Day 2 part 1
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1
day3/.gitignore
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day3/.gitignore
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target
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7
day3/Cargo.lock
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day3/Cargo.lock
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "day3"
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version = "0.1.0"
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8
day3/Cargo.toml
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day3/Cargo.toml
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[package]
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name = "day3"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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140
day3/input
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140
day3/input
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...733.......289..262.....520..................161.462..........450.........................183.............................................
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....*....................*.............707.352....*............/.....................801...@...............333..196........484.635......287.
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....42.........131....913..............*......&..........634..................440..&...............83.....@...........404$..=....*..423.*...
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618.......272....*.........&......547.344...............#............689.589.*....150......382=................................168......433.
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..........=...............253.102*.........#......78.......804..........*........................858.........................-..............
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...69.......*37...510.797...........596.946........#..................................602.175...............203..100..........681.......546.
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...*.....110.....*......*..........*..........396......858=.......381....................*.......246*637..........=..391+...................
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...973........274..551.............576.21@.......$..................*.......................................176............181.883......*...
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.......223............+............................649.701.936...17..482..........80...........210.......+...=.........563.......*...222....
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.373..*..................532....707.......956....@..+.....*......*...........+927.*......698......+....763.........275*.....27..498.........
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....*......................+......*.........*..719....540.........24...=...........39...*...................514.........126..#..............
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.....974.......952*308..@..........965....450............*4.343......772../..............437............=....*............./.....309........
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............58..........840.....34................877........$............189..................*186......657.670................&.......854.
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....22.406..*......883............*......880...........939...................................58.....387..................*..................
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......*....587.........564/......599.......*...........*......................831.891/...552..........$.534+.....%802.975.960.346*..........
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.792+..............828................-807.6...........326....324...722...334..*...........*................................................
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.....................*.......................895..764*.........=...*........*..611..........79.......461@..546*940...818.346..........247...
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....%....473......................288.......*....................932.....590...........918......791..................................*......
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.....621...*........................*....129....425.10.....*.....................419....*.........*...166......#11...................831....
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119........302.832.............159.506................*.229.....493....39...............587....523.......*..........610...805.559...........
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......971.......*..........229*..........961........139..................+....411..................554....26.90.....$........*....-.........
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...........463.615...................315....#...................................-...422.......109.-............*247................231.56...
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..279*159.*...........126...569...............906..20..........990..........27.........%.......*.............................960-......./...
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...........364....812*.......*..$.........812*....*.....369....&......176......................15.346#...#.....908...828..........-650......
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.842*771....................189..9...............42...............897*...............479.................99.....+.......*...................
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................842*356.849...............336.......201................412......./...@...........205....................956....*319.383*....
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...438....&................*......../.......*.../...*....&.......62...*........348..............*....................54.....302.........298.
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......$..318................264.....28...259..824..306...249.......&.392...444............889#..418....945...496..../.......................
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................610.160......................................................%.699...987......................*.............................
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..........@125.....*..............292..#....514..........................165....*...*....&.....*672.....551.194.426......53...500.599...278.
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.275.192.........................*....854..#..............190............$.....40..662.706..774.........$................../..*......*......
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....*.........*840....*638.....82...................520...*................................................../.190...719.......34....620....
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...........532.....521................................*...423..75..........+....-........#...29.......258.605.....*..-......................
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...........................37........../354.%453.....248.........*...561.481....727....437........969...*......243..........................
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..................................183.........................+..250...+...................312.....=....150............@...229..............
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...624...454*710..../..........=..*......../........%30....308..............................*................+...381..941........461.341....
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......=............19.........297.......213..........................%............*522......442............962...-............92..-.....*...
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.................................................324.663............775...290=.301...............=...15........=....780..................562
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747........................438...35...806*.......*......................................%396..508......*700...16..-..$..230....443..617.....
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.......$.........447......*...............336..424.........618........-..276......260............................452......#......*...*......
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....824..@916....%...488..145....%.....55..........821.....#.....620.773....*116..*.......384............156.972................974..872....
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...................=...........494.....*......609................*...............768..195..*......108/..........*......440..................
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...187...........135.=.....44.........860..........$.......+..923...........966..........#..136.................423.......#....185..........
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.....*....298........761.........................217....157..................*.....................292....268........#........./............
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..789........../.375.........919.......425.........................542.....691..69..........184......*.......*.....578............531.......
