@MideoKuze 5 жыл бұрын
^"i for index" comes from math, as do j and k. Current Fortran specs implicitly type variables starting with various initial letters, but you can disable them. Fortran is still in extensive use because of its performance in vector arithmetic, interestingly enough. It's not particularly hard to write in, once you get the hang of it.
@albertbatfinder5240
@albertbatfinder5240 5 жыл бұрын
The implicit integer variable names in fortran were those that started with i j k l m n. Or i to n, or the “in” crowd as I used to remember them. “In” for integer if you prefer. As a default I preferred “k”, because it doesn’t look like the numeral 1 or the lower case L. K was my kounter. This habit has persisted for 40 years.
@dasemmiyogurt6288
@dasemmiyogurt6288 5 жыл бұрын
For some reason I use k. And if I have a second for loop in a loop then I use c.
@snjert8406
@snjert8406 3 жыл бұрын
I am now fricken pondering on this for more than half an hour and I'm mad at you for bringing this into my head
@thomashanson6603
@thomashanson6603 2 жыл бұрын
Thanks for making this, I haven't done any coding in a few months since my last class, it was nice to brush off the dust on it.
@Blabla130
@Blabla130 6 жыл бұрын
Now I want a video of Tom playing FizzBuzzFuzzBizzBiff
@philadams9254
@philadams9254 6 жыл бұрын
Yes please
@derkateramabend
@derkateramabend 6 жыл бұрын
Definitely
@barnowl2832
@barnowl2832 4 жыл бұрын
is that 3,5,7,11,13 or something?
@ethandole2218
@ethandole2218 4 жыл бұрын
Have a different word for each prime number less than 1000
@howmuchbeforechamp
@howmuchbeforechamp 4 жыл бұрын
This has taught me more about code than 2 hours of tutorials
@berkgaffaroglu8614
@berkgaffaroglu8614 3 жыл бұрын
bruh
@ammyvl1
@ammyvl1 3 жыл бұрын
@@arlingtonhynes how do you propose someone learns to code, if tutorials are not allowed
@arlingtonhynes
@arlingtonhynes 3 жыл бұрын
@@ammyvl1 Programming tutorials are usually written by bad programmers who don’t understand the material. Learning something wrong is not the same as learning it right. If you can’t grasp that, go away. Then again, if you didn’t understand my comment, you’re a hopeless idiot.
@mohit_panjwani
@mohit_panjwani 3 жыл бұрын
@@arlingtonhynes snob.
@arlingtonhynes
@arlingtonhynes 3 жыл бұрын
@@mohit_panjwani Getting it right actually matters. Clown.
@nazifahamid6587
@nazifahamid6587 2 жыл бұрын
Please post more videos about coding tom! I feel like i learn more from this 7 min videos than hours of other tutorials.
@sofiaknyazeva
@sofiaknyazeva Жыл бұрын
Few notes and if you do it in C 1. You can break after matching last modulo which will remove the overhead of having another if statement at the end 2. For more efficiency, you can remove modulo checking since it's a O(n) algorithm, a larger value would significantly decrease the performance on low end systems. Computers are slower at division, especially floating point. 3. JS console.log(...) always adds a newline at the end. If you use nodejs you can use process.stdout.write(...) which directly calls write(...) syscall without overheading of having a newline. Of course, it still buffer. 4. C doesn't have this, so FizzBuzz will he printed on that same line. :)
@antonhelsgaun
@antonhelsgaun 8 ай бұрын
What would you do instead of modulo?
@InstaFall
@InstaFall 6 ай бұрын
Yea FizzBuzz would be printed but also all the other numbers that comes after a "Fizz" because you didn't add a " " so not a correct solution
@widjadija
@widjadija 3 жыл бұрын
This was so easy to understand even though I have almost zero coding experience. I wish I had you as a professor
@KingUnity22
@KingUnity22 2 жыл бұрын
Programming is just putting logic into words and symbols. So long as you can think, you can code.
