🎄Advent of Code - Day 3 ✨ part 2

src/main/kotlin/AdventOfCode/Puzzle.kt

@@ -1,16 +1,17 @@
 package AdventOfCode
 
-interface Puzzle {
+abstract class Puzzle(private val year: String, private val day: String) {
+    protected val inputData = this.readInputFromFile()
 
     // Part one of the AoC puzzle.
-    fun partOne()
+    abstract fun partOne()
 
     // Part two of the AoC puzzle.
-    fun partTwo()
+    abstract fun partTwo()
 
-    fun readInputFromFile(dayNumber: String): List<String> {
+    fun readInputFromFile(): List<String> {
         // read calibrations from resources file
-        this.javaClass.getResourceAsStream("/aoc2023/input_day$dayNumber.txt")?.bufferedReader()?.useLines { lines ->
+        this.javaClass.getResourceAsStream("/aoc$year/input_day$day.txt")?.bufferedReader()?.useLines { lines ->
             return lines.toList()
         }
         throw Exception("Could not read calibrations from file.")

src/main/kotlin/AdventOfCode2023/day1/Trebuchet.kt

@@ -2,12 +2,10 @@ package AdventOfCode2023.day1
 
 import AdventOfCode.Puzzle
 
-class Trebuchet : Puzzle {
+class Trebuchet : Puzzle("2023", "1") {
     override fun partOne() {
-        // read calibrations from file
-        val calibrations = readInputFromFile("1")
         // print calibrations
-        val calibrationData = calibrations.map {
+        val calibrationData = inputData.map {
             // replace non-digits with empty string
             it.replace(Regex("[^0-9]"), "")
         }.map {
@@ -21,10 +19,8 @@ class Trebuchet : Puzzle {
     }
 
     override fun partTwo() {
-        // read calibrations from file
-        val calibrations = this.readInputFromFile("1")
         // print calibrations
-        val calibrationData = calibrations.map { it ->
+        val calibrationData = inputData.map { it ->
             val digitsData = mapOf(
                 "one" to "1",
                 "two" to "2",

src/main/kotlin/AdventOfCode2023/day2/CubeConundrum.kt

@@ -3,12 +3,10 @@ package AdventOfCode2023.day2
 import AdventOfCode.Puzzle
 import java.util.Scanner
 
-class CubeConundrum : Puzzle {
+class CubeConundrum : Puzzle("2023", "2") {
 
     private fun getGameList(): List<Game> {
-        val input = this.readInputFromFile("2")
-
-        return input.map {
+        return inputData.map {
             val game = Game(0, null)
             val line = it.split(":", limit = 2)
             // Get game id

src/main/kotlin/AdventOfCode2023/day3/GearRatios.kt

@@ -5,8 +5,7 @@ import AdventOfCode.Puzzle
 data class EnginePart(var number: Int, var row: Int, var startIndex: Int, var endIndex: Int)
 data class Gear(var row: Int, val column: Int, var engineParts: MutableSet<EnginePart>)
 
-class GearRatios : Puzzle {
-
+class GearRatios : Puzzle("2023", "3") {
     private fun scanForEnginePats(data: List<String>): List<EnginePart> {
         val foundEngineParts: MutableList<EnginePart> = mutableListOf()
 
@@ -82,8 +81,6 @@ class GearRatios : Puzzle {
     }
 
     override fun partOne() {
-        val inputData = this.readInputFromFile("3")
-
         val foundEngineParts: List<EnginePart> = scanForEnginePats(inputData)
 
         foundEngineParts.forEach { it ->
@@ -97,7 +94,6 @@ class GearRatios : Puzzle {
     }
 
     override fun partTwo() {
-        val inputData = this.readInputFromFile("3")
         val foundEngineParts: List<EnginePart> = scanForEnginePats(inputData)
         val gears: MutableList<Gear> = mutableListOf()