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Finished day 12 aoc part 1 with pathfinding library and it work woopwoop

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This commit is contained in:
Philippe Zwietering
2023-01-09 03:19:55 +01:00
parent 45b01ca65c
commit a958e1954b
3 changed files with 148 additions and 10 deletions
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111
advent_of_code/2022/12/Cargo.lock generated
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@@ -8,6 +8,12 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
[[package]]
name = "either"
version = "1.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
[[package]]
name = "fixedbitset"
version = "0.4.2"
@@ -30,12 +36,30 @@ dependencies = [
"hashbrown",
]
[[package]]
name = "integer-sqrt"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "276ec31bcb4a9ee45f58bec6f9ec700ae4cf4f4f8f2fa7e06cb406bd5ffdd770"
dependencies = [
"num-traits",
]
[[package]]
name = "itertools"
version = "0.10.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
dependencies = [
"either",
]
[[package]]
name = "main"
version = "0.1.0"
dependencies = [
"nom",
"petgraph",
"pathfinding",
]
[[package]]
@@ -52,20 +76,95 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
[[package]]
name = "nom"
version = "7.1.1"
version = "7.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a8903e5a29a317527874d0402f867152a3d21c908bb0b933e416c65e301d4c36"
checksum = "e5507769c4919c998e69e49c839d9dc6e693ede4cc4290d6ad8b41d4f09c548c"
dependencies = [
"memchr",
"minimal-lexical",
]
[[package]]
name = "petgraph"
version = "0.6.2"
name = "num-traits"
version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6d5014253a1331579ce62aa67443b4a658c5e7dd03d4bc6d302b94474888143"
checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
dependencies = [
"autocfg",
]
[[package]]
name = "pathfinding"
version = "4.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c66505cf9c582f34ae89f6433c16ccc05f88803a36adff59c812188021edee78"
dependencies = [
"fixedbitset",
"indexmap",
"integer-sqrt",
"itertools",
"num-traits",
"rustc-hash",
"thiserror",
]
[[package]]
name = "proc-macro2"
version = "1.0.49"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
dependencies = [
"unicode-ident",
]
[[package]]
name = "quote"
version = "1.0.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
dependencies = [
"proc-macro2",
]
[[package]]
name = "rustc-hash"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
[[package]]
name = "syn"
version = "1.0.107"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f4064b5b16e03ae50984a5a8ed5d4f8803e6bc1fd170a3cda91a1be4b18e3f5"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "thiserror"
version = "1.0.38"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
dependencies = [
"thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "1.0.38"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "unicode-ident"
version = "1.0.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
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2
advent_of_code/2022/12/Cargo.toml
View File

@@ -7,4 +7,4 @@ edition = "2021"
[dependencies]
nom = "7.1.1"
petgraph = "0.6.2"
pathfinding = "4.2.0"

45
advent_of_code/2022/12/src/main.rs
View File

@@ -1,13 +1,16 @@
use std::collections::HashMap;
use pathfinding::prelude::dijkstra;
fn main() {
let test_input = include_str!("../test.txt")
let test_input = include_str!("../input.txt")
.split_whitespace()
.collect::<Vec<&str>>();
let mut start = (0, 0);
let mut end = (0, 0);
let mut points : HashMap<(u32, u32), u32> = HashMap::new();
// let mut max_y = 0;
// let mut max_x = 0;
let mut points : HashMap<(i32, i32), i32> = HashMap::new();
let mut y = 0;
for line in test_input {
@@ -23,9 +26,45 @@ fn main() {
end = (x, y);
}
points.insert((x, y), c as u32 - 'a' as u32);
points.insert((x, y), c as i32 - 'a' as i32);
// max_x = x;
x += 1;
}
// max_y = y;
y += 1;
}
let r = dijkstra(
&start,
|&(x, y)| vec![((x-1, y), points.get(&(x-1, y)), (x, y)),
((x+1, y), points.get(&(x+1, y)), (x, y)),
((x, y+1), points.get(&(x, y+1)), (x, y)),
((x, y-1), points.get(&(x, y-1)), (x, y)),]
.into_iter()
.filter(|&(_, n, c)| match n {
None => false,
Some(&height) => height <= *points.get(&c).unwrap() + 1,
})
.map(|(coords, _, _)| (coords, 1)),
|&n| n == end);
println!("Number of steps taken: {}", r.expect("No path found").1);
// Testing the parsing
// for y in 0..=max_y {
// for x in 0..=max_x {
// if (x, y) == start {
// print!("S");
// } else if (x, y) == end {
// print!("E")
// } else {
// let c = from_u32((points.get(&(x, y)).unwrap() + 'a' as i32) as u32).unwrap();
// print!("{c}");
// }
// }
// println!();
// }
}