The worst code I've ever written, but somehow it works

.github/workflows/build.yml

@@ -1,5 +1,8 @@
 name: Build
-on: [push]
+on:
+    push:
+        tags:
+          - "^test$"
 jobs:
     gobuild:
         runs-on: ubuntu-latest

README.md

@@ -0,0 +1,8 @@
+# Advent of Code 2023
+
+An attempt to start programming again.
+
+- [Day 1](./day01/trebuchet.go)
+- [Day 2](./day02/lottacubes.go)
+
+This repo gets automatically mirrored to [Github](https://github.com/Doddophonique/aoc2023).

UNLICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

day03/engine-schema.go

@@ -0,0 +1,142 @@
+package main
+
+import (
+    "fmt"
+//    "strings"
+    "bufio"
+    "os"
+    "regexp"
+    "strconv"
+)
+
+func check(e error) {
+    if e != nil {
+        panic(e)
+    }
+}
+
+func PrintAndWait(x ...any) {
+    fmt.Print(x)
+    fmt.Scanln() 
+}
+
+func main() {
+	file, err := os.Open("./inputs/day03_input")
+	check(err)
+	defer file.Close()
+
+	// This regex find the numbers inside strings
+	renum := regexp.MustCompile("[0-9]+")
+	resym := regexp.MustCompile("[^0-9.]+")
+
+	scanner := bufio.NewScanner(file)
+	var lines []string
+	var totalSum int = 0
+
+	// Read the whole file into an array of strings
+	for scanner.Scan() {
+    	lines = append(lines, scanner.Text())
+	}
+	numLines := len(lines)
+	numbers := make([][]int, numLines)
+
+	// The 2D array of numbers will hold all the numbers to easily
+	// match them with corresponding strings in the file using the index
+	// For every line in the file, cerate an array of numbers
+	for i := 0; i < numLines; i++ {
+    	tempNums := renum.FindAllString(lines[i], -1)
+    	for j := 0; j < len(tempNums); j++ {
+    		num, _ := strconv.Atoi(tempNums[j])
+    		numbers[i] = append(numbers[i], num)
+    	}
+	}
+	/* 	Line [0] needs to check only line 1 for symbols.
+		Similarly, the last line needs to check only
+		(last line index - 1) for symbols.
+		So we first check the line [0], then start a loop
+		from 1 to (last line index - 1)
+	*/
+	firstLineNums 			:= renum.FindAllStringIndex(lines[0], -1)
+	firstLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[0], -1)
+	secondLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[1], -1)
+	// For every *number index range*, check if in the same line there is a
+	// symbol on (first - 1) or (last + 1), check in other lines if there is
+	// a symbol in a specific interval of numbers. If you find a match, you
+	// can break as you just need one symbol
+	for i := range firstLineNums {
+    	for j := range firstLineSymbolsIndex {
+			if firstLineSymbolsIndex[j][0] >= firstLineNums[i][0] - 1 &&
+			   (firstLineSymbolsIndex[j][0] <= firstLineNums[i][1]) {
+    			   totalSum += numbers[0][i]
+    			   break
+			   }
+    	}
+    	for j := range secondLineSymbolsIndex {
+			if (secondLineSymbolsIndex[j][0] >= firstLineNums[i][0] - 1)  &&
+			   (secondLineSymbolsIndex[j][0] <= firstLineNums[i][1]) {
+    			   totalSum += numbers[0][i]
+    			   break
+			   }
+    	}
+	}
+	// Now we loop from 1 to (last index - i)
+	for i := 1; i < len(lines) - 1; i++ {
+    	// We need to check the current line against an interval of three lines
+    	// breaking the loop for a single number as soon as we find a match
+    	// (we don't want duplicate matches)
+    	currentLineNums := renum.FindAllStringIndex(lines[i], -1)
+    	previousLineIndex := resym.FindAllStringIndex(lines[i - 1], -1)
+    	currentLineIndex := resym.FindAllStringIndex(lines[i], -1)
+    	nextLineIndex := resym.FindAllStringIndex(lines[i + 1], -1)
+OuterLoop:
+    	for k := range currentLineNums {
+    		for j := range previousLineIndex {
+        		if previousLineIndex[j][0] >= currentLineNums[k][0] - 1 &&
+        			previousLineIndex[j][0] <= currentLineNums[k][1] {
+            			totalSum += numbers[i][k]
+            			continue OuterLoop
+        			} 
+    		}
+    		for j := range currentLineIndex {
+        		if currentLineIndex[j][0] >= currentLineNums[k][0] - 1 &&
+        			currentLineIndex[j][0] <= currentLineNums[k][1] {
+            			totalSum += numbers[i][k]
+            			continue OuterLoop
+        			} 
+    		}
+    		for j := range nextLineIndex {
+        		if nextLineIndex[j][0] >= currentLineNums[k][0] - 1 &&
+        			nextLineIndex[j][0] <= currentLineNums[k][1] {
+            			totalSum += numbers[i][k]
+            			continue OuterLoop
+        			} 
+    		}
+    	}
+	}
+	// Now we need to loop the last line and confront it with previous
+	// and itself
+	lastLineNums 			:= renum.FindAllStringIndex(lines[len(lines) - 1], -1)
+	lastLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[len(lines) - 1], -1)
+	notLastLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[len(lines) - 2], -1)
+	// For every *number index range*, check if in the same line there is a
+	// symbol on (last - 1) or (last + 1), check in other lines if there is
+	// a symbol in a specific interval of numbers. If you find a match, you
+	// can break as you just need one symbol
+	for i := range lastLineNums {
+    	for j := range lastLineSymbolsIndex {
+			if lastLineSymbolsIndex[j][0] >= lastLineNums[i][0] - 1 &&
+			   (lastLineSymbolsIndex[j][0] <= lastLineNums[i][1]) {
+    			   totalSum += numbers[len(lines) - 1][i]
+    			   break
+			   }
+    	}
+    	for j := range notLastLineSymbolsIndex {
+			if (notLastLineSymbolsIndex[j][0] >= lastLineNums[i][0] - 1) &&
+			   (notLastLineSymbolsIndex[j][0] <= lastLineNums[i][1]) {
+    			   totalSum += numbers[len(lines) - 1][i]
+    			   break
+			   }
+    	}
+	}
+	fmt.Printf("The total sum is: %d\n", totalSum)
+}