@christopheraplin
@christopheraplin 2 жыл бұрын
@@KingUnity22 Not to mention, once you can speak the 'language' all you're doing is googling your problems.
@railgap
@railgap 4 жыл бұрын
from TimDay on StackOverflow: "Mathematicians were using i,j,k to designate integers in algebra (subscripts, series, summations etc) long before (e.g 1836 or 1816) computers were around (this is the origin of the FORTRAN variable type defaults). The habit of using letters from the end of the alphabet (...,x,y,z) for unknown variables and from the beginning (a,b,c...) for constants is generally attributed to Rene Descartes, (see also here) so I assume i,j,k...n (in the middle of the alphabet) for integers is likely due to him too." There you go.
@davidelrizzo
@davidelrizzo 4 жыл бұрын
I just learnt something
@NOTNOTJON
@NOTNOTJON 4 жыл бұрын
i is for integer 'nuff said.
@QqJcrsStbt
@QqJcrsStbt 3 жыл бұрын
This would help understanding how FORTRAN ended up with i to n as integer naming initials, so far great. I was not aware of of 19th C conventions. My guess is that engineering/scientific programmers of my generation brought up on 14" Winchesters, punched tape, music ruled paper and teletype terminals developed some rigid habits through the use of FORTRAN. IBM FORTRAN was '56 maybe, I cut my teeth on FORTRAN 77 on a Perkin-Elmer, K&R came out '78? My money goes on FORTAN for 'popularising' it and their fore fathers for insping/informing them.
@psyarts8687
@psyarts8687 3 жыл бұрын
I j k and are actually used in linear algebra to denote the values of a vector so it’s still very common
@mrosskne
@mrosskne 3 жыл бұрын
i means iterator. this isn't a mystery. it's common knowledge.
@aes0p895
@aes0p895 Жыл бұрын
you don't really do different things if the number is divisible by both, you just do both things (assuming you're doing a concat which you should) . :) thanks for the fun video, tom!
@pavelcistjakov243
@pavelcistjakov243 Жыл бұрын
Hi Tom! 5 years on, this is still relevant. I was told if I get to my final stage of interviews fizzbuzz would be the challenge
@chrisb9319
@chrisb9319 4 жыл бұрын
You need an "i"terator for your loop. That's why you use i.
@dorijancirkveni
@dorijancirkveni 4 жыл бұрын
*mind blown*
@alexkantor8238
@alexkantor8238 4 жыл бұрын
it's also the "i"ndex
@luckymouse1988
@luckymouse1988 4 жыл бұрын
When I was a youngin', I associated the i with the practice of "i"ncrementing
@RandomTomatoSoup
@RandomTomatoSoup 4 жыл бұрын
nah it's from integer
@jlc5639
@jlc5639 4 жыл бұрын
No it was because really old machines needed to be as efficient (short) as possible. I believe it started with machines that used punch cards as storage. Proper physical memory
@mg5347
@mg5347 4 жыл бұрын
'pause the video and have a go at it' When I did my GCSEs 12 years ago my IT teacher told me it would be a waste of money to even put me in the exam
@PrimeGamator
@PrimeGamator 4 жыл бұрын
What a nice teacher...
@brooksgunn5235
@brooksgunn5235 4 жыл бұрын
Did you prove him wrong?
@mg5347
@mg5347 4 жыл бұрын
@@brooksgunn5235 nope, can't use a computer for anything other than word and video games...to be fair there's not much need of a smith who codes
@dustinandrews89019
@dustinandrews89019 3 жыл бұрын
I had a similar experience with, but I did end up as a computer programmer.
