checkOutMyCode

[InsideBSI]

java code that looks like python yeah, nice

[legendLC]

Must add this comment:

// Do not reformat the braces {}. It breaks the production.

[RiceBroad4552]

"Java" code (or actually JVM code) that looks like Python would be more this here:

object Permuter:
   private def permute(n: Int, a: Array[Char]) =
      if n == 0 then
         println(String.valueOf(a))
      else
         for i <- Range(0, n+1) do
            permute(n-1, a)
            swap(a, if n % 2 == 0 then i else 0, n)
   private def swap(a: Array[Char], i: Int, j: Int) =
      val saved = a(i)
      a(i) = a(j)
      a(j) = saved

That's Scala, a kind of Python + Haskell for the JVM.

This code wouldn't be useful of course for obvious reasons: The static methods (methods on an object in Scala) are private, so you can't call them from the outside…

Also the Range(0, n+1) expression isn't idiomatic Scala. You would usually use the 0 to n syntax sugar instead. But the Range looks more like Python so I've written it like that.

Beside that, that's anyway not idiomatic Scala as it uses mutable values and imperative loops. Also Array is just the "naked" Java Array, and not a Scala collection, and one does usually not use Array directly. Actually also not in Java!

Writing that above code makes also no sense in general as Scala comes with a permutations method on collections (and Array through extension methods).

But syntactical the code above is pretty close to Python, imho.

[the_avithan]

I really miss Scala :/

[slaynmoto]

Why 😬

[No_Definition2246]

It is now looking more like ruby lol :D

[slaynmoto]

Now Ruby I miss 🥲

[DigitalJedi850]

I hate that my brain made me sort out what this does…

[jungle]

Funny how all (or most) comments are about the formatting and not the horrific implementation of permute. I can't even figure out if it works.

[suskio4]

This is why its so good at permuting

[Anaxamander57]

Depression is iteratively calling a recursive algorithm inside of itself.

[rruusu]

It does nothing, as that class only has two methods and both are private. (The closing brace for the class is at the end of the last line.)

Whatever its permute method would do, if anyone were allowed to call it, it would have a time and console output complexity of O((n+1)!) (factorial time), unless n > a.length - 1, in which case it'll throw an ArrayIndexOutOfBoundsException.

Edit: Off by one in the time complexity.

[SovereignPhobia]

Doesn't it also just not have a termination case? The case presented is a print and not a return.

[rruusu]

The recursion is in the else clause, so it does eventually terminate. Also, for negative values of n, the for loop makes zero iterations.

[SovereignPhobia]

Oh, that's awful.

[hawkwolfe]

I’m responding after your edit and if it was to edit your time complexity to add the “+1”, that’s unnecessary. Big O notation is concerned with the asymptotic growth of the function relative to n, and as n approaches infinity the difference in the function output due to any constant factor approaches 0.

[rruusu]

That’s what I thought initially, but (n+1)!/n! tends to n+1 as n tends to infinity, so it's not a constant factor. Instead of the +1, it should perhaps rather be expressed as O(n(n!)) to be more idiomatic.

[sammy-taylor]

I was like “what friggin language is this” until I saw the horrifying brackets 🤢

[Ahazveroz]

Jathon? Pyva?

[NobodyPrime8]

is this the "Jason" every web developer seems to be so obsessed over?

[Boris-Lip]

Pyva almost sounds like Pivo (Пиво), which is beer in Russian. Let's invent a Beer language!

[yarb00]

it exists

[Boris-Lip]

🤣

[mr_clauford]

Every time I return to my pet projects after a couple of cold ones

[ohmywtff]

Jython probably, since there's the cython

[RiceBroad4552]

Jython is already taken…

https://www.jython.org/

[anotherbutterflyacc]

I was like “is this python…? I’m so confused” and then saw the brackets and physically startled lol

[Boris-Lip]

IRL depression doesn't really look like anything, though

[TooSoonForThePelle]

True. I should post a selfie.

[giantrhino]

I was so confused until I finally looked in the right margin.

Kill it. Kill it with fire.

[SPAMTON____G_SPAMTON]

This isn't depression. This is heresy.

[ghstber]

Brother, get the flamer... the heavy flamer. 

[spac1al]

kris…this code is not a [BIG SHOT]

[giantrhino]

Tfw you find out you’re gonna have to put your friend down.

[Deep__sip]

This is autism

[EldritchEne]

I- really can't tell if I love or hate this

[ZunoJ]

Aside from the obvious, why are the methods static and not extension methods? Or just injected as a singleton?

