From 69243552de17f7b984a70dd27edc8b7090c36d43 Mon Sep 17 00:00:00 2001 From: Guido Schweizer Date: Sun, 3 Dec 2023 17:52:16 +0100 Subject: [PATCH] day 3 complete --- day_3/data | 140 ++++++++++++++++++++++++++++++++++++++++++++++++ day_3/impl.rb | 82 ++++++++++++++++++++++++++++ day_3/impl_2.rb | 105 ++++++++++++++++++++++++++++++++++++ day_3/run.rb | 24 +++++++++ day_3/test.rb | 36 +++++++++++++ 5 files changed, 387 insertions(+) create mode 100644 day_3/data create mode 100644 day_3/impl.rb create mode 100644 day_3/impl_2.rb create mode 100644 day_3/run.rb create mode 100644 day_3/test.rb diff --git a/day_3/data b/day_3/data new file mode 100644 index 0000000..af6939c --- /dev/null +++ b/day_3/data @@ -0,0 +1,140 @@ +...............776..............552........968..................589...26...........484..............958......186....546.........484......... +.........*.........778....................*....124...................................*...............*........%..26......................... +......194..380....@....900..........639....467........478*..............582...........798.............326...........894.........#........... +904...........*2.......#......259.....*..........801......464................597.569.............794+................$..218....502.......... +...*.....................-...$.....%..431.........*...810.....840+.668..........*.......144=.............................../...........%627. +...890...497.........829.643....504..........465..502..............*........488...................787.184...601....215........-450.......... +.......................*............684.....*.............466...970....646..%...........399...........*.............=....88...........=415.. +....................139........415...+......854.....683....*.........+.=.......107.676.....*451......83..416....856.....%....765............ +..............163..............*...................*......796.....992.............*...............................#.798.....*......819...... +.../....678..*...........429..351..........937......629.................*59.677..........652$.292....................*..431..184..*......688 +.79......*...694.......-...........492.247......26.......399/.=....................113.........*...................789....*.......469....... +.......94............667.............*..*...933...*684........861...687...567*927.*.....869..509.......................423.................. +.596............................561.271.349....-.........139.........@............278......*............@...942*....36...................... +.....475...........*268.........*...................695.................850..#.........233.876......@..768......425......85*734.......*349.. +.......*..119.96........287.....177.............940*......................*..445.........@.........577..........................39..30...... +.....26......*.......................1=.685..........3...120..81.......533...................................718................*........... +.....................306.........335.................*......+...*..................563..240..................*.......349*708...244...319.... +..........30..197...........639......................7.../.....471.......-.......@..*..%........895*680.....635.......................*..... +.....*116...*..*..............*...........445.............643.........75.29.....42.586..........................41.....@.....323.....860.... +.511.......105.71.......765...670.....489*.........426.........758.....................139............94.793......*....63.....*............. +...*.....................$..................470......*..........*.....69.......590.730*...........553...........814..........604............ +.680..............................443..............598...-.....318.....=........*........845..215..*.............................-.......... +............237.......180...........#.691...276...........909...............$..527...881.*.....*...585....224....762.....389..193........... +.....@.....=.........@....789.................*.......857........&.450...716.............149..885............*............*............504.. +993...906................*.....685..688........385...*........925..*................................700*...811..=......295.....$311.....-... +...@.................956..809.......*..............................577....965.......%846.....$...@.............839.......................... +.........704.393%....*............1..562..............716.................$..................387.645........................571.342./....... +......@..*.........226...........*.........526*914...*......172....-..........32............................211.......990......*....695..... +.....272..481.................288.....................370.....*.....740...........281..............430..13..$............................... +397............#............................65................677....................*.586..758....*......*.................49.#973....409.. +.............818.........103...........524.*.........150...........781...236.../891.....*.........456.416.591.691-...849....+...........&... +..................457@......*...........&..813...979*.....453*181....*.....-..........286.....565.....................&.......624........... +......#....................221..464..................................604.....978.........................................%412.*............. +619%..176.........=...280......*......*......................493...............*.......................570+....................961..233@.... +..............52..50....*.....26......518.207....%.465.........*.............871...817.............384........792.....@754.................. +............3*.......703............%..........554..............20.........................879.......-....646*...............415...814...... +........944......946..............766.477.492......835......806...........214.........*......*..............................*......%....633. +....266*......*.....-........................#.783*........*..................900.....852....271..+567.452..249..........850................ +...........938.661....770...87.841..................@......739../.....230.....*...916....................*..*...636..49.........18..