I can't wait to see all of your solutions to P27. This problem has given me such a headache :P

Announcement: there's a bioinformatics programming competition starting today and we can use whatever language(s) we like: stepik.org/course/91751/syllabus

cool!

looks similar to rosalind or something where you just upload the answer, the code doesn't matter

Yup, that's because Rosalind is either sponsoring the comp or outright giving them the problems.

I read the "Rosalind" name somewhere.

ah lol

well I'll definitely give it a go

me too

the prizes are strange, I'm not sure I'd want my genome sequenced, sounds a bit dystopian

If you win, I don't think they will come after you to force you into giving them a sample of your DNA

On the other hand, if you wanted that, what would you do..? Spit into a cup and mail it to them? :P

yeah probably that would be weird

we know you have the DNA, rak1507

what if a robot wins

these challenges would be much easier with scripting and being able to pipe to stdin

Problem 1 is worded in such a stupid way, IMO

where

yea it's a little bit confusing

easy problem though

@Razetime stepik.org/course/91751/syllabus bioinformatics contest

@rak1507 Why, you got something to hide?

Woops, ⎕IO←0 just bit me

@user for legal reasons I decline to comment

It's hilarious that problem 2 looks so similar to the problem discussed here yesterday.

yeah lol

@rak1507 sorry to bother, but can you confirm with me that the sample output of that problem is wrong?

I think the 5th row of the sample output is wrong.

mj​+ak​>0

@rak1507 ahhhh

ty

I did a crap bruteforce solution to pass a few tests but it leaves me 1 mark off qualifying for the next stage lol, obviously deliberate

have to actually do it properly

@rak1507 oh, so bruteforce ain't gonna cut it? :(

nope

Then I guess I'll have to read yours and dzaima's solutions to yesterday's problem.

haha

damn, still not efficient enough for test case 3, despite doing 2 a lot faster

@RGS yeah idk what it even means

funny coincidence

@Razetime they want you to count unique columns

oh

i was (kinda) getting at that

@dzaima does dzaima/APL have file IO

@Razetime you can read lines of a file with ⎕lns'name' and write a string (not an array of lines for whatever reason) with 'name'⎕lns'string'

cool

so I'll have to join with ⎕UCS 10 everywhere i guess

yeah. No clue why there isn't a whole file read quad.

is name relative to program directory or absolute?

relative to the directory where dzaima/APL was invoked (it can of course be absolute too, if you want that)

relative is all i need

yay I passed test #3

my code is disgusting

I just want an apl which i can use with a normal editor without cardiac arresting

one of the lines is 170 chars long

wow

tbf a lot of it is boilerplate to do parsing + stuff

hm there must be some golfing language with file i/o and decent docs

yes! passed test #4 as well

unfortunately not part 5 bc they're all 10k :( need something much better than what I have atm

hm if you passed all those you've already qualified right

yep

I'm gonna try finishing all of them for funsies

rip, I thought I had a nice solution for p3 but it is slow for d=100 and q=100 and the first test case is d=q=5000 lol

haven't even read that yet

it looks more confusing than it is

pen and paper helps

thankfully i have a lot of that nearby due to exams

I was just reading archive.vector.org.uk/art10011550

and in the end it mentions an expression

R←((V⍳V)=⍳⍴V)/V

I have created a vector in tryapl and tried the expression with it but I don't understand what it is doing

unique elements (nowadays you'd use ∪)

what I understand so far is that ⍳⍴V gives me a vector of indices in related to the size of the vector

aaah!

thank you @rak1507

V⍳V is the index of the first occurrence of each thing, ⍳⍴V are the indices, where the two are equal are where the item occurs for the first time

and then / to filter

beautiful

np

yay, I solved question 5, not fast or pretty but it works