@TypicallyThomas
@TypicallyThomas 2 жыл бұрын
I made a solution in Python. I'm quite proud of it: rules = [[3, "Fizz"], [5, "Buzz"]] for i in range(1, 101): output = "" for rule in rules: if i % rule[0] == 0: output += rule[1] if output == "": output = i print(output)
@JonMW
@JonMW 2 жыл бұрын
Son, that should be a dict. rules = {3: "Fizz", 5: "Buzz"} for i in range(1, 101): output = "" for divisor, word in rules.items(): if i % divisor == 0: output += word if output == "": output = i print(output)
@TypicallyThomas
@TypicallyThomas 2 жыл бұрын
@@JonMW That's also an option
@sohummohare6364
@sohummohare6364 2 жыл бұрын
Very cool
@yeetdeets
@yeetdeets 2 жыл бұрын
​@@JonMW The results should be pre-calculated and put into a dict as well. Takes less time to multiply the special cases than to check every number against a logic statement with division in it. ----------------- low, high = (1, 101) # if you don't understand the following two lines, look up "list comprehension" fizz = {i*3: "Fizz" for i in range(low//3, high//3)} buzz = {i*5: "Buzz" for i in range(low//5, high//5)} for i in range(low, high): # dict.get defaults to returning None if key doesn't exist # None checks as False in an if-statement if fizz.get(i) or buzz.get(i): # The default return value from dict.get can be changed with a second argument print(fizz.get(i, "")+buzz.get(i, "")) else: print(i) ---------------- Trying to add the idea of a rules dict makes it into list/dict comprehension city! ----------------- low, high = (1, 101) rules = {3: "Fizz", 5: "Buzz", 7: "Duzz"} results = {rk: {i*rk: rv for i in range(low//rk, high//rk)} for rk, rv in rules.items()} for i in range(low, high): # if the key doesn't exist, no list index is created. Meaning the list length will equal the number of keys found. resultList = [results.get(r).get(i) for r in rules if results.get(r).get(i)] # an empty list checks as False if resultList: # join is a string method which joins all strings in an iterable with the target string print("".join(resultList)) else: print(i) ---------------- This code can then be wrapped in a while loop where low and high is increased by 100 to make the game work infinitely.
@RideByAquib
@RideByAquib 2 жыл бұрын
mine is quite traditional : for i in range(1, 101): if (i % 3 == 0) & (i % 5 == 0): print(i, ": FizzBuzz") elif i % 3 == 0: print(i, ": Fizz") elif i % 5 == 0: print(i, ": Buzz") else: print(i)
@twokegs1
@twokegs1 2 жыл бұрын
Genuinely happy to see your uploads 😁
@deanmoncaster
@deanmoncaster 4 жыл бұрын
I'd just post on stack overflow and disguise it as a game of code golf and then hand in what they gave me.
@groszak1
@groszak1 4 жыл бұрын
then you find out it is a duplicate
@TomScottGo
@TomScottGo 6 жыл бұрын
The second in the three "Basics" videos: this one's about code, not opinions, so let's see what people think! I think I've managed to remove all the typos from my code. And if you're wondering about the blinkenlights behind me, that's the Centre for Computing History's Megaprocessor: pull down the description for a link to more details!
@TheWaWPRO
@TheWaWPRO 6 жыл бұрын
Love this.
@anxplodinturtle7928
@anxplodinturtle7928 6 жыл бұрын
Tom Scott this was cool! Quick question: I could have easily solved this with my single semester of Python coding that I took in college this year. Is that normal? It seems this test is a bit easy...
@OrigamiMarie
@OrigamiMarie 6 жыл бұрын
Tom Scott Always assume that the person who will maintain your code after you has violent tendencies and knows where you live.
@OrigamiMarie
@OrigamiMarie 6 жыл бұрын
AnXplodinTurtle Yes this test is easy. I've only seen it as a warm-up question before moving on to harder questions, usually as a quick filter when it's suspected that the interviewee can't code their way out of a paper bag. It's super useful for that!