day03/inputs

@@ -0,0 +1 @@
+../inputs

inputs/day03_input

@@ -0,0 +1,140 @@
+...............307............130..................969...601...186.........................................312....628..........878..........
+......479#../..*..............................#.....*......*............../309.....484........................*......-..........+.....89....
+...........726..352...461..69..............435.....390...625....................................459.........152...-....580............*.....
+.......................*.......454*674.448......65................257....104*762....&..............*269.........558.&.....*907.........652..
+.....................164.....-..............532*.....................................484......108........955.........252..........321.......
+.......270....*..............470.......................632....................*...................$............352...................*......
+820........782.347...................*838..*371..475.......607...557.......201.29..............814....=.....15*....893..............143.....
+...*..796...........449..138......991.....2........*....28....*.....*588.............................353..................*.................
+582...../..333.............@..224............%....4.....*.....399........883..#859.........*341...........583*40.......366.951......170*814.
+...............................*....*.....252......................551.....*.......91...374.....665.804*..........938...........694.........
+...549.769..............527..466.169.712.......898.......408......*............-...*............*.......912.......*.......771%.../..........
+.....*...=.875*342......$........................@........-.....846.........610..829.934*508...79............&691..48...................483.
+....402.............................423-..............................465.........................342.....................@.................
+..............837..................................264..................................*823.180....@.........%.........538............634..
+..........807*....990+.................453............*277........657..379...........200.......*.............296..............767..885......
+744...611................@........+.............500........866.....*......*..717............656..80...254................&775...%..*........
+.......%.......*.2....878..793.97..143.413.&856......329*...*...732......878./.........191...............*..........+..............584......
+.........535.506..............*.........-.................368.......................#.+........*.........429.......363......................
+..564....*................966........................189......=............/24....939......26...547.......................193*241...........
+.....*......................-..........................*...204........156......7............*................/.717*..................296....
+..826.....924.......................956..............920..................259.-......$......286........6..955.........................=..457
+......124*......................48.....=...435..............12.....886....*........411..........*170..%............90..-295.624.............
+...........................290....*375.............747.....................175..........................653........*...........*............
+..........642*157...........*.............................218.945..949&...................864+....720..*...........883.786-.....434..-..&...
+...118.................@.....309...586............698.152....*..............250......*954........*......932...414...................239.39..
+......@..999..574.......302..................53..=......*......933.69..............21.........538.............@................143..........
+........*........+...........267..587*........*...........25......*..........241......289.........436.........................*.............
+.......448.............437....*.......334...605......../..=...........689...%.........*...25.........*....97........171.780....813..836.....
+......................*........169...............427...94.........389..$........360............/....692.....*......*......*.........%.......
+......641...-..679.541..56.606...............490*.............871..........757.................612........64.....256...*...281..............
+...........419...*......*..*..........................................*705...-.......................*.........@.......121..................
+.......*.......786....738...28.........83.550........980...........915...............475..@.........524...=..145.349.................331....
+....215.922.......................766.%....*.............993.................-.968..*.....301............205............................*...
+............775..............273..*.........168.....504...$.....179.....+..466...*....352........850................771-.........-.......729
+..699@........................*..174...............#........573*.......191.......567..*....925*....$......825..................543....&.....
+........#....................939.......137...#..........474......../.................975........$.....219*............935............94.....
+.....508...547....+.455..347.....593....&...56...140.......*246.198.....@....41...........46.476...........539...........+.15...............
+...............210..........-.......*...............*773.............336....*..............+..........847.....*.............*.....957.......
+...435...........................736...987.....573........32*............135.....60*405.........802*6...$......252....@...208.129*..........
+.............187....353...............*..........*..504......276.........................#.........................838.............604......
+..202...79....$........*..82-.............../.580......*..............181.......288......925.939....292......158..................*.........
+.....................746.................381.......211..272...........*.....890....*215.........=...........*............953....22..........
+.........................957......#..................*......../.......240....*............18.................294...766...............*......
+.......483..434$........*.........184......#.....&..561.......354.........445....*626.......*174......................*54....603..432.457...
+......#..........916.231..*178..........967...902........895..................135.............................207...............*...........
+..941.....600...*...................31...............*.../............138*559.......19.803..........396.........&..377.....261...904........
