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https://github.com/matt-gretton-dann/advent-of-code
Multiple years of advent-of-code
https://github.com/matt-gretton-dann/advent-of-code
advent-of-code advent-of-code-2015 advent-of-code-2016 advent-of-code-2017 advent-of-code-2020 advent-of-code-2021 advent-of-code-2022 advent-of-code-2023 aoc aoc2015 aoc2016 aoc2017 aoc2020 aoc2021 aoc2022 aoc2023
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Multiple years of advent-of-code
- Host: GitHub
- URL: https://github.com/matt-gretton-dann/advent-of-code
- Owner: matt-gretton-dann
- License: apache-2.0
- Created: 2021-12-01T20:31:38.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2023-12-20T10:54:56.000Z (about 1 year ago)
- Last Synced: 2024-11-30T07:24:19.267Z (2 months ago)
- Topics: advent-of-code, advent-of-code-2015, advent-of-code-2016, advent-of-code-2017, advent-of-code-2020, advent-of-code-2021, advent-of-code-2022, advent-of-code-2023, aoc, aoc2015, aoc2016, aoc2017, aoc2020, aoc2021, aoc2022, aoc2023
- Language: C++
- Homepage:
- Size: 371 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# C++ Solutions to Advent of Code
This repository contains solutions to various years of
the [Advent of Code](https://adventofcode.com)
puzzles. All solutions are written in C++. The solutions aren't designed to be nice or pretty.
Instead, I am using it as an experiment in understanding how I approach solving problems.
The solutions are authored by Matthew Gretton-Dann, and Copyright 2020-2021, Matthew Gretton-Dann.
Licensed under Apache 2.0 - see [license](./LICENSE).
## Getting the sources
To get the sources clone from git as follows:
```sh
git clone https://github.com/matt-gretton-dann/advent-of-code/
```
## Build requirements
The following is required to build the puzzles:
* CMake
* C++20 compiler
* OpenSSL headers.
## Running the Puzzles
There is a driver script (`./driver.sh`) in the root of the checkout. It will build and run specific
tests. Example use is as follows:
```sh
YEAR=2020 # Year of puzzle to run
DAY=01 # Day of puzzle to run
PUZZLE=01 # ID of puzzle (1 or 2)
INPUT=input1.txt # Input to give the puzzle.
./driver.sh $YEAR $DAY $PUZZLE $INPUT
```
## Building the puzzles
The build system uses CMake.
```sh
cmake -Bbuild -S.
cmake --build build
```
**Note**: Some puzzles require OpenSSL for the MD5 implementation. On macOS this requires you to
pass an appropriate value for `OPENSSL_ROOT_DIR` to `cmake`. If using `homebrew` then x86 this
is `-DOPENSSL_ROOT_DIR=/usr/local/opt/openssl` and on AArch64 this
is `-DOPENSSL_ROOT_DIR=/opt/homebrew/opt/openssl`.
## Sources
All code is written in C++.
### Directory Layout
Each year of puzzles is in a self-contained directory `YEAR`.
Within the directory there are the following files:
* `puzzle-DAY-NUMBER.cc`. The source for puzzle NUMBER on DAY in the year.
* `driver-DAY-NUMBER.sh`. If present this is used as the driver to run that puzzle.
* `puzzle-DAY-NUMBER.CMakeLists.txt`. If present this is included by `CMakeLists.txt`. The
variable `${puzzle_name}`
contains the name of the puzzle target. Some puzzles use this to depend on OpenSSL.
### Command Line Interface
The executable command line interface should just take the input in on standard-input and print its
result on standard-output.
If this is not possible the script `driver-DAY-NUMBER.sh` within the year directory should be
provided. It should take two arguments - the executable to run and the input file to use.