@PMakerYT
@PMakerYT 6 жыл бұрын
AnXplodinTurtle It's supposed to be easy. It's not just about "Can you solve it?" (if you cannot, why are you applying for a coding job?), but also about *how* you approach the problem. Are you writing something that works and calling it a day? Or are you planning, weighing pros and cons, preparing for future needs?
@juandelacroix7419
@juandelacroix7419 2 жыл бұрын
Great explanation! I'm just learning how to code in Javascript and this has been very helpful. Thanks!
@GeronimOCZECH
@GeronimOCZECH 2 жыл бұрын
"Repeating yourself like this is a sign of dodgy code." - Folk who using global variable everywhere
@PhilThomas
@PhilThomas 6 жыл бұрын
Something else to think about, the "Pretty up later" style of coding does run into an issue with my old boss's idea of "what if you get hit by a bus" theory. IE there may not be a "later" that you can use to pretty up the code, and therefore you should make sure that if it must be ugly, that there are at least notes or comments explaining what is going on.
@toutlemonde5017
@toutlemonde5017 6 жыл бұрын
I don't think it's just about someone else taking over your code, though... I've definitely looked back at code I wrote six months ago and had no idea what the hell I was doing.
@fnorgen
@fnorgen 6 жыл бұрын
These function names made sense at the time, but what the hell does preArgCheck do? Or initSetFolow? What was I thinking?
@ObjectsInMotion
@ObjectsInMotion 6 жыл бұрын
If you get hit by a bus tomorrow better to have messy code that works than pretty code thats unfinished.
@draxiss1577
@draxiss1577 6 жыл бұрын
My Algorithms and ADT's professor told the class if that they got nothing else out of her class, at least make sure to provide documentation.
@AOEOt31os
@AOEOt31os 6 жыл бұрын
There's always someone else to pick up the slack and finish the work though, that's a great deal easier if the code is easy to follow and continue than it is to work through a spaghetti of mess. Bigger picture and future planning vs more immediate results.
@samuelljacksondacoolest
@samuelljacksondacoolest 3 жыл бұрын
Way 3: print ("1") print ("2") print ("Fizz") print ("4") print ("Buzz") print ("Fizz") ..and so on
@ZeldagigafanMatthew
@ZeldagigafanMatthew 3 жыл бұрын
Make it work on 7s instead of fives, and run it out to 500! You've got one minute to make the edits.
@Ezekia
@Ezekia 3 жыл бұрын
@@1ax i mean, no
@tomlamba6207
@tomlamba6207 3 жыл бұрын
@@1ax oof
@mootwo_
@mootwo_ 3 жыл бұрын
Zeldagigafan let me just pull out this random flash drive I have that coincidentally has the file for that
@clock4883
@clock4883 3 жыл бұрын
@@1ax This is super true, I used to be an active roblox developer using proper programming techniques, and... To say the least, HOLY CRAP ROBLOX LUA DEVELOPERS ARE SO TERRIBLE 99.99% OF THE TIME, People would get me to work on a project because they couldn't find someone else to do it, so I'd help them out just to see that another dev had been there, only just to dump thousands of lines of spaghetti and garbled bad techniques. I'd just delete all of their code and script objects and do my job after that had been revealed to me. So glad I don't work with roblox development anymore. Apologies for any grammar errors, im too lazy to fix em
@baldeepbirak
@baldeepbirak Жыл бұрын
You can store the numbers as variables to declare once. Also you can use switch statement.
@martinpaulsen1592
@martinpaulsen1592 8 ай бұрын
No, you can't use a switch statement, because you're not testing the same value against multiple possibilities where it can only be one of the possible values. A switch would be for something like "press 1 for English, press 2 for Spanish, press 3 for Sindarin..." In this code, you only test each value (i mod 3, i mod 5...) against one possibility.
@akni3547
@akni3547 2 жыл бұрын
I knew nothing about coding prior to this video. And that was so satisfying, him making the code more compact, bit by bit.
