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path: root/2023/rust/day3
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context:
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Diffstat (limited to '2023/rust/day3')
-rw-r--r--2023/rust/day3/Cargo.toml8
-rw-r--r--2023/rust/day3/example.txt10
-rw-r--r--2023/rust/day3/input.txt140
-rw-r--r--2023/rust/day3/src/lib.rs184
4 files changed, 342 insertions, 0 deletions
diff --git a/2023/rust/day3/Cargo.toml b/2023/rust/day3/Cargo.toml
new file mode 100644
index 0000000..898e70d
--- /dev/null
+++ b/2023/rust/day3/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "day3"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2023/rust/day3/example.txt b/2023/rust/day3/example.txt
new file mode 100644
index 0000000..b20187f
--- /dev/null
+++ b/2023/rust/day3/example.txt
@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..
diff --git a/2023/rust/day3/input.txt b/2023/rust/day3/input.txt
new file mode 100644
index 0000000..898bc27
--- /dev/null
+++ b/2023/rust/day3/input.txt
@@ -0,0 +1,140 @@
+............409..........784...578...802......64..............................486.248..............177....................369...............
+.....-939..........524#...#....=.......*.........+......90.................................76..615..-..@.....961..........$.......*.........
+............951*........................736...955..258....*.....253@.............210.10.....=...*.......776...*....&...............600..274.
+152.78..........671.....936.......................*..........14...............................575.=.........214..519.....787.739........*...
+...*....591......................514*155..........807...............516.............23...5#.......250.531...................*......-..71....
+.............................................254..........69&........*..............*....................*...............*........785.......
+....5....../.42..908*166..242*825.....................19%............148..822......127..+...+...........971...........206.540.753...........
+........111.........................%...............$..........635..........*..........222.286..823..........%................&...=630......
+..821&.......815.............424$...303.322.311..156...........*....786.....91..620............*....319......406......187..............&865.
+........................&975...............*.........649.40..417.......+.........../............39....................*...........%.........
+...300............546...........................640...=...................................319............246....883.253...690...526......435
+.................*......#..............571..121*.........542..938.13...532*....726....795.........%........*.............*...........683*...
+......173.568.624....190................*..........*542....................464..*..................519.144..652.65......926.................
+.......=....*..............................-...@................................592..658..78*537..........#...................303.200*......
+..780.....716.......858..527.775.....587.314...374.......375....777.166.............................................677*394.....*.....512...
+....&..............*...........-......*......*.....900...*.../../............287..255.......431...........104..440..........803..844........
+...............%....875.............920...615.556......488.308....888........@.......$..522*..........511.*............/.....&..............
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+......................*......151........293.+.....*...454................63.............39........831+.........%......./...$................
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+....*.........*..-.....&.........................701.....-.........*...429....................%...$.........*..895..................../.....
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+.........*...............615.801.837......*......661.181...707......613...-.......495......959..........*....#...........*....$.............
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+....549......137..........288@...759.$......961....#..........................788.....846......920................../.......774.............
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+...530#.396&.............670.*.....+.......*.....503*689....486#.558....522........................=..........629..%........................
+..................96*........320..........972...............................$..776.....................755...*...................265*53..265
+....48............................736...........*..........771..85..360..705......*501..793..................685........................*...
+.....*...@705.233....648#..........+.........780.....13...=......*....*.........................*..................898%....282........478...
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+.........*............728......847...#................+.......*......267.....634.................=......979...........14...............364..
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+......-..................863..*......805.9.......107..............*........151.....*........*234...422....995....*.....*................866.
+....670...........544.....*....311.......*....$.$............................-..943.......*........*......=.......167...695.................
+..................../......508..........278..78.........459+...........................922.201....513.518....985............476%............
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+.............627..912......49.........289.....910...737.....*........645.....977..159.....707..104.644............-...872..........&....453.
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+...%..231.......187......8.....*569.138..................963.........184.........899........571...836..........*...*..........*.........349.
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+.....568..902........178.............313..*.........*...............706.....19....724....338..........880*......701........996......84.701..
+....................................*.....253..535.893........+.............=..............*..............520...............&......-........
+..............&..747............877..990................./.....45.........................604....&...................152......275.....%931..
+......515....26....=..128........*..........%.....753...374...........522*835.........838.....344...222..........602....+....*..............
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+...70.................932..83.787..*..$..........$.....218..787............................7..287...............*.......*....+..............
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+.................736.............*.........*.....968..........685..949.755............*.....37..*.............=....................*..53....
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+.307............564..........353............442...153.*.......................516..5.......414................131.......................*...
+...........765.........259.......148...632..................722..348&..115.........-.............195.$186.729.......19*................602..
+...69.249....$......+.*......452..*.........288.........975....&......../.....865.................*.........*...744....423........756*......
+...*...=..........882..801..../..455..........=............-.........16........*..957..841......912..581....887..-...........745......464...
+....62.................................734......544..........898.....*.......548..=....*.............+.............516..632....*............
+...............$..............977%......&...512*..............*.......473...............985.678..128.............+...*.....+..330...........
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+...*.........................501.6@..307....174*722..........*........................*281.663..............101.............................
+.997..53.......-.......................*....................67.324%.117........=...227......................./.............385.......198..26
+.......@..634.669...............743.....869..........233...............*......948..........................#....817.......&...........*.....
+.........%.........280..+.........-.66.............%...+......393.999..745..$.......$........472..940.......70.....*........$......+..615...
+....................@..718..%464....*...........797..........*...............134.....38..560*........*..............388......307...49.......
+..113.......274.800..............992.......373#......791.....775.873.................................227..849=.357..........................
