Jelly Hypertraining

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Erik the Outgolfer

07:26

@cairdcoinheringaahing correct

11 hours later…

DJMcMayhem

18:28

@LeakyNun Do you have a Jelly riddle?

Leaky Nun

@DJMcMayhem yes

> Find the largest list of consecutive numbers that sum to N (e.g. f(100)=[9, 10, 11, 12, 13, 14, 15, 16])

DJMcMayhem

← 3 messages moved from The Nineteenth Byte

@LeakyNun Could you give me a hint for where to start?

Leaky Nun

@DJMcMayhem the search space

DJMcMayhem

Huh?

Hmmm....

totallyhuman

is there a filter atom?

nvm found it

DJMcMayhem

18:35

No, but there is a quick

totallyhuman

yeah

urgh error

DJMcMayhem

Honestly, I have no idea how to do this

totallyhuman

spoiler: anybody can tell me why it errors?

oh wait

Leaky Nun

@DJMcMayhem what is the search space?

@totallyhuman I hope you can figure that out

totallyhuman

;-;

oh i'm an idiot

DJMcMayhem

18:47

@LeakyNun I have no clue

I mean, obviously it'll be smaller than N/2

Leaky Nun

oh, I mean the literal search space

DJMcMayhem

I still am not sure

Leaky Nun

in other words, name a larger family that the list [9,10,11,...,16] belongs to

DJMcMayhem

Lists that sum to 100? List of consecutive integers?

Leaky Nun

the latter.

what if I told you you can generate the latter with one byte?

DJMcMayhem

18:49

RẆ?

totallyhuman

what i don't need to take the range

how does that work

Leaky Nun

@DJMcMayhem right

DJMcMayhem

Oh, just Ẇ

totallyhuman

:o i'm getting closer

DJMcMayhem

OK, so that helps a little, but the list doesn't necessarily start with 1

Leaky Nun

18:50

@DJMcMayhem so?

totallyhuman

ok so i have a list of lists that sum to n

now i need to find the largest of em

max(l,key=len) :P

DJMcMayhem

Wait, why is the depth of Ẇ all messed up?

Leaky Nun

@DJMcMayhem ?

singletons are printed as the element itself

DJMcMayhem

Oh.

totallyhuman

wait a minute

Leaky Nun

18:54

@totallyhuman maybe you can keep that to yourself, since there are others doing the same challenge, thanks

totallyhuman

oh was that supposed to be a spoiler?

sorry

DJMcMayhem

@LeakyNun I finally got it in 11!

Should I post my solution, or is that a spoiler?

totallyhuman

post it as a link saying it's a spoiler

DJMcMayhem

Spoiler

I golfed a byte off too

Can it be done without the helper link?

Leaky Nun

@DJMcMayhem of course

DJMcMayhem

19:01

Hmmm

Leaky Nun

a newline followed by a naked Ç is a nop

often

DJMcMayhem

Oh duh: spoiler Try it online!

OK, next question. I use the same character twice. Can I get rid of that?

Leaky Nun

you're essentially doing filter

DJMcMayhem

Then why doesn't spoiler work?

Leaky Nun

@DJMcMayhem I hope you can figure that out yourself

DJMcMayhem

19:06

I don't think I can, but I'll try

totallyhuman

yesss

spoiler: i got it

8 bytes

Leaky Nun

@totallyhuman congratulations

DJMcMayhem

19:23

@LeakyNun I give up

Mostly because I have a hard time understanding what constitutes a link

I looked at totallyhuman's solution, but I don't entirely understand it

Leaky Nun

alright

DJMcMayhem

So ¥ groups Ẇ and S= into a dyad?

Or wait, would it be ẆS and =?

Leaky Nun

@DJMcMayhem no

still no

would this be more legible?

DJMcMayhem

Yes, much

Woah

Okay, so it groups S and =. But why does that have to be a dyad?

totallyhuman

[i==n for i in sum(combinations(n))]

DJMcMayhem

19:29

But if you call that link monadically, it would pass N as the left and right arguments, right?

totallyhuman

no because you call Ẇ on N

Leaky Nun

the left argument is the list being filtered

totallyhuman

so the left would be the combinations and the right would be N

ninja'd

@totallyhuman nope that's wrong

[sum(i)==n for i in combinations(n)]

Leaky Nun

@DJMcMayhem a monad only has a left argument

DJMcMayhem

19:46

@LeakyNun I meant as the right argument to the = dyad

Leaky Nun

@DJMcMayhem a monad only has one argument

DJMcMayhem

I know

Leaky Nun

if you combine S and = to become a whole monad

then the list would be the right argument to =

because the list is the "right argument" of the monad

DJMcMayhem

Oh I see the issue

It's because the current value is the list, not N

Leaky Nun

yes

DJMcMayhem

19:49

But I still don't get why the original one doesn't work

(Original being this)

Leaky Nun

Because Ðf modifies ⁸

you need =⁸$ instead of =⁸

but then the result would be trivial

because you're filtering on a list of sums...

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