Advent of Code 2019

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Practice (2018 Day 1)

Day 1: The Tyranny of the Rocket Equation

Day 2: 1202 Program Alarm

Day 3: Crossed Wires

Day 4: Secure Container

Day 5: Sunny with a Chance of Asteroids

Day 6: Universal Orbit Map

Day 7: (Coming soon!)

Day 8: Space Image Format

Day 9: Sensor Boost

Day 10: (Coming soon!)

Day 11: (Coming soon!)

Day 12: (Coming soon!)

Day 13: Care Package

Day 8: Space Image Format

Part A

I just solve this part naively by splitting the input into layers and counting occurances of each value per layer.

Run

Part B

Rendering the image is done using a fold over the input pixels, updating the final grid of pixels as we go.

Run