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.......740..619..*..............=........%....788.....+..324..........*..........*......531..*..=82....962.409.690..........981.............
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......*...........652..+.........................*....32.#...........53...........761...*...353.....43*.......................*....6....611.
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....589......../........190.362@....961...........917......*...........................165...............&..718...............633...*.......
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.............781...565...............*................&..324...............................339..........964..+..........%..........427..312.
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.........927.......*........#260......919.......828..469........585..........803............/...&.......................365.................
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....406..........190........................308.*.................*.............*2.803&.........417....=............................955..126
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.....#...61.75.......149....293.768....678#......675............449.....@...............%...............347......301.....-.490.....*........
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............*........*.........*.............751........................888..&..348..49.747.........................*.318..#....888.........
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..........160......335.................455....*.......761...................564..*............*926...654...../....907................857....
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.....446.....................@....915.....&....639...=...........285..............567......862................731..............9........*...
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..........513.............694..........$...............233..721.&................................806.....101.........729.......@.........292
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...........*.....565..................329................*..*........137......$849...=773...........=...*.............*..+..........32......
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...359.277..849.....*399..................274....535....348.950.....*...............................................553..607......../.......
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.....%.*.................*...146.564.818....*.....*................438..............343..945......85............162.........................
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...#...67.374..*593.....740......*......*..553...795..664...$................493#....*............-...............*...971...................
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...510.....+........843.......791..277.................*....958....................489..#.................*657.213.....*...610.....193......
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........*......#....#.................#.......$..&12....531......167......659*...........521...157*....896...........503......+.......*241..
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257..171.245....959........................109................+...............454..................239...../................................
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...*...............................................#..........203...%...&..............359.330.846........751...382.985&.........646$..#....
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..624........453..................870......890#...662.............371..311...739..........*.......*.............*............=.........817..
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..................................*....................250.....54............*......../..........182...........237.....261@.250.............
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................743.......946.....943.....414#...80....@.........*..751............159..448..............91.............................&529
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683....@....370..............*........569..........$........131...........@34..........*....736.........*...434*929.........127.............
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...*.110.....*....48..........644....*....467.................*...............92.....673.......*718.....697.............979.&...............
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.745.......503.......288..827.....911.......+.......79..290.191..........$....*....................................230..........517.........
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.........%.....551..=.....#...........192.....917..&............597...479.....316.743...%.........#................*........122..*..........
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....529.461.../..............793.........*633..*.................%..................=.604.........320.......393..599.........*....717.......
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768...*...............=567.....-.144..............545................6....591..............216*.......73..*....*........215+.842............
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.....783....855............196......*.........909..*......537.......*......=....435............874.../...902.657........................@449
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.............*........%510........28..........*...605.....@.......468............#.....630........................418@..............701.....
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......397.....748........../...+........487..521......934...................&992.....-.....160.......477.....-.......................*......
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.916.................476.651..462..........%...........*...464......................425....*...........*..531...735....=..878.....853.......
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....*...............*.............*..................965...*.........754..3..657.......................92..........@..838...................
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.....116.....469...498........537..666....622&............237.......*..........*....204...........242.........&...............599=..........
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..............-................../.............283=...........283#.919.........638.*.........452.....*794......204.326...................168
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...........................541........................544.............../183........67..903+........................*....75.512..605........
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860..............*.........*.............455....730....*......................143................@....-.....=...366.......@......*...+59....
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...*..............447....916.....127........+.....*.....60................./....*...............572.658...891...+...300.....674.733.........
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.768................................*.-..........522.28.......870.....-....89./......764*...........................*........%..............
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............606....*...................798..............298...*......342......430........668.........485.270.265/..893..............=....524
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......#.880*.......88..907.........239..........509....=......406.+..........................264........*................829........991.%...
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....850.................%.....&913....*...........*...............302..&228.......%601....63*......414....*156.............&...310..........
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.............@....184.......=.......260..........748........................149................................895.....697.......*.66.......
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..........483.......*....500..970.......88..941...........25.....623...436...*.....................278..........=......*......522..*........
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................................*.........*.-.......885....*.......#....$..848........260.........-.....579.........950...........948.......
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...........270..........+....$..736.....245.........*....936.512........................*...@..........*.....$.&.........790................
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.....................634...764....................488.........#......454...............46.995........344...59..135..........#.@851...@949...
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808.......214.............................................610...................................185*........................................