+...........*...146....#........626....*............809......199................@........*..............+.....#.......*.275*............%....
+...........181.......459.486.....*.....912....787..........*..................847.....160.433.728.........901......404................899...
+..........................*.....97...........*..............252..............................*.......+.........451........434..*............
+...621...294..10.........913..........5..318.349.......749.......457......594........................326.........*..........%.884........494
+.....*...*...-.........................$...........157.@........*..........*....&..951....524..869#..............405.................416....
+....864.631....=......958..........................*....../.....953.......690..144..$.......*..........................204.&....%.......+...
+750.............868....*.....430............882...98.......655..........................98.961...674........*.........*....955..530.........
+...*..................459.......*929..........$...................281....-...............*......*.....38...688........878...................
+.779....494.................+........-725............978..............134......2.......465....685.929*............759............351..291...
+.....51*.......244....173..222..233........153*......*....123..............*.....324......................#.456.#...%...............-..@....
+.........&....*.......$.............................542...*......77.......288...*....*51.......624......68....*.888....507..................
+...213.367.953................................-667.......225.......*285.......506.177....*32.....*..........43........../...................
+...#.................753.%........506.................................................131.....793...-.....-....................917$.147.....
+.........275.............372.....$..........$........679.407..674..205#....406............647.....297..642.........621...............*......
+.........*...................................173........*.....................*721........*.......................*....#207..........533....
+.........68..............&.........274............322*...................707............280...............188..272..+...........223.........
+.....553..................289.534.....%...830.........927..................*.176............*.............*..........217.........*..........
+...................$..-.......-..........*................796*..........606...%...756...-.994....252.694..351.793$........930..230.....611..
+.841%..659.237..356...116.............683...860...............494................$....127..............*....................*.........*.....
+......#....................558..#891........*........418............&.............................22..323.....540...92....792.........408...
+.................231*780....*.........*452.82........*........940..709....................662....*..............*...@...........432.........
+....456.91...............972.....=.523.............949.837#........................823....*....627..............880....511.............203..
+...$......@.........190.......162........508..........................158..861..........533.............749............................=....
+......................*.............117..@....608....967.10............../........................&........$....................800.........
+..752/...988.....82..281....894........*......-..................533.............692...............524.............=....623......@....939...
+.........*...217*..............*.......51.........400...............&........200..@......435..484&........2*648.95..416.....................
+.........319..................788....................*..279.......*.....................*...........321.........*..........464...286*....311
+................733...457............*.............65...*.........620...205....457.782..513..342..........561.670.160..899.*.........607....
+...............*.....+............397.....613/..........938.171...............*....................869......$.........*.....589.............
+.............85..............=324.................189.........#.......808..578..-.........170*........*..&..........461.....................
+......................992.............555........=...............375.....=.....599............336...835.282.....714.........................
+...@......622.........%...............-....%....................*.....................705.287................../....955.426..140............
+..202.....*...365.........$8....636*....148....................720............648......+...*................%........*...................220
+.........223...+....................554........629...........*......785..............&.....460....*...#..848...24.948....961............*...
+....................274..........................*...........995...........92.823.....958........185.983...............=..*....566....33....
+.............146#....+....865.307................797...411................./..............577.......................245....935..............
+....150...................*......*..560.................+...+298...............*....213.......984.......103.811.......................&.....
+.......*..297..-905.822.643.....452....*333............................527..911.......*.........=.........*....*...............834.76.410...
+..........+........../.......*...............774.....................................228..764-...........806..621.............*.....=.......
+.......83.......753.......664.36..371..132.........341.......347...267........@813.............341*322..............237%.....134......$.....
+....66*...630......*.238.............$.$......609.....*673.........*...920-...............%................937*873................844.807...
+.........*......410.....#.........90..........%....-............789.........316.........755.932..$....................*921....363..=........
+.........524........-.........52..........422...349......................15....*............*....550.........384..9.22........*.............
+..............752....809..........$........*............#......397.......*..147....666.....83................*..............747......@474...
+.......995......*............898.753.....305...........306......*......344............#....................985./................206=........
+......*......172...............*...........................-..603..........*771...870...260....609..............588.....+503................
+.....475.....................412.634*480..155....$824...845........409..367..........@..........*..498...............................893....
+317......737.654.............................*97............781...*..............#......184..252..*....@.564*347......312*..............*...