+....*..........*........75..........................*....775........*..179......................................*......77.........=293..987.
+...501..............766*...............26*805......692......*.....917....#.........................+.....483.413..........810...........*...
+.......358.160..............555...798......................684.....................676..........229......*........+..815.................657
+..........*....432.........-......*..............................550....795...816...$.................758........193....-.......222%.666....
+......139...$.....#.894..........226.....826..........*248..850$..........#..*....@...........895*..8.....340.+...........922.........=.....
+..892*....162.........*..................@.........249...........*............845..902...+................#....800..974....*................
+....................86...337...............710....................143.....................179.....976.......................419.........468.
diff --git a/2023/rust/day3/src/lib.rs b/2023/rust/day3/src/lib.rs
new file mode 100644
index 0000000..e70b994
--- /dev/null
+++ b/2023/rust/day3/src/lib.rs
@@ -0,0 +1,184 @@
+#[derive(Debug)]
+struct Digit {
+ value: u32,
+ s: usize, // start index
+ f: usize, // start end
+}
+
+#[derive(Debug)]
+struct Symbol {
+ elem: char,
+ i: usize,
+}
+
+fn parse(s: &String, border: &i32) -> (Vec<Digit>, Vec<Symbol>) {
+ let n: i32 = s.len() as i32;
+ let chars = s.chars().rev();
+
+ let mut pos1: i32 = -1;
+ let mut pos2: i32 = -1;
+ let mut incr = 1;
+ let mut digit = 0;
+ let mut symbols: Vec<Symbol> = vec![];
+ let mut digits: Vec<Digit> = vec![];
+ let mut multiples: Vec<usize> = vec![];
+
+ for i in 0..150 {
+ multiples.push(*border as usize * i);
+ }
+
+ for (idx, ch) in chars.enumerate() {
+ if ch.is_digit(10) {
+ if pos2 == -1 {
+ pos2 = n - idx as i32;
+ } else if multiples.contains(&idx) && pos2 != -1 {
+ pos1 = n - idx as i32;
+ digits.push(Digit {
+ value: digit,
+ s: pos1 as usize,
+ f: pos2 as usize,
+ });
+ incr = 1;
+ digit = 0;
+ pos2 = n - idx as i32;
+ }
+ digit += ch.to_digit(10).unwrap() * incr;
+ incr *= 10;
+ }
+
+ if !ch.is_digit(10) {
+ if digit != 0 {
+ pos1 = n - idx as i32;
+ if pos1 == -1 || pos2 == -1 {
+ panic!("wtf is that?!");
+ }
+ digits.push(Digit {
+ value: digit,
+ s: pos1 as usize,
+ f: pos2 as usize,
+ })
+ }
+ pos2 = -1;
+ incr = 1;
+ digit = 0;
+
+ if ch != '.' {
+ symbols.push(Symbol {
+ elem: ch,
+ i: n as usize - idx,
+ })
+ }
+ }
+ }
+ if digit != 0 {
+ pos1 = 0;
+ if pos2 == -1 {
+ panic!("wtf is that?!");
+ }
+ digits.push(Digit {
+ value: digit,
+ s: pos1 as usize,
+ f: pos2 as usize,
+ })
+ }
+
+ digits.reverse();
+ symbols.reverse();
+
+ (digits, symbols)
+}
+
+pub fn part1(input: &str) -> u32 {
+ let mut res: u32 = 0;
+
+ let arr: String = input.split('\n').map(|c| c.chars()).flatten().collect();
+ let border = input.find('\n').unwrap() as i32;
+
+ let (digits, symbols) = parse(&arr, &border);
+
+ let mut valid_s: Vec<usize> = Vec::new();
+ for symbol in &symbols {
+ valid_s.push(symbol.i - 1);
+ }
+
+ for digit in digits {
+ // 13 with border=10
+ // --> 12, 14, 2, 3, 4, 22, 23, 24
+ let mut discover: Vec<usize> = vec![];
+ for i in digit.s..digit.f {
+ let mut js = vec![
+ i as i32 - 1,
+ i as i32 + 1,
+ i as i32 - border - 1,
+ i as i32 - border - 0,
+ i as i32 - border + 1,
+ // i as i32 + border - 1,
+ i as i32 + border - 0,
+ i as i32 + border + 1,
+ ];
+
+ if digit.f as i32 + 1 >= border {
+ js.push(i as i32 + border - 1);
+ }
+
+ for j in js {
+ if j >= 0
+ && !((digit.s..digit.f).contains(&(j as usize)))
+ && !(discover.contains(&(j as usize)))
+ {
+ discover.push(j as usize);
+ }
+ }
+ }
+
+ for d in &discover {
+ if valid_s.contains(&d) {
+ res += digit.value;
+ break;
+ }
+ }
+
+ discover.sort();
+ }
+
+ res
+}
+
+// pub fn part2(input: &str) -> u32 {
+// let mut res: u32 = 0;
+//
+// res
+// }
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn example_part1() {
+ let input = include_str!("../example.txt");
+ let result = part1(input);
+ assert_eq!(result, 4361);
+ }
+
+ #[test]
+ fn input_part1() {
+ let input = include_str!("../input.txt");
+ let result = part1(input);
+ assert_eq!(result, 556367);
+ }
+ //
+ // #[test]
+ // fn example_part2() {
+ // let input = include_str!("../example.txt");
+ // let result = part2(input);
+ // assert_eq!(result, 2286);
+ // }
+ //
+ // #[test]
+ // fn input_part2() {
+ // let input = include_str!("../input.txt");
+ // let result = part2(input);
+ // assert_eq!(result, 71585);
+ // }
+}