Discussion on: Advent of Code 2019 Solution Megathread - Day 8: Space Image Format

View post

Such a big contrast with yesterday and especially friday.

Quick and dirty Python solution:

# Get the input
from input import puzzle_input

# Set the width and height
width = 25
height = 6

# Split the input up in layers
layers = []
layer = ""
for index in range(0,len(puzzle_input) + 1):
    if index % (width * height) == 0:
        if layer:
            layers.append(layer)
        layer = ""

    if index < len(puzzle_input):
        layer += puzzle_input[index]

# Loop through the colors
index = 0
colors = ""
while index < len(layers[0]):
    for layer in layers:
        if layer[index] != "2":
            if layer[index] == "0":
                colors += " "
            else:
                colors += "1"
            break
    index += 1

    if index % width == 0:
        colors += "\n"


print(colors)

RobertCram • Dec 15 '19

Hi Sarah,

this one is driving me crazy. I've got exact the same solution you have, but I don't know how to submit it.

I've tried submitting the solution as a string of "0" and "1", but that doesn't work. Same for a string of spaces and "1".

Is there something I'm not seeing?

Any help would be appreciated :)

Sarah • Dec 15 '19

If you print it like in my example, it should display letters. For example

Would be a C. Just type the letters in as a solution :)

RobertCram • Dec 16 '19

Thanks Sarah. That did the trick. Glad to be past this one. Lots of catching up to do :)

Sarah • Dec 16 '19

Glad I could help :) I’m very far behind as well, have been out sick the past week and a half so didn’t get much done lately. Good thing I have two weeks of vacation coming up.