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...........*.............+...........812........606..........*.................383..................218...355/................804.@687......
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.....751.476......145.....991.314.........................123.....917......434....*.634..&....@.................805....15......*............
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......#......25......*884......*..@......526*.................*20....*....*.....328.$....672.245....*392.423$...-.....*......83....484.581..
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..............................440.759............124*397...779.......752.303.....................764.................376.806......*....*....
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.401..976...75....765.......................%.......................................430...................................*......796....82..
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........*...&......*......474...2.-351....287.....=........@.......%....%....*731......$.......=....976.........960#.381..192...............
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........808........959.......#.....................322......243...534.134.828............*....95.........241...........*.......388...567....
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....$.........511......435.........825..................................................742...............&........%....888...#.............
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....53...........-....................$.......-...........................191.....933........454...................649..........=...........
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.....................993..430*....624........817.102.......660...............*.../.....157/...*...............................845...........
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631........#..........641..759......880.@....................740........247....................*...........*............$....310............
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137.......*.................243..............783*......940......*....*........*......155......*25...........*...$...902........217..........
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886.............................................40.................506.421..............726............171...............676*964.....*......
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.....................244....6.....................................789......................687..............................................
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109
day3/src/main.rs
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109
day3/src/main.rs
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use std::{
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fs::File,
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io::{BufRead, BufReader},
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ops::Range,
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};
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fn main() {
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let grid = read_grid();
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let grid_ref: Vec<_> = grid.iter().map(AsRef::as_ref).collect();
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let numbers = Number::discover(&grid_ref);
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let part1_result = part1(&numbers, &grid_ref);
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let part2_result = part2(&numbers, &grid_ref);
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println!("part 1: {part1_result}\npart 2: {part2_result}");
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}
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fn part1(numbers: &[Number], grid: Grid) -> i32 {
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let mut total = 0;
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for number in numbers {
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if number.is_part(grid) {
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total += number.value;
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}
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}
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total
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}
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fn part2(numbers: &[Number], grid: Grid) -> &'static str {
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"unsolved"
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}
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type Grid<'a> = &'a [&'a [char]];
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fn read_grid() -> Vec<Vec<char>> {
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BufReader::new(File::open("input").expect("input"))
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.lines()
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.map(|line| line.expect("read").chars().collect::<Vec<_>>())
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.collect()
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}
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#[derive(Debug, Default, Clone, PartialEq, Eq)]
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struct Number {
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value: i32,
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line_number: usize,
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location: Range<usize>,
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}
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impl Number {
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fn discover(grid: Grid) -> Vec<Number> {
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let mut numbers = vec![];
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for (line_number, line) in grid.iter().enumerate() {
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let mut i = 0;
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while i < line.len() {
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let mut chr = &line[i];
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if chr.is_ascii_digit() {
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let start = i;
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let mut text_of_number = String::new();
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while i < line.len() && line[i].is_ascii_digit() {
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text_of_number.push(*chr);
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i += 1;
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if i == line.len() {
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break;
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}
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chr = &line[i];
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}
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numbers.push(Number {
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value: text_of_number.parse().expect("parse number"),
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line_number,
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location: start..i,
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});
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}
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i += 1;
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}
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}
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numbers
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}
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fn is_part(&self, grid: Grid) -> bool {
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for digit_index in self.location.clone() {
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for xoff in [-1_i32, 0, 1] {
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for yoff in [-1_i32, 0, 1] {
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if xoff == 0 && yoff == 0 {
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// skip the actual number
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continue;
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}
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let line_number: i32 = self
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.line_number
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.try_into()
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.unwrap_or_else(|_| panic!("invalid line number {}", self.line_number));
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let line_number: usize =
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(line_number + yoff).max(0).try_into().unwrap_or_else(|_| {
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panic!("bad yoff {yoff} at line_number {line_number})")
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});
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let y = line_number.min(grid.len() - 1);
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let line = grid[y];
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let digit_index: i32 = digit_index
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.try_into()
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.unwrap_or_else(|_| panic!("invalid digit {}", self.line_number));
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let digit_index: usize = (digit_index + xoff)
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.max(0)
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.try_into()
|
||||
.unwrap_or_else(|_| panic!("bad xoff {xoff} at digit index {digit_index}"));
|
||||
let x = digit_index.min(line.len() - 1);
|
||||
let chr = line[x];
|
||||
if chr != '.' && !chr.is_ascii_digit() {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
false
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue