JRuumis

import scala.annotation.tailrec

object Day11MonkeyInTheMiddle extends App {

    // -= Item =-
    // Item used to be `type Item = Long` for Part 1.
    class Item(val divisions: Map[Int, Int]) {
        override def toString: String = s"Item(${divisions})"

        // Part 2 logic:

JRuumis

import scala.annotation.tailrec

object Day10CRT extends App {

    val commandsInput = scala.io.Source.fromFile("./Sources/Day10CRT.txt").getLines().toVector

    abstract class Command {
        val totalCommandExecutionCycles: Int
        val increaseRegistryBy: Int
        def isAtLastCommandCycleWith(commandCycle: Int): Boolean = commandCycle == totalCommandExecutionCycles

JRuumis

import scala.annotation.tailrec
import scala.math.abs

object Day9RopeBridge extends App {

    val ropeStepsInput = scala.io.Source.fromFile("./Sources/Day9RopeBridge.txt").getLines()

    case class Move(deltaX: Int, deltaY: Int)

    val moves: List[Move] = ropeStepsInput.map(_.split(" ").toList).map{_ match {

JRuumis

import scala.annotation.tailrec
import scala.math.abs

object Day9RopeBridge extends App {

    val ropeStepsInput = scala.io.Source.fromFile("./Sources/Day9RopeBridge.txt").getLines()

    case class Move(moveX: Int, moveY: Int)

    val moves: List[Move] = ropeStepsInput.map(_.split(" ").toList).map{_ match {

JRuumis

import scala.annotation.tailrec
import scala.math.abs

object Day9RopeBridge extends App {

    val ropeStepsInput = scala.io.Source.fromFile("./Sources/Day9RopeBridge.txt").getLines()

    case class Move(moveX: Int, moveY: Int)

    val moves: List[Move] = ropeStepsInput.map(_.split(" ").toList).map{_ match {

JRuumis

import scala.annotation.tailrec

object Day8TreetopTreeHouse extends App {

    val forestInput: List[List[Int]] = scala.io.Source.fromFile("./Sources/Day8TreetopTreeHouse.txt").getLines().toList.map(_.toList.map(_.asDigit))

    // Part 1
    val forestWithCoords = forestInput.map(_.zipWithIndex).transpose.map(_.zipWithIndex).transpose.map(l => l.map {case( ((t,x),y) ) => (t,x,y)})

    @tailrec

JRuumis

import scala.annotation.tailrec

object Day7NoSpaceOnDevice extends App {

    val fileSystemBrowseContent = scala.io.Source.fromFile("./Sources/Day7NoSpaceOnDevice.txt").getLines().toList

    val folderNamePattern = "\\$ cd ([0-9a-zA-Z_/.]+)".r
    val fileNamePattern = "([0-9]+) ([0-9a-zA-Z_/.]+)".r

    @tailrec

JRuumis

object Day6TuningTrouble extends App {

    val tuningInput: List[Char] = scala.io.Source.fromFile("./Sources/Day6TuningTrouble.txt").toList

    def tuner(stream: List[Char], currentPosition: Int, sampleSize: Int): String = stream match {
        