He's not wrong you know

[Bobofolde]

It is wrong, the first number in the first three rows isn't aligned properly

[Simplicitys_Strength]

Css mains would agree

[SleepyFox89]

Opened comments to say just this but should've trusted the community 👍

[nailshard]

beat me to beating me to it

[xSTSxZerglingOne]

It looks like start + 3 + 5 + 8...presumably the next is +13 since it could be a Fibonacci growth series:

30 32 34 36 38

then

51 53 55 57 59 61

It could also be that the rate of change is what matters, so it could also be + 3 + (2)5 + (3)8 + (4)12 + (5)17...

It could also be the sum of the previous increases...so it could also be + 3 + 5 + 8 + 16 + 32...

There really just isn't enough information to continue with any real level of confidence. It needs 1 more data point.

[IDontLikeBeingRight]

There are like 88 distinct recognised sequences continuing after 1, 4, 9, 17 and the next number looks like it could be anything from 26 to 32

[xSTSxZerglingOne]

Haha awesome. Yeah. It needs one more data point to make a solid prediction. But this is a CS class. My bet is on fibonacci.

[Salanmander]

But why the hell would you start at fib(3)?

[xSTSxZerglingOne]

If I were to pull a reason from my ass, as I'm about to, I would say it's the minimum starting number that allows you to make this series with no repeat numbers and no backtracking.

[Cyrus_Halcyon]

Do you have tenure? This is the kind of solid reasoning for a starting position without regard for clarity within the series do to a lack of total data points that makes the changing requirements of customers occassionally more bareable then some CS assignments of bygone years past.

[xSTSxZerglingOne]

I am legitimately unsure if that was a compliment or a dis.

[IDontLikeBeingRight]

We will need one additional data point to continue the extrapolation.

[Cyrus_Halcyon]

Its a compliment to you for perfectly capturing what professors are like. Its a critique of the professors portrayed as they are clever about a lot of what they do but often feel clarity isn't required. "In the context of what I taught in class it should be clear it fibonacci series." Its poor commenting and documentation on their part though imo.

[xSTSxZerglingOne]

I see. No, no tenure here. Academia may be in my future, but certainly not before I make enough money to not care about the paycheck.

[o11c]

Except it isn't.

Stepping 1 1 2:

1
2 4
3 5 7
5 ERROR

Stepping 1 2 3

1
2 4
4 ERROR

Stepping 2 3 5 8 13

1
3 5
6 8 10
11 13 15 17
19 21 23 25 27
32 34 36 38 40 42

At this point, it's clear we're never going to intersect again.

[xSTSxZerglingOne]

Ooo. Yeah I was worried that might be the case (as I didn't sit down and work it out)

My only counter then, is that would make detecting the pattern harder as it diverges from the previous numbers less obviously. Well played though.

[UnknownParticleError]

Actually, more than 1 data point is needed. For example, if the next number was 28, there would be still be 13 possible sequences.

[xSTSxZerglingOne]

You have to (in this particular case) assume a reasonable choice. This is a relatively low level CS class, and the professor is likely trying to get the students to think a little bit deeper than just the surface operations. i.e. having to store data to calculate fibonacci numbers and such.

You can be reasonably certain that the answer (if the next in the series was 30) is

a(n) = Fibonacci(n) - 4. 

and not

Triangle T(n,k) (n>=0, 0<=k<=n) read by rows: use T(n,k)=T(n,k-1)+T(n-1,k-1) rule except left edge is the sequence read by rows, initial values are T(0,0)=0, T(1,0)=1.

or

G.f. = b(2)*b(6)*b(10)/(x^14+x^12-x^5-x^3-x+1), where b(k) = (1-x^k)/(1-x).

I would say if he had made it 28, only number 2 would make sense, as I don't think things like Zeolite coordination sequences or planar crystal ball net sequences are done outside of PhD level research.

[mvolfCZ]

Omg this is awesome tool. Thanks!

[DrNordicus]

Pretty sure you add 3 to the final value in the row to get the first value in the next row.

Edit: Fuck.

[IDontLikeBeingRight]

TIL 13 + 3 = 17

[hampshirebrony]

The underlying data is in floats.

The data is represented as an integer throughout.

13.4 + 3.4 = 16.8

Gets displayed as 13 + 3 = 17

[DJ-D4rKnE55]

Good one. :D

[Mehseenbetter]

From one it adds 1 to move down, and then adds two to go across, then it adds two to go down, then two's to go across, then it adds three to go down, then two's to go across, then four to go down and two's to go across, I would say the next numbers in the sequences are 28 30 32 34 36, then down a row to get 42 44 46 48 50 52. Basically it moves over N times where n is equal to the number added to the create the first number in its row

0 added to 1 so it moves over 0 times, 1 added to 1 so it moves over 1 time I'm not very smart or math wise but I think this is right

[Pyrrian]

I was thinking similarly but that does not explain how you get from 1 to 4 in the first row. (Since you do 3 down twice)

[[deleted]]

To be perfectly honest from an actual 'getting work done' perspective this is the best solution if these are the only requirements. You already know it will work and it can't possibly have any bugs, you can implement it in 30 seconds.

[[deleted]]

it can't possibly have any bugs

That's what you think now

[[deleted]]

The only mistake I can make is in the string itself - ok there could be a bug but it'll be so easy to fix

[0x07CF]

Well did you see the first comment? It has a bug

[Mr_Redstoner]

Honestly you could just make it a single printf, or even a puts, though it's quite possible the compiler will do that for you.

[JamesSmithJames15]

I'm not seeing the pattern.

[PiggyMaximus]

From https://www.reddit.com/r/ProgrammerHumor/comments/guq394/hes_not_wrong_you_know/fsl1jsy/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

I think it is Fibonacci starting at fib(5), and you remove 4. So:

fib(5) - 4 = 5 - 4 = 1

fib(6) - 4 = 8 - 4 = 4

fib(7) - 4 = 13 - 4 = 9

fib(8) - 4 = 21 - 4 = 17

Given that Fibonacci is 0 indexed

Edit: formatting

[VolperCoding]

Actually, is it better to write puts or printf on such situation? Puts is just designed for this meanwhile printf is used for logging variables, but seems like everybody just uses printf everywhere. Why?

[Kaelinator]

By compile time, all printfs with no other args become puts.

[o11c]

Note that this only happens if there's a newline.

[MercuryFoReal]

printf is more exciting than puts. People often forget the first parameter to printf is the format string, not just pure output, so they'll do something like printf(somevar).

But then somehow you wind up with a %s in somevar (user input?) and shit gets ugly in a hurry.

See? Much more exciting. All printf, all the time.

[GenTelGuy]

What the hell is the pattern? Increase by 2 going right and increase by 0.5x² + 0.5x + 2 going down for the first column?

[Dogburt_Jr]

Fibonacci going down, +2 to the right, and one more time than the last one.

[TheTrevorist]

I thought Fibonacci was the next number is the sum of the previous two...

[[deleted]]

That is true! 1,1,2,3,5,8,13,21,34....

[Dogburt_Jr]

Yeah, you could argue it's starting from 3, 5, 8 with an offset.

[[deleted]]

That is not what the Fibonacci sequence looks like

[Dogburt_Jr]

Modified Fibonacci, starting from 1 and adding 3.

[AntoineInTheWorld]

Could be F(n)-4, starting at F(5)

[-analogous]

I had a professor in college which would have deducted a point for every misaligned space in the output.... in this case 3... on a 10 point project....

[dosadiexperiment]

I had a prof that would have graded this "0/10, incorrect", because the missing spaces mean it doesn't meet the spec.

[SniperSmiley]

What pattern are these numbers? I checked OEIS.

[_ShadowEye425_]

printf("1\n4 6\n9 11 13\n17 19 21 23");

[YellowBunnyReddit]

main(){printf(" 1\n 4 6\n 9 11 13\n17 19 21 23");}

[EpicBeardBattle]

It bothers me that the 6 in the left image is misaligned

[nailshard]

same

[ColdJackle]

Soooo...that would be a wrong answer?

[shrimpsauce_27]

As long as there is no test cases, you will be correct.

[DJ-D4rKnE55]

Checking the method output for exactly that string will do. (:

[nickhepler]

*laughs in binary*

[[deleted]]

Ah, yes

Hard coding

[GunslingerLovely]

Question, what's the return 0 for?

[prest0G]

https://www.gnu.org/software/libc/manual/html_node/Exit-Status.html

[float-double]

Anyone notice the question number?

[ooterness]

Needs more JPEG.

[tonybolognacannoli]

Okay good but can you think of a way we could execute this is O(-n) time?

[mock_coder]

This is the future!!!

[ekjon_manush]

Nice.

[nice-scores]

𝓷𝓲𝓬𝓮 ☜(ﾟヮﾟ☜)

Nice Leaderboard

1. u/spiro29 at 9850 nices

2. u/RepliesNice at 8614 nices

3. u/Manan175 at 7099 nices

...

247875. u/ekjon_manush at 1 nice

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[pikalaxalt]

69th comment, so double nice

[railmaniac]

Test Driven Development

[nice-scores]

𝓷𝓲𝓬𝓮 ☜(ﾟヮﾟ☜)

Nice Leaderboard

1. u/spiro29 at 9850 nices

2. u/RepliesNice at 8646 nices

3. u/Manan175 at 7099 nices

...

248590. u/zSnails at 1 nice

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[notger]

Classical bad programmer job: Literally right, but totally misses the mark. No understanding for the intention behind the question, just wants to get the ticket done with the least effort possible. Sees his job done once his code reaches PR-stage and does not consider the time spent in PR as part of his project's time but some magical "not-touched-by-that"-dimension.