Everything about iterators

Day 8 (Advent of Code 2022)

In the day 8 problem, our input is a height map:


This is a 5x5 grid, and every number denotes the height of a tree. For part 1, we must find out how many trees are visible from the outside of the grid.

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Day 1 (Advent of Code 2022)

Two years ago, I did part of Advent of Code 2020 using the Rust language. It was a lot of fun, so let's try it again!

The problem statement

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