*20..4.. +....110................*......*......#341.-.......*.75..........660..........117.....$.803@.780........172.......*....*.160/.....+.......... +....+..................92.693.............952..988..................670.....................@...972...........760..194...............24..... +........479*...880..=........&..475&..677..........%283.....642....*............359...154................755.............690...........&.... +...../.........*.....590..=..........&.......&....................765......./...*....................419........214-.......*...324.......... +......934...470...........10.......*....-....412............750...........496..651...+701...........*....................698......*217...... +............................./228...484.854...........627....%......795.......................*.............450...66........................ +............978$...274.......................822.........*.....-760............700.........235.346................*.............+.....885... +...................%...582..........338.@.....*...274..252.....................*...720....................700.18.41...........503.......+... +........4..960....................../....722..897.&..........987..........510..104....+..416.....549.......*...*...................407...... +.......*......*211............=725...................$574.......*.........................+......*.......788..350...432..............*...... +.244...921.........601....36*..................222..............918...344..733.....109.........610....66..............*...............937... +...*.........464...*.../.....991................*....................+....*....285*......538..........*.......914......526...465.722........ +............*.....362.460........49............66.121...=...............373.............=.........530..337....=.................*........606 +154...713...611............$725....................*..29...425..74..............920.................@.................389...........715..... +......*........../.....143.......................652.........*..*..711...69.26........406.....................37*175........122.....#....... +.....588........39....*......224.........*................868..800...&../...*....407.......46..387.728......................*............... +............-........39.........*.541.595.516...............................484.*.................*...........206.........636..807.......... +.............858.............716....*..........810*290..372........@949.........921...................428........*..+..........*............ +........486........301*307.........135.................*................264.178......838.....224..-......*......499..816.......227.......... +.......*........................................802...608............24*.......*.........940......98....960............................685.. +.......425.76.........+94..556...........699.......*.......................%....857.266.*.....................8................624*....=.... +............*.................*735......&....$..345....361%.803..856....732.........*....520....*..............%.......269...=.....286...... +...........73.901.../..............384.....520......#.........-./...........447......930......279.......634.............#..207.754......473. +..............@...538.936*484.....*....665...........630...............236...@.....%.....................*...985..406............-.......... +..............................328..531...%.616...........................*........64..497..105........844.....*......*......207............. +.....*730......................*.......................478..701........+..567........*...........110.......175.......6.737.......+....192... +..363......119....6....942......892....171..358.981..........*........731.........455....#..........*993.......383......*.........505..@.... +..............*....%.%....*............*......*..../..%.....................995........850...264..........82%.....=......735.../............ +..207...413/.349.@...628.685.........930......231....921.......................................$..142...........-............713....260..... +.................384.........527..........373.............@946....&...............948...949......*......349...838......................*.... +.......................210....*.....................*241.........333.......................*..723........*..........632....916-...164..63... +....789....../..859......@....770............286.881.................867.........218......346.........691..368......*....................... +......$...411.....@.781............857................*912.135.&27...........885....*.942.........%............436..264.449.577..92#........ +...............9....................*..............391.....*................*......54..=.........108.......................*................ +..............$..106........767..290...751................977............990................499...................466.........545........... +...............................=..........*..................................345............./....=.../...266.847....*605....*....219....... +..................984.....735..........761......727.........814.481.....737...*......936...........76.599.*....=...........247...=.......... +.....................*697...*.595.................=...........*........*.......480.........................822.....287..................941. +.....182*875...477#..............*...108...................390.......266...........678.593.......-..............$....&.649...../..../...*... +....................279..............*...136........@..........................513.=...*.........332...510.....337............534..236..101. +.......................*538........453......=.......390....235...................*......741............*.................792@............... +..492......639.650.........................................@.....................21........./.......170............................+..@..... +...*..942..=................794.........@..........456............185.395....437...........721..........206..+231...............638...424... +479......*....................*.........251....243*....387........=..................520.............$...../................................ +..........971.................995.........................................116.......-.....*950...*....731.....543.......+..............748.. +......522................852=..............380..848......932........482......*644......514........40.........#..........869........710..-... +.........*......................#955......./...*....../.....*46.......*.160#.................652..................218..........478*......... +.........870...254.........309.......106......214....840..#.........29.......%........111.....$.........20*865..........&.............694... +..................*316........*323......*................734.881.......33...84.97$..4*..........*135...............772.993............*..... +.......................208...............793.....157............*597....*....................818.........-...260.....*........933....384.... +..........106......34......358*263.................+...457*...$.......866.583....................439=..677......@................=.......... +......-...*........#.......................................87.68...............#.......186%..................&.....=626..................... +...191...136..453*.............#../537...............%.612........89..417......50.........................429..................859.......... +..................432....*89.20...................387..../....../.......*.........121...108...................................&............. +...........768........................134...793................339....206.........*......$.......394.......@.........974..........132*863... +......./...*................252.355.....#......................................335...169...332...*.......896....894..*...................... +....629....191..........369*.................109.............326..312*....&...........*.....*....478...........*......432...&......104...... +670............................&....967*........*.....................516..92..855...685.712..............936...............88....$......... +.....583......974....26*24......782.....806...160...............669...............@..........606*........%......89.......................... +786.............*................................................&..................=............742...........+...................%........ +......#....@.939......375..............332-..........575...546*........*....196.628.581....@...............288.........645...467.246..125... +....46...872.....414.....*..=......+........677................342..883.301..*...@.........699.261...796......*....809....-..*.......*...... +................$.....828....940..400.........$.40............................39.........*..............=.......-....*........780....925.... +.....*375.................39.............418....*................................../..279.367../676..........982.....216....=............... +..703......$....../............703*.......*..904.....465.........*182..92.........173...............610...65................685.....55$..... +.........904...650.................274...6.....................&.........*635...............787.306*.......*.............*.................. +..136........................................933......783.724.320...344..................../...........+....51...108..597.41.....809........ +...+........715.663............$.....821.....*...........*............*.....@657..354..411..........811..........*.......................... +......633.....*............*...925.........991...852........=...=......184..........*.........589.................788...191................. +.........*....574........368.....................@.......373..657.701........411..575.954&......*.......$.....748.........*....758.......... +........787........770.............................879............*......88....*..............119.....817.....*.........914....*......751... +.14.173...............*........................189*................509..%......29.............................87................683..*...... +...*........../.....563..270*876...123................................................../64.....216........................977......316..... +.......612..516.50...................*................762..23/.........26.........608.............$..466*214.......455...#..#..352......928. +........*.........*......296..@.......970..513.........*.........584..................233.....945................./.....846...+............. +......918.......640..585.....600..550.....*.......=....723.......*.............-.......-..418.....15.180...969.......................703.... +...@.......-63...........=........*.......839...769............76........671...268........+..........*.........965....#.....#.568...*....... +.194.....................453......530...................*675......487.=....+.........309....224..507.209.........@.138....300..*..$......... +.......@..@....846.............%.........714...468...150......88......510..............*...*.......*...........................9.816........ +.....234.140....*..............903..789.....*.*..............*..............631........702.80....33.........513........276.................. +.............381.......................*.803...474......267...296.436.......*........................679....*............*........939...784. +.....-..........................33&.158....................*......*.......569........487...871/............510......274.542.........*....... +......883.....*163...782..-.............379.764@.....912=..796...91.....................&.......979....907.....*......*........167....+.+873 +...........110........*..577........&....*............................*778...................$............@.241.428..949...680*.....513..... +....................924........471.470.268..486......../....#......567...........470..469.794....%...............................+.......... +..725*532......$........@.......*..........*........926......213............405.....*...*......355...615...#....73........151.....896....... +............980......969....812..28.936.....882..............................&...107.....377...........*.611.......+.......&..737........... +....$594...................*............156.....210....585...........234.821.........................403........837..........