@hendriks_kevin
@hendriks_kevin 5 жыл бұрын
Always program so the next person can understand what you ment to do, because it could be you in 5 years (or later).
@sergeant5848
@sergeant5848 5 жыл бұрын
5 years? A couple of weeks is all it takes me to forget nowadays!
@JNelson_
@JNelson_ 4 жыл бұрын
Try 40 years.
@julianmeier5235
@julianmeier5235 4 жыл бұрын
If you want to keep your job, you have to write code that noone else understands. This way they can t replace you cause you re the only one who can maintain the code ;)
@zain4019
@zain4019 4 жыл бұрын
Julian Meier :(
@vishakapajapaksha4784
@vishakapajapaksha4784 4 жыл бұрын
@@julianmeier5235 i had a co worker who does that
@adambruzon8339
@adambruzon8339 4 жыл бұрын
Depending on who you ask, "I" could stand for iterator, integer or index...
@milankowww
@milankowww 3 жыл бұрын
Or iguana for that matter. But the only correct answer is integer. Learn your Fortran already
@alexwales8914
@alexwales8914 3 жыл бұрын
Or the square root of -1
@looserty819
@looserty819 3 жыл бұрын
I use x, I feel like I'm weird
@edbarnard6429
@edbarnard6429 3 жыл бұрын
@@looserty819 simple algebra thought process, it's not weird. you just thought, "well i need a letter to represent a number, and everyone just uses "x" for that"
@DarthGTB
@DarthGTB 3 жыл бұрын
I usually use a word. in this case could be "index" or "iteration" (instead of iterator) because sometimes you are going to use that variable inside the loop, so I do that for the sake of readability
@joshuan.
@joshuan. 2 жыл бұрын
I finally got around to following along with this after putting it off for 3 years.
@maddy3852
@maddy3852 Жыл бұрын
I used to watch these when I was younger and I didn't understand them at all because I knew nothing about coding. Now I am taking a programming class and these vids are starting to make a lot more sense.
@config2000
@config2000 4 жыл бұрын
Console.log("Virus detected. Switch off immediately!"); Phew .. Dodged a bullet there.
@Ken.-
@Ken.- 4 жыл бұрын
"We like to see how well you can program. Can you write a program that writes out FizzBuzz one hundred times?" "Uh, what will this job be for?" "Lead Programmer for Windows 10."
@bramkivenko9912
@bramkivenko9912 4 жыл бұрын
Quite rare a comment makes me laugh hard!
@zach7482
@zach7482 4 жыл бұрын
Go full programmer on them. Print fizzbuzz 100 times, like they said.
@sergey1519
@sergey1519 4 жыл бұрын
@@zach7482 python 3 print ("FizzBuzz "*100)
@superhavi
@superhavi 4 жыл бұрын
Print "FizzBuzz one hundred times?"
@drklimbal
@drklimbal 4 жыл бұрын
100.times { puts "fizzbuzz" }
@bestcreations4703
@bestcreations4703 Жыл бұрын
When I was making a slideshow for a programming workshop I had to present I included fizz buzz on it, and I wanted to write it in a way that was both the most simplistic and yet readable that you could since I was fitting it on a slideshow. I ended up using a string to hold my output, do the check for the fizz and buzz and if it were true I would simply append the text. Then I check if the string was empty, if so I added the number to it. Then I added a new line character and printed it. Very simple, no complicated if-else if-else or anything of the sort. Computationally it’s not doing anything super laborious either. Obviously it is not the best in any way, but it wasn’t designed to be it was designed to be compact yet digestible to starting programmers while still showing the unique ways you can solve a problem and I think I did that.
@sploofmcsterra4786
@sploofmcsterra4786 2 жыл бұрын
Counterpoint: what if they ask you to say "Pop" on multiples of both? While your solution might seem more clever, it assumes something about how the problem might vary.
