README.md

@@ -5,11 +5,11 @@ This repo contains my attempt at this year's Advent of Code (2023)
 I will try and do some problems (probably not all of them) in Scala
 
 ## Progress:
-#### Stars: 28 / 50
+#### Stars: 26 / 50
-|        Mon         |        Tue        |        Wed         |        Thu         |        Fri         |        Sat        |        Sun         |
+|        Mon         |        Tue        |        Wed         |        Thu         |        Fri        |        Sat        |        Sun         |
-|:------------------:|:-----------------:|:------------------:|:------------------:|:------------------:|:-----------------:|:------------------:|
+|:------------------:|:-----------------:|:------------------:|:------------------:|:-----------------:|:-----------------:|:------------------:|
-|                    |                   |                    |                    | 1<br>:star::star:  | 2<br>:star::star: | 3<br>:star::star:  |
+|                    |                   |                    |                    | 1<br>:star::star: | 2<br>:star::star: | 3<br>:star::star:  |
-| 4<br>:star::star:  | 5<br>:star::star: | 6<br>:star::star:  | 7<br>:star::star:  | 8<br>:star::star:  | 9<br>:star::star: | 10<br>:star::star: |
+| 4<br>:star::star:  | 5<br>:star::star: | 6<br>:star::star:  | 7<br>:star::star:  | 8<br>:star::star: | 9<br>:star::star: | 10<br>:star::star: |
-| 11<br>:star::star: |        12         | 13<br>:star::star: | 14<br>:star::star: | 15<br>:star::star: |        16         |         17         |
+| 11<br>:star::star: |        12         | 13<br>:star::star: | 14<br>:star::star: |        15         |        16         |         17         |
-|         18         |        19         |         20         |         21         |         22         |        23         |         24         |
+|         18         |        19         |         20         |         21         |        22         |        23         |         24         |
-|         25         |                   |                    |                    |                    |                   |                    |
+|         25         |                   |                    |                    |                   |                   |                    |

src/day15/Box.scala

@@ -1,33 +0,0 @@
-package day15
-
-import scala.collection.mutable.ArrayBuffer
-
-class Box(val id: Int) {
-  var lenses: ArrayBuffer[Lens] = new ArrayBuffer()
-  var lensesLabels: ArrayBuffer[String] = new ArrayBuffer()
-
-  def addLens(lens: Lens): Unit = {
-    if (lensesLabels.contains(lens.label)) {
-      val i: Int = lensesLabels.indexOf(lens.label)
-      lenses(i) = lens
-    } else {
-      lenses.addOne(lens)
-      lensesLabels.addOne(lens.label)
-    }
-  }
-
-  def removeLens(label: String): Unit = {
-    if (lensesLabels.contains(label)) {
-      val i: Int = lensesLabels.indexOf(label)
-      lenses.remove(i)
-      lensesLabels.remove(i)
-    }
-  }
-  def getFocusingPower(): Long = {
-    var power: Long = 0
-    for ((lens: Lens, i: Int) <- lenses.zipWithIndex) {
-      power += (i+1) * lens.focalLength
-    }
-    return power
-  }
-}

src/day15/Lens.scala

@@ -1,5 +0,0 @@
-package day15
-
-class Lens(val label: String, val focalLength: Int) {
-
-}

src/day15/Puzzle2.scala

@@ -1,71 +0,0 @@
-package day15
-
-import scala.io.{BufferedSource, Source}
-import scala.util.matching.Regex
-import scala.util.matching.Regex.Match
-
-object Puzzle2 {
-  var steps: Array[String] = Array.empty
-  val boxes: Array[Box] = new Array(256)
-  val regex: Regex = new Regex("([a-z]+)(-|=\\d)")
-  def loadInput(path: String): Unit = {
-    val source: BufferedSource = Source.fromFile(path)
-    val line: String = source.getLines().mkString
-
-    for (i: Int <- 0 until 256) {
-      boxes(i) = new Box(i)
-    }
-
-    steps = line.split(",")
-
-    source.close()
-  }
-
-  def hash(str: String): Int = {
-    var value: Int = 0
-    for (c: Char <- str) {
-      value += c
-      value *= 17
-      value %= 256
-    }
-    return value
-  }
-
-  def getFocusingPower(): Long = {
-    var power: Long = 0
-    for (box: Box <- boxes) {
-      power += (box.id+1) * box.getFocusingPower()
-    }
-    return power
-  }
-
-  def placeLenses(): Unit = {
-    for (step: String <- steps) {
-      val m: Match = regex.findFirstMatchIn(step).get
-      val label: String = m.group(1)
-      val labelHash: Int = hash(label)
-      val action: Char = m.group(2)(0)
-      val box: Box = boxes(labelHash)
-      if (action == '=') {
-        val lens: Lens = new Lens(label, m.group(2)(1) - '0')
-        box.addLens(lens)
-      } else {
-        box.removeLens(label)
-      }
-    }
-  }
-
-  def solve(path: String): Long = {
-    loadInput(path)
-    placeLenses()
-
-    val solution: Long = getFocusingPower()
-
-    return solution
-  }
-
-  def main(args: Array[String]): Unit = {
-    val solution: Long = solve("./res/day15/input1.txt")
-    println(solution)
-  }
-}

tests/day15/Puzzle2Test.scala

@@ -1,9 +0,0 @@
-package day15
-
-import org.scalatest.funsuite.AnyFunSuite
-
-class Puzzle2Test extends AnyFunSuite {
-  test("Puzzle2.solve") {
-    assert(Puzzle2.solve("tests_res/day15/input1.txt") == 145)
-  }
-}