*....652....... +...........................247.@881..7.....*....*.....................*.....*.......*........140.351..........................510....*...... +...........790*776...................*...270...778......707.110.....487..486...460.70........*.....#...585.702..430..141...........34....... +...52.......................&216..788......................*...................*............199...........*....=......................989... +....$..445...498.254.508*.............*860..711.48......./.............596....305.....618..........337.............198....287............... +.........#....*....@.....352....*..645......*.............328......50.*..................=...-........*584..........*..........*275..986*527 +.............560..............815.........931......400............*...592......824.........807...591*................311.....82............. +.........%.......678.926........................19...*......545..649...........*...............*.....393....=896............................ +......834...........*............................/....386.....*......=290...772.............545.969...................679.820......704...... +..........122...........202....693.................*..............................555*826..............458......691......*.........*........ +....#.......&..%692........+......#..333............41...............=204..................868............/.164..................316........ +...346..................+.......$...*......396..315....119..@755...............942..918........................*........631.651............. +.................=....836......402.755............=.......*.......*....181.62...*.....%........................596......*............#591... +...............764.....................................488.....880.209........416..................183...156..........917................... \ No newline at end of file diff --git a/day_3/impl.rb b/day_3/impl.rb new file mode 100644 index 0000000..e8ee721 --- /dev/null +++ b/day_3/impl.rb @@ -0,0 +1,82 @@ +#prepare the input which is a string containing new lines +def parse(input) + data = [] + row = 0 + symbols = {} + numbers = [] + input.each_line do |line| + start_num = false + num = "" + num_cols = [] + + line.chomp.chars.each_with_index do |c,col| + if c == "." + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + elsif /\d/.match?(c) + # a digit + start_num = true + num += c + num_cols << col + else + # symbol + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + # fill adjacents + symbols[row] = {} if symbols[row].nil? + symbols[row][col-1] = true + symbols[row][col+1] = true + symbols[row-1] = {} if symbols[row-1].nil? + symbols[row-1][col] = true + symbols[row-1][col-1] = true + symbols[row-1][col+1] = true + symbols[row+1] = {}if symbols[row+1].nil? + symbols[row+1][col] = true + symbols[row+1][col-1] = true + symbols[row+1][col+1] = true + end + end + + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + row += 1 + end + data = [symbols,numbers] + data +end + +# result should a single string or integer +def calculate(data) + result = "" + symbols, numbers = data + selected_numbers = [] + numbers.each do |number_set| + number, row, cols = number_set + cols.each do |col| + if symbols.dig(row,col) + selected_numbers << number + puts "selected: #{selected_numbers}" + break + end + end + end + + result = selected_numbers.reduce(&:+) + + result +end diff --git a/day_3/impl_2.rb b/day_3/impl_2.rb new file mode 100644 index 0000000..b35b2ac --- /dev/null +++ b/day_3/impl_2.rb @@ -0,0 +1,105 @@ +#prepare the input which is a string containing new lines +def parse(input) + data = [] + row = 0 + symbols = [] + numbers = [] + input.each_line do |line| + start_num = false + num = "" + num_cols = [] + + line.chomp.chars.each_with_index do |c,col| + if c == "." + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + elsif /\d/.match?(c) + # a digit + start_num = true + num += c + num_cols << col + elsif c == "*" + # symbol + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + # fill adjacents + + symbols << [row,col] + else + # other symbol + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + end + end + + if start_num + # finish a number + numbers << [num.to_i, row, num_cols] + start_num = false + num = "" + num_cols = [] + end + row += 1 + end + data = [symbols,numbers] + data +end + +def find_adjacent_numbers(row,col,numbers) + adjacents = [] + matches = [ + [row-1,col-1], + [row-1,col,], + [row-1,col+1], + [row,col-1], + [row,col+1], + [row+1,col-1], + [row+1,col], + [row+1,col+1] + ] + numbers.each do |number| + num, row, cols = number + cols.each do |col| + if matches.include? [row,col] + adjacents << num + break + end + end + + end + + adjacents +end + +# result should a single string or integer +def calculate(data) + result = "" + symbols, numbers = data + selected_numbers = [] + symbols.each do |symbol| + row,col = symbol + adj = find_adjacent_numbers(row,col,numbers) + if adj.length == 2 + selected_numbers << adj.first * adj.last + end + end + + result = selected_numbers.reduce(&:+) + + result +end diff --git a/day_3/run.rb b/day_3/run.rb new file mode 100644 index 0000000..bbc4875 --- /dev/null +++ b/day_3/run.rb @@ -0,0 +1,24 @@ +if ARGV[0] == "2" + require_relative "impl_2" +else + require_relative "impl" +end + + +def print(result) + if result.is_a? Array + result.map! {|l| "#{l}\n" } + end + + puts result +end + +def run + puts "running your implementation" + input = File.new("day_3/data").read + data = parse(input) + result = calculate(data) + print(result) +end + +run diff --git a/day_3/test.rb b/day_3/test.rb new file mode 100644 index 0000000..ed2f3db --- /dev/null +++ b/day_3/test.rb @@ -0,0 +1,36 @@ +if ARGV[0] == "2" + require_relative "impl_2" + RESULT = 467835 +else + require_relative "impl" + RESULT = 4361 +end + + +INPUT = <<~IN +467..114.. +...*...... +..35..633. +......#... +617*...... +.....+.58. +..592..... +......755. +...$.*.... +.664.598.. +IN + +def test_example + parsed = parse(INPUT) + result = calculate(parsed) + + if result == RESULT + puts "Test successful. Now run with real input" + puts "ruby day_3/run.rb #{ARGV[0]}" + else + puts "Test failed" + puts "expected \"#{RESULT}\" got \"#{result}\"" + end +end + +test_example