RomanSixty / adventofcode-2022

my take on the "advent of code" challenges 2022

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Advent of Code 2022

http://adventofcode.com/2022

Goals

  • write as little code as possible
  • while maintaining readability
  • try maximizing performance
  • no dependencies, just a PHP8 environment

Usage

Each day's solution resides in a numbered directory containing a text file input.txt as input data and solve.php for processing.

Run using php-cli, e.g.:

php 01/solve.php

To profile execution time and memory usage, use (for day 1 for example):

php profile.php 1

Specials

SVG renderings

For the following days you can generate SVGs (output_1.svg resp. output_2.svg in the day's folder). Just include visualize.php and uncomment the createSVG() calls.

  • Day 8: overall tree map (darker = higher), best tree hilighted in part 2
  • Day 9: trails of tails color coded from red (beginning) to blue (end)
  • Day 12: height map with the found path
  • Day 14: the rock structure and sand piles

About

my take on the "advent of code" challenges 2022

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