+............*.............658..........91.............402..*.....929.....346.....912......=......825.412.........908..........&..........500
+.889..%.............471*...*...........*.........685-...+..208.........................*..................*291..*.............926.826.......
+.......647...@..........84.929........518.375.........+.............%...............139................467......813.690...........*.........
+...........276...................165.........%......778............412....594.619...............768........401..........195*861..70...$.....
+......................1.....584.........+.......954...........299@..............*..............*......./../............................759..
+........886..356.&784.......*........414.............................702.......128...+315.....302.....283....+.......309*231.......316......
+..........$.............811....................*.............237....*.....................426.....713.......638.442............957*.........
+....572...........491&..*......46............41.362.............*..361.700...883..478.......%.......*............./.....245.................
+655*.......720...................*............................211.........*....*....*.........502.862.........*............+.......137......
+.....302....*...............762..668.....446.............................552.....488.......................415.622.113.437........%.........
+.190*.......362...581......#...............*...803.14.............&61.................$......972...479......................................
+......760............=................478..627....*.......34*..........................51......=....%.....828............................531
+........*.....764#...................*..............529............................356...........*.........-...................996*271..*...
+220...58............721...508.872.634...........300*.........507.....290...........*..........356.780...36.....553.......................875
+...............292.@......*............833.71...................*305.......382.....273................../.............998.........679.......
+.........616..*......../..524.885.....-......*..527*538...794......../.....=....$........=....................812........*..........*.+297..
+....579....*...629....666.................982...................467...468........292.....67........398...........*..283..225......550.......
+241*.....415.....................832............................&...........&.................481..*.....444*826.....*......................
+.....*..........................*.......$...920......600-..323#............930....591....357...*...653..............182.............816..575
+..178.157...............186=..568.../...134....#....................292............*.....+....438..........+824...........859.814..#........
+..........*209...462................606......%......405............*........*..334.623................*...................+...@.............
+.......784......*............................632...@.......*....597........320.........219............210...........805.....................
+595............664............&..%847.................$.749.434.....*894..........757...*..................$813......*.......&.%....278.191.
+............................311.....................156.........244...............*....163....$...................706.....893..115...*......
+.......451-...215...474.............610.687......................*..............535........424..........727*411.....................314.....
+..............*................82.....*./....-.....482*307.....502.......595...................490..............590....*406.............309.
+.............97.............................860...................................................*.......395...#...656.....................
+......732........516......486......662*............*739...........=....579.............754......821..718...&..............609...753..103.62.
+.908...*...........*.........*...........*824...197.....$......227...........956............331.......*......390.................*....*.....
+....*...210......284.........821......148................644....................*....533.......*.....280....*.......-..........904.....748..
+....368.......$.........542....................................*.411...........982...*....958.671........975.........610....................
+...........820...358$....&..298........$....62...@....983..+..49.....254............784...*......................947.....................776
+.....766.......................*......68.....#..477...$...428....209*.......*...265.......191......*........268...=....81...618#........=...
+........*847.....661.474......624.........................................223...#....*...........74...................*.....................
+.................*......%.574.....................976.475*618.@.....=..27.........975.280.....*......=...............13.....757-.......112..
+.....721.........748.........*......392&.........../..........636.911......................359.......857.656....72-.....................*...
+........*...................405..40...........87+..............................%89..............237.........#...................83....632...
+........108...............................................172.54*.................................&...................%........*............
+............736........3....727.....=.40...................*.........877.........=191.......................+...139.903........151.....%....
+...725...56..%..410...$..@.....*...2...*....969.............207...../.......831........977.........158....946...*...................967.....
+.....-....*......+......346..163......8........*..........@..................*.....509*.....458...*..............834...636@.....304......357
+...-.......790......308........................453......396...........871..712..*.......625...%.426......777.423............................
+..810.................%....355.421.....36.........................151...........935.774*........................#.......619.390.............
+.............360*201..........*.......%...794...-..70......./24..*..........................765......*303.167.........*..&....-.........*...
+.........*.......................273......%...198..*..............967................724=...*.....776........@.120.696......=.........37.301
+......333.588.........205..........................572......................................673.........876..................893............

inputs/day03_test_input

@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..