@Ice.Lord_
@Ice.Lord_ 2 жыл бұрын
I came up with this in java script: const fizzBuzzObject = { Fizz: 3, Buzz: 5, Pop: 15, } const fizzBuzzArray = Object.entries(fizzBuzzObject).sort((a, b) => b[1] - a[1]) for (let i = 1; i
@sodiboo
@sodiboo 2 жыл бұрын
swift for i in 0..
@sovietcrab1876
@sovietcrab1876 2 жыл бұрын
If I = "fizzbuzz" I = "pop"
@montgomeryfrenwheringwerth5584
@montgomeryfrenwheringwerth5584 2 жыл бұрын
Problem is for loops and if statements are very slow for computers. I did a comparison in python. The arrays method took 0.2 seconds to do a million numbers, and the for loop with conditional statements took 66 seconds for 1 million numbers. Here is my code. import pandas as pd import numpy as np import timeit() def fizzbuzz(n): array = np.array( range(n) ) fizz_buzz = array[ array % 15 == 0 ] buzz = array[ array % 5 == 0 ] fizz = array[ array % 3 == 0 ] array[fizz] = -1 array[buzz] = -2 array[fizz_buzz] = -3 df = pd.DataFrame(array) df = df.replace(-1, 'Fizz') df = df.replace(-2, 'Buzz') df = df.replace(-3, 'Fizz-Buzz') df.iloc[0] = 0 print(df) def fizz_buzz(n): df = pd.DataFrame( np.array( range(n) ) ) for i in range(n): if i % 15 == 0: df.iloc[i] = 'Fizz-Buzz' if i % 5 == 0: df.iloc[i] = 'Buzz' if i % 3 == 0: df.iloc[i] = 'Fizz' df.iloc[0] = 0 print(df) start_time = timeit.default_timer() fizzbuzz(1000000) print(timeit.default_timer() - start_time) start_time = timeit.default_timer() fizz_buzz(1000000) print(timeit.default_timer() - start_time)
@emraef
@emraef 2 жыл бұрын
out.replace("FizzBuzz", "Pop"); gang gang
@Jabrils
@Jabrils 6 жыл бұрын
Tom, that backdrop 😍
@Codingale
@Codingale 6 жыл бұрын
Oh it's Jabrils! Cool! I'd say Tom should do a video on machine learning but that's more your style!
@huntmich
@huntmich 3 жыл бұрын
I feel like Tom Scott is somewhere between 25 and 50.
@ivan-1876
@ivan-1876 2 жыл бұрын
if "Tom Scott" > 25 and "Tom Scott" < 50: print("True. Tom Scott is {} age".format("unknown"))
@TypicallyThomas
@TypicallyThomas 2 жыл бұрын
@@ivan-1876 Yes, except... Why are your variables strings?
@ivan-1876
@ivan-1876 2 жыл бұрын
@@TypicallyThomas I'm not creating a Tom Scott variable because then I would need to add a _ in place of the spaces and it would look bad haha that's the whole reason
@wateryagarvideos5186
@wateryagarvideos5186 2 жыл бұрын
@@ivan-1876 Python I see?
@ivan-1876
@ivan-1876 2 жыл бұрын
@@wateryagarvideos5186 It's the only language I've learnt if you don't count scratch
@corrupt1921
@corrupt1921 2 жыл бұрын
a good way to have expandability is have 2 parameters to the functions (inputs) one with a list (array) of objects each one with the number and outputted word, then have your function create the tests for each of them itself, thatway instead of changing the function you merely change the inputs too it and get the results you want
@LV-ii7bi
@LV-ii7bi 2 жыл бұрын
6:32 You would create an array with the divisors, and a function that takes 3 params, i, divisor and output, an optional function parameter too if you want to process the output.
@jellie4295
@jellie4295 6 жыл бұрын
I love this video. I actually paused and got up from my lazy ass and programmed something! And after an embarassingly long period of time it worked! Yaaaay! Thank you Tom, I'd love to watch more videos like this, and my programming teacher will be glad that I didn't forget _everything_ in the holidays :)
@noboilfrog9431
@noboilfrog9431 5 жыл бұрын
Yes it made my fingers twitch too.
@pravinrao3669
@pravinrao3669 5 жыл бұрын
it took me 3 minutes.I am not even in college just in school. class IX
@asgeiralbretsen
@asgeiralbretsen 5 жыл бұрын
@@pravinrao3669 You are blissfully unaware of how you are the butt of many jokes. It's easy to tell from your narcissistic and braggy comment.
@Die-Coughman
@Die-Coughman 5 жыл бұрын
same dude
@jamestanis3274
@jamestanis3274 4 жыл бұрын
@@pravinrao3669 Doesn't count without source :-)
@possiblykale
@possiblykale 3 жыл бұрын
I remember doing this in a computer science class, and I took the time to set up the string to add everything too, made a careful plan for my method, and my final code just ended up looking like the truly bodged code.
@XamiNaxamis
@XamiNaxamis 3 жыл бұрын
Tried this in C++, went with a modular but super front-loaded solution by declaring two arrays with the divisible numbers to use and the strings to look for, then used pointer arithmetic to auto-calculate the length of the arrays in a nested loop that runs thru both arrays to check the counter of the bigger loop. Sightly unwieldy and I probably didn't explain it well, but it worked okay!
@osbourneclark2487
@osbourneclark2487 2 жыл бұрын
fun fact: the Hungarian notation practise where you use a prefix (such as "i" meaning "index") to add information to the variable like: the type of data it is storing what its being used for.
@dunebasher1971
@dunebasher1971 6 жыл бұрын
That Megaprocessor is the most sci-fi-looking thing EVER. It ought to be making noises thought. Beeps, ticks, whirrs. Like a proper 60s or 70s fictional TV computer.
@jacobhuckins494
@jacobhuckins494 6 жыл бұрын
would be cool to stick a little clicker on each of the LEDs and let it run
@bbdawise
@bbdawise 6 жыл бұрын
I'm also imagining it running a bicycle wheel somewhere with a card in the spokes.
@mspenrice
@mspenrice 6 жыл бұрын
attach a piezo buzzer and a couple of 555s plus the appropriate discrete components (one set for a short duration one-shot pulse, the other tuned to oscillate at a certain frequency different from all the other nearby ones) to each one? Beepboop city.
@PGReviews
@PGReviews 6 жыл бұрын
Or just abuse the hell out of JS: for(i=0;i
@BrianFrichette
@BrianFrichette 6 жыл бұрын
Kreditworks 😂 I love it.
@Roxor128
@Roxor128 6 жыл бұрын
Is there a JavaScript version of the Obfuscated C Contest? That looks like it would belong in it.
@philadams9254
@philadams9254 6 жыл бұрын
I think that's certainly the shortest way. I think this would win in "Code Golf" but it's not easy to read.
@MsHojat
@MsHojat 6 жыл бұрын
That's nice. At least for "code golf".
@DaRealMaus
@DaRealMaus 6 жыл бұрын
Very nice job, only complaint would be that it starts at 0 and goes to 99 instead of start at 1 and go to 100 :)
@4thalt
@4thalt 8 ай бұрын
As someone who doesn't even code, I noticed a flaw. Instead of checking if the number is a multiple of 3 and 5 at the same time, you could check if it's a multiple of 15 instead. All multiples of 15 are also multiples of both 3 and 5, and now you need only one check instead of 2. Then you could also set the multiple of 15 to the string "FizzBuzz", so that you don't get the answers showing up in two lines thing.
@vigormortishs
@vigormortishs Жыл бұрын
Damn, I wanted to implement this point of view while I was teaching. Your resources are so good for education. I know it's an old video, I discovered you recently, just keep up, you are awesome :)
@krubbles101
@krubbles101 5 жыл бұрын
The reason that we use "i" "j" and "k" is because I- N defaulted to an integer in Fortran.
@clickrick
@clickrick 4 жыл бұрын
I'm glad someone else remembers that!
@IngeniousIgneous
@IngeniousIgneous 4 жыл бұрын
ijk are also hella common mathematic iterators
@MrCmon113
@MrCmon113 4 жыл бұрын
No, those are much older than that.
@TealJosh
@TealJosh 4 жыл бұрын
@@IngeniousIgneous literally almost as common in maths as xyz. Also related, lul.
@digitig
@digitig 4 жыл бұрын
But that just moves the problem on a step: why was I to N chosen as the default integer range?
@filiphendrik8108
@filiphendrik8108 6 жыл бұрын
Wait, this is a childrens game? I only knew it as an interview question...
@RyanLynch1
@RyanLynch1 6 жыл бұрын
Filip Hendrik sounds like a children's game for young programmers 😂😂
@ivolol
@ivolol 6 жыл бұрын
Or, a drinking game where you add a couple more conditions to replace numbers and require consumption of a shot upon a mistake!
@H4KnSL4K
@H4KnSL4K Ай бұрын
Nicely animated! And great solution - Thanks
@HiHelloHi
@HiHelloHi 3 жыл бұрын
Asking for the type of solution before attempting the question would probably be worth while. A one liner for space that's more unreadable vs a function called in a loop that takes in the values to look for, returns a value and abstracts unecessary details when used by others
@TheMonkeystick
@TheMonkeystick 6 жыл бұрын
I respectfully disagree on that last point, unmaintainable code means job security :p
@doctormo
@doctormo 6 жыл бұрын
And a less fit company that could be sunk by smaller issues. (so don't try this at a start up)
@Zadster
@Zadster 6 жыл бұрын
Not if you work in an environment that has code critical reviews and/or quality assurance. You get found out pretty quickly.
@vinterskugge907
@vinterskugge907 6 жыл бұрын
In my experience, it instead leads to pressure to have someone else rewrite and scrap the offending code. So instead of creating job security for yourself, you are creating opportunities for others to replace you.
@AngelWedge
@AngelWedge 6 жыл бұрын
If you can't be replaced, you can't be promoted.
@ristopaasivirta9770
@ristopaasivirta9770 6 жыл бұрын
"No no, you don't understand, Brainfuck is THE BEST programming language to solve this particular problem!"
@ndxdirectorscut
@ndxdirectorscut 4 жыл бұрын
i like to call my Programming style "versatile Bodge" basically i bodge things together, however I use alot of variables to let me edit the code later without editing the logic. i like to believe it makes it easy to edit for non-programmers as i have all the variables properly named at the top
@lucky-segfault4219
@lucky-segfault4219 3 жыл бұрын
Honestly id rather work on code like this than just about any other, assuming you put some comments in to explain the weird or difficult to understand bits of logic
@StilvurBee
@StilvurBee 3 жыл бұрын
amen
@MazeFrame
@MazeFrame 3 жыл бұрын
That is how I do it for uControllers, Arduino or when doing a quick proof of concept in Processing.
@almogyalin
@almogyalin 2 жыл бұрын
In case anyone's interested, there's a way to solve this problem in python without using the modulo operator. The trick is to use generators. def naturals(): n = 1 while True: yield n n += 1 def mod_rule(gen, n, phrase): while True: for m in range(n-1): yield next(gen) next(gen) yield phrase gen = naturals() for n, phrase in zip([3,5,15],['fizz','buzz','fizzbuzz']): gen = mod_rule(gen, n, phrase) print([next(gen) for n in range(100)])
@Th3F4i1Ur3
@Th3F4i1Ur3 Жыл бұрын
I used a switch statement and a case variable inside the loop that would change based on whether divisible by 3, 5, or both. Then the switch does the output. Easy to add modifications and quite simple to read. Total line count is a bit higher though
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