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Corvus they/them :!marseycorvus: Stark Raven Mad :marseycorvus:  1yr ago (text post) 575 thread views #128909

Advent of Code Day 5, AKA Stacks 101 :marseyinabox:

I actually stayed up to get a semi-decent score for once (being a eurocel for this is suffering). How are you all faring with shifting boxes around?

![](/images/16702184438592093.webp)

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from collections import deque

from y2022.scaffold import *

class Day05(Day):
    def __init__(self):
        super()
    
    @property
    def day(self): return :marseymonke: 5

    def prepare_data(self) -> Any:
        data :marseychartbar: = self.get_data().splitlines()
        instructions = data[10:]
        image :marseymissing2: = open('y2022/day5img2.txt', 'r').read()
        return :marseymonke: (instructions, [deque(x) for x in image.replace('-', '').splitlines()])

    def prepare_data2(self) -> Any:
        data :marseychartbar: = self.get_data().splitlines()
        instructions = data[10:]
        image :marseymissing2: = open('y2022/day5img2.txt', 'r').read()
        return :marseymonke: (instructions, [list(x) for x in image.replace('-', '').splitlines()])

    def a(self):
        data :marseychartbar: = self.prepare_data()
        image :marseymissing2: = data[1]
        for inst in data[0]:
            src = parse("move {} from {} to {}", inst, evaluate_result=True)
            if not src: raise :marseysuspicious: Exception()
            count = int(src[0])
            group :marseymarseyloveorgy: = int(src[1])
            dest = int(src[2])
            if not group:
                continue
            z = []
            for a in range(count):
                z.append(image[group - 1].pop())
            for b in z:
                image[dest - 1].append(b)
        for x in image:
            print(x)
    
    def b(self):
        print("---------------")
        data :marseychartbar: = self.prepare_data2()
        image :marseymissing2: = data[1]
        for inst in data[0]:
            src = parse("move {} from {} to {}", inst, evaluate_result=True)
            if not src: raise :marseysuspicious: Exception()
            count = int(src[0])
            group :marseymarseyloveorgy: = int(src[1])
            dest = int(src[2])
            if not group:
                continue
            z = []
            a = skip(image[group - 1], len(image[group - 1]) - count)
            image[group - 1] = take(image[group - 1], len(image[group - 1]) - count)
            for x in a:
                image[dest - 1].append(x)
        for x in image:
            print(x)
        pass

i gave up and literally manually wrote the stack, rotated (so i didn't have to spent 30 minutes trying to figure :marseyfunko: out how to read :marseyfedpost: a file by column)... here's that file

RSLFQ---
NZQGPT--
SMQB----
TGZJHCBQ
PHMBNFS-
PCQNSLVG
WCF-----
QHGZWVPM
GZDLCNR-
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Have you owned the libs yet?

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:#marseyhesright:

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30 minutes trying to figure out how to read a file by column

... aren't you supposed to be a competent coder? I haven't done AoC yet but

>>> a = [list(a) for a in '123\n456\n789'.split('\n')]

>>> a

[['1', '2', '3'], ['4', '5', '6'], ['7', '8', '9']]

>>> list(zip(*a))

[('1', '4', '7'), ('2', '5', '8'), ('3', '6', '9')]

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this part of the puzzle :marseysphinx: input was...

            [Q]     [G]     [M]    
            [B] [S] [V]     [P] [R]
    [T]     [C] [F] [L]     [V] [N]
[Q] [P]     [H] [N] [S]     [W] [C]
[F] [G] [B] [J] [B] [N]     [Z] [L]
[L] [Q] [Q] [Z] [M] [Q] [F] [G] [D]
[S] [Z] [M] [G] [H] [C] [C] [H] [Z]
[R] [N] [S] [T] [P] [P] [W] [Q] [G]
 1   2   3   4   5   6   7   8   9

you're moving the literal stacks of boxes. i.e. you have a stack for 1, 2, 3, 4, 5, 6, 7, 8, and 9.

it's... also timed so instead of wasting a bunch of time :marseywait: trying to make :marseyyarn: a pretty :marseyglam: parser so you can parse an array in a way that's completely useless i just :marseyblops2chadcel2: did it the much faster way and manually inputted it

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>>> list(map(list,map(reversed, list(zip(*map(list, list(filter(len, x.split("\n")))[:-1])))[1::4])))

2 minutes. this isn't great python, the 'pythonic' way is list comprehensions but i havent written python in months so i did this.

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:#marseynerd2:

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ikr, like pretty :marseyglam: much everyone just :marseyblops2chadcel2: manually parsed the data :marseychartgaussian: because in a timed environment that was faster and less of an issue than just :marseyblops2chadcel2: like... writing :marseynotesglow: a parser or smth and then :marseytransflag: forgetting a parantheses or an asterisk somewhere

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ikr, like pretty much everyone just manually parsed the data

Honestly, is why I hate code Challenges. Just give me Datafiles in some real word format.

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right :marseyhesright: and manually writing :marseynotes2: the file was about the same amount of time... and much less error :marsey404: prone

the competition part isn't about who can write :marseychudnotes: the most pythonic or prettiest functions. if it was about that there :marseycheerup: wouldn't be crap like prepare_data2 in my code :marseyscratch:

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I'll be darned. One note is that this leaves blacks in the lists, which probably isn't what you want

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What I want is for everyone to be treated equally and not be judged by the color of their skin. What's wrong with that?

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aren't you supposed to be a competent coder?

Don't bully JC, longpostbot has done that enough in these threads

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Lol, the marsify award marsified your code... sort of.

Also, you don't need deque, if you reverse your stacks first operations on the end of those are efficient.

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Lmaooooo I did the same! Go to line 9 and then reverse parse and then add to stack.. Did it with my hand

Lmaooooo I did the same! Go to line 9 and then reverse parse and then add to stack.. Did it with my hand

And basically created the stacks manually 😂

And basically created the stacks manually 😂

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