this post was submitted on 21 Dec 2023
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Advent Of Code
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An unofficial home for the advent of code community on programming.dev!
Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
AoC 2023
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console.log('Hello World')
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Nim
My part 2 solution assumes the input has an unimpeded shortest path from the center of each garden section to its corner, and to the center of its neighbor. The possible destinations will form a diamond pattern, with "radius" equal to the number of steps. I broke down the possible section permutations:
Sections that are completely within the interior of the diamond
Sections containing the points of the diamond
Depending on the number of steps, there may be sections adjacent to the point sections, that have two corners outside of the diamond
Edge sections. These will form a zig-zag pattern to cover the diamond boundary.
I determined how many of each of these should be present based on the number of steps, used my code from part 1 to get a destination count for each type, and then added them all up.