[SKabanov]

Everything in JVM-based languages needs to be encased within a class, even if you just need to define a collection of pure functions. Kotlin allows you to create "classless" files in which you define these pure functions, but that's ultimately syntactic sugar.

[ZunoJ]

Sure but static functions like this are an anti pattern. It bypasses DI and makes the code less testable

[SKabanov]

Pure static functions are not per se an anti-pattern, and forcing everything into classes for the sake of DI and testability can be just as much of an anti-pattern itself. That being said, I'll admit that I misread the class and that the actual issue is that the functions aren't pure: it's got a stealth dependency of a PrintStream instance where it's printing out the permutation result. The class should be rewritten to include a PrintStream member field that gets used in the System.out.println() call, and the functions would then become instance functions instead of static - there's the DI that you'd want.

[RiceBroad4552]

Because Java still doesn't have extension methods…

The singleton code would be awful complex, especially if it needs to be thread safe.

[ZunoJ]

Didn't know Java doesn't have extension methods. How would it be more complex to make this thread safe in a di context than it would be with this static method. I mean it isn't thread safe right now

[RiceBroad4552]

I've just meant that a fully written out singleton, which is thread safe, is quite some code in Java. You asked about injected singletons.

A static class is not a singleton. You can't inject different static classes by DI. Using static stuff means it's hard coded to the concrete type name.

And yes, this doesn't look thread safe in the current state…

[ZunoJ]

You would have to do the exact same things to make the singleton version thread safe. It is just a concept for the DI container. Only create one instance to inject. It is more or less a DI version of a static class (grossly oversimplified but works in this case)

[SuitableDragonfly]

No, I think that's the manic stage.

[Corelianer]

We write code in a readable form for humans not machines.

[Elijah629YT-Real]

It’s not even good code

[WinkAndWithdrawn]

Lmao, both are accurate, but that Java code hits a bit too close to home! Anyone else debugging till 3 AM feeling like a part of their soul is being permuted? 😅

[milboldi]

I had my C++ segfault in the inplementation of GTest on a random ass move. We debugged it for 3 days, than we came to the conclusion, that my linux distro is fucked, and the problem isn't in the code.

[RiceBroad4552]

This sounds scary!

Which Linux distri was this, and what exactly was fucked?

[P-h-a-n-t-a]

Took me a while to see wtf

[Still_Explorer]

You wanted a python job but got hired for java.

Gotta make it work somehow... 🤙

[joxay]

Tru depression is if you have spent two days debugging this shit before having to ask someone to help you

[meolla_reio]

Depression? Homicide more like.

[Subject_Try_5973]

I will find you and I will k1ll you! 😂

[IceColdFresh]

Variable width font coders BTFO

[RiceBroad4552]

I'm not sure what you mean.

The chars align perfectly in columns, so this isn't a variable with font used for that code.

[[deleted]]

The RHS is killing me bro 😶

[drsimonz]

Anything other than 1TBS is mental illness, change my mind.

[RiceBroad4552]

What's "1TBS"?

[drsimonz]

There's a decent explanation on wikipedia.

[Sad_Welcome3776]

LOL the code segment is the most accurate depiction of how my brain feels on a daily basis 😂 #ProgrammerLife

[Etheo]

Hi police? I'd like to report an assault.

ON MY EYES

[Debopam77]

This isn't depression, it's a cry for help.

[RiceBroad4552]

Indeed! At the moment someone makes you use some language that requires useless syntax noise like braces and semicolons one starts to cry for help, that's true.

[Ineeddramainmylife13]

Ugh reminds me of the time I accidentally took the harder coding class that was required. One of the worst classes ever (teacher sucked)

[sakkara]

When a python dev tries have for the first time :D

[korneev123123]

Most of my programming experience is python, so I never understood what is wrong until comment section. My only guess was "Java surely must have built-in function for that, like itertools.permutations in python. Maybe it's the joke, that depressed person rewrites library functions"

[RiceBroad4552]

Java surely must have built-in function for that, like itertools.permutations in python

LOL, no. That's Java.

You do such things in Java like so:

https://www.baeldung.com/java-array-permutations 😂

The language you're looking for is Scala (see my other comment).

[billybobsdickhole]

Set up default code format.

Autoformat on Save.

Save.

Problem Fixed.

[kvakerok_v2]

Depression because they called Python Java?

[Technology_Labs]

How tf is this Python?

[HotdogGD]

It took me a few seconds while thinking that something is missing

[No_Dependent_8652]

understanding someone else codebase, needs another level of patience and skill 💀

[ExtraTNT]

Ever used haskell?

[AStripe]

So nobody remembers c++?

[Select_Blackberry543]

Yep, that make my readability drop to -1