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day 9

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This commit is contained in:
Lea 2023-12-10 13:45:56 +01:00
parent e7cbc21a45
commit a08f610e4e
Signed by: Lea
GPG key ID: 1BAFFE8347019C42
6 changed files with 280 additions and 0 deletions
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8
Cargo.lock generated
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@ -84,6 +84,14 @@ dependencies = [
"regex", "regex",
] ]
[[package]]
name = "day_9-1"
version = "0.1.0"
[[package]]
name = "day_9-2"
version = "0.1.0"
[[package]] [[package]]
name = "memchr" name = "memchr"
version = "2.6.4" version = "2.6.4"

200
day_9/input.txt Normal file
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@ -0,0 +1,200 @@
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15 22 50 127 306 692 1486 3056 6053 11595 21551 38989 68939 119809 206136 353922 610671 1063484 1870260 3311259 5871060
24 34 56 108 216 415 750 1277 2064 3192 4756 6866 9648 13245 17818 23547 30632 39294 49776 62344 77288
5 17 30 46 76 142 279 537 983 1703 2804 4416 6694 9820 14005 19491 26553 35501 46682 60482 77328
23 45 79 131 216 375 709 1439 3021 6384 13424 27987 57720 117371 234388 458043 873949 1627234 2961030 5285139 9308620
4 12 28 69 170 394 844 1672 3078 5290 8514 12841 18096 23612 27910 28264 20128 -3600 -53504 -144795 -298706
6 8 20 54 137 327 750 1678 3681 7900 16508 33465 65751 125404 232929 423014 754028 1323524 2292968 3926204 6647785
15 34 74 142 253 445 805 1515 2932 5721 11061 20948 38662 69645 123582 219880 402005 773192 1580388 3400958 7537619
14 18 36 88 200 404 738 1246 1978 2990 4344 6108 8356 11168 14630 18834 23878 29866 36908 45120 54624
7 21 33 38 38 51 132 432 1343 3807 9915 24004 54595 117722 242497 480149 918267 1702557 3069065 5390478 9240728
8 4 0 -4 -8 -12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72
23 34 45 56 67 78 89 100 111 122 133 144 155 166 177 188 199 210 221 232 243
11 24 57 133 289 574 1056 1855 3226 5723 10482 19668 37138 69379 126787 225360 388885 651706 1062167 1686831 2615583
8 18 38 65 105 191 414 983 2353 5493 12414 27166 57701 119382 241623 480297 940194 1813772 3444082 6419595 11703885
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

8
day_9/part_1/Cargo.toml Normal file
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[package]
name = "day_9-1"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]

28
day_9/part_1/src/main.rs Normal file
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fn main() {
let input = include_str!("../../input.txt");
let mut result: i32 = 0;
for line in input.lines() {
let mut lists: Vec<Vec<i32>> = vec![line.split(" ").map(|num| num.parse::<i32>().unwrap()).collect()];
while lists.last().unwrap().iter().filter(|i| i != &&0).count() > 0 {
let current_list = lists.last().unwrap();
let mut new_list: Vec<i32> = vec![];
for i in 1..current_list.len() {
new_list.push(current_list[i] - current_list[i - 1]);
}
lists.push(new_list);
}
lists.last_mut().unwrap().push(0);
for i in (1..lists.len()).rev() {
let new_val = lists[i-1].last().unwrap() + lists[i].last().unwrap();
lists.get_mut(i-1).unwrap().push(new_val);
}
result += lists[0].last().unwrap();
}
println!("Result: {result}");
}

8
day_9/part_2/Cargo.toml Normal file
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[package]
name = "day_9-2"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]

28
day_9/part_2/src/main.rs Normal file
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fn main() {
let input = include_str!("../../input.txt");
let mut result: i32 = 0;
for line in input.lines() {
let mut lists: Vec<Vec<i32>> = vec![line.split(" ").map(|num| num.parse::<i32>().unwrap()).collect()];
while lists.last().unwrap().iter().filter(|i| i != &&0).count() > 0 {
let current_list = lists.last().unwrap();
let mut new_list: Vec<i32> = vec![];
for i in 1..current_list.len() {
new_list.push(current_list[i] - current_list[i - 1]);
}
lists.push(new_list);
}
lists.last_mut().unwrap().insert(0, 0);
for i in (1..lists.len()).rev() {
let new_val = lists[i-1].first().unwrap() - lists[i].first().unwrap();
lists.get_mut(i-1).unwrap().insert(0, new_val);
}
result += lists[0].first().unwrap();
}
println!("Result: {result}");
}