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Author SHA1 Message Date
Tristan Daniël Maat 7b7e983e9a
Complete day 12.2 2020-12-12 20:40:23 +00:00
Tristan Daniël Maat c0a6391e85
Complete day 12.1 2020-12-12 20:40:20 +00:00
Tristan Daniël Maat 0355eeccb4
Add global ignore for target/ directories 
This is just the rust compilation directory, I kept locally ignoring
it in sub-projects...
 2020-12-12 20:40:17 +00:00
4 changed files with 0 additions and 361 deletions
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78
day-11/Cargo.lock generated
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@ -1,78 +0,0 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
[[package]]
name = "day-11"
version = "0.1.0"
dependencies = [
"indoc",
]
[[package]]
name = "indoc"
version = "0.3.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
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"indoc-impl",
"proc-macro-hack",
]
[[package]]
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dependencies = [
"proc-macro-hack",
"proc-macro2",
"quote",
"syn",
"unindent",
]
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[[package]]
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dependencies = [
"unicode-xid",
]
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
dependencies = [
"proc-macro2",
]
[[package]]
name = "syn"
version = "1.0.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9a2af957a63d6bd42255c359c93d9bfdb97076bd3b820897ce55ffbfbf107f44"
dependencies = [
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[[package]]
name = "unindent"
version = "0.1.7"
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checksum = "f14ee04d9415b52b3aeab06258a3f07093182b88ba0f9b8d203f211a7a7d41c7"

10
day-11/Cargo.toml
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@ -1,10 +0,0 @@
[package]
name = "day-11"
version = "0.1.0"
authors = ["Tristan Daniël Maat <tm@tlater.net>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
indoc = "0.3"

93
day-11/input
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LLLLLLLLLLLLLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLLLL.LL.LLLLLLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLL.LLLLL.L.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
..L...L.L..L.LL.....L.L..L...L.L.....L.L...LLL..L....L.L.LL.LL...L.....LLL.....L...L..L..L.......
LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
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LLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLL.LLLLLLLL
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..L.L.LL.L..LL..L..LL.L..L................L....L............L.L..L...L...L..LLLL....L.L..LL....L.
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LLLLLLLLLL.LLLL.LLLL.L.LLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLL
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LLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLL
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LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLL.L.LLLLLLLLLLLLL
.LLLLLLLLLLLLLL.LLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLL.L.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
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LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLL.LLLLLLL.LLL.LLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLL
..L....LL..LL.LLLL......L..L...LLL.L......L.L.....L....L....LLLL.....L..LL...L....L....LLL....LL.
LLLLLLLLLLLLLLL.LLLL.LLLLL.LLLLLLLL..LLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLLLLLLL.LLLL.LLLLLLLL.LLLL..LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLL.LLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLL..LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLL.LL
LLLLLLLLLLLLLLL.LLL..LLLLLLLL.LL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLL.LLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLLLLL
...LL.LL.....LL..LLL.....LL....LL....L.LL.L.LL....L........LLLL..LLLLLL.L..L..LLL......L....L....
LLL.LLLLLLLLLLLLLLLL.LLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LL.LLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLL
.....L.L..LL..LL..L.L.L.....LLLLL.....L..L...L.....L.L..L..L....LL....L...........L.L.......L.LLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLLLLL
LLL.LLLLLL.LLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLL..LLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLLLLL.LLLLLLL.L.LLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL
LLLL.L.LLL.LLLL.LLLL.LLLLLLLLLLLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLL.LL.L.LLLLLLLL
L.LLL.................LLL....L...LL..........L.L.L.......L.....L.....LLLLLL......L.......L...L.LL
LLLLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLL.LL.LLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL
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LLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLL.LLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLLLLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLLLLLLL.LLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLL.LLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLLLLLLL.LLL..LLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLLLLLLL
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LLLLLLLLLL.LLLL.LLL..LLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL
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LLLLLLLLLL.LLLLLLLLL.LLL.LLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLL.LLLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLL.LL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLL.LLLLL.LLLLL.LLLL.LLLLLLLL
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LLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLL
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LLLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
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LLLLLLLLLLLLLLL.LLLLLL.LLLLLL.LLLLL.LLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLLLLLLL.LLLLLLLLLLLL.LLLLLL.L.LLLLLL.LLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLL..LLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLLLLLLLL.LL.LLLLL.LLLLLLLLLLLLL.LLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLL

180
day-11/src/main.rs
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@ -1,180 +0,0 @@
use std::fs;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let input = fs::read_to_string("input")?;
let layout = parse_layout(&input)?;
// Part 1
let result = count_eventually_occupied_seats(&layout);
println!("{}", result);
Ok(())
}
#[derive(Copy, Clone, Debug, PartialEq)]
enum Seating {
Occupied,
Empty,
Floor,
}
impl Seating {
fn new(symbol: char) -> Result<Self, String> {
match symbol {
'#' => Ok(Seating::Occupied),
'L' => Ok(Seating::Empty),
'.' => Ok(Seating::Floor),
rubbish => Err(format!("Found some rubbish on the floor, area must be clean to conserve human behavior: {}", rubbish))
}
}
}
fn parse_layout(input: &str) -> Result<Vec<Vec<Seating>>, String> {
input
.lines()
.map(|line| line.chars().map(Seating::new).collect())
.collect()
}
fn print_layout(layout: &Vec<Vec<Seating>>) {
let output: String = layout
.iter()
.map(|row| {
let mut row: String = row
.iter()
.map(|c| match c {
Seating::Occupied => '#',
Seating::Empty => 'L',
Seating::Floor => '.',
})
.collect();
row.push('\n');
row
})
.collect();
println!("{}", output);
}
fn get_adjacent(layout: &Vec<Vec<Seating>>, i: usize, j: usize) -> Vec<Option<&Seating>> {
let adjacent: [[usize; 2]; 8] = [
[0, 0],
[0, 1],
[0, 2],
[1, 0],
[1, 2],
[2, 0],
[2, 1],
[2, 2],
];
adjacent
.iter()
.map(|[nudge_row, nudge_col]| {
if let Some(row) = (i + nudge_row).checked_sub(1) {
if let Some(row) = layout.get(row) {
if let Some(col) = (j + nudge_col).checked_sub(1) {
row.get(col)
} else {
None
}
} else {
None
}
} else {
None
}
})
.collect()
}
fn simulate_people(layout: &Vec<Vec<Seating>>) -> (Vec<Vec<Seating>>, usize) {
let mut changes = 0;
let layout = layout
.iter()
.enumerate()
.map(|(i, row)| {
row.iter()
.enumerate()
.map(|(j, seat)| match seat {
Seating::Occupied => {
if get_adjacent(layout, i, j)
.iter()
.filter(|seat| **seat == Some(&Seating::Occupied))
.count()
>= 4
{
changes += 1;
Seating::Empty
} else {
Seating::Occupied
}
}
Seating::Empty => {
if get_adjacent(layout, i, j)
.iter()
.any(|seat| *seat == Some(&Seating::Occupied))
{
Seating::Empty
} else {
changes += 1;
Seating::Occupied
}
}
Seating::Floor => Seating::Floor,
})
.collect()
})
.collect();
(layout, changes)
}
fn count_eventually_occupied_seats(layout: &Vec<Vec<Seating>>) -> usize {
let mut loop_layout = layout.clone();
loop {
let (res, changes) = simulate_people(&loop_layout);
loop_layout = res;
if changes == 0 {
break;
}
}
loop_layout
.iter()
.flatten()
.filter(|seat| **seat == Seating::Occupied)
.count()
}
#[cfg(test)]
mod tests {
use super::*;
use indoc::indoc;
#[test]
fn test_simple() -> Result<(), Box<dyn std::error::Error>> {
let input = indoc!(
"L.LL.LL.LL
LLLLLLL.LL
L.L.L..L..
LLLL.LL.LL
L.LL.LL.LL
L.LLLLL.LL
..L.L.....
LLLLLLLLLL
L.LLLLLL.L
L.LLLLL.LL
"
);
let layout = parse_layout(&input)?;
let result = count_eventually_occupied_seats(&layout);
assert_eq!(result, 37);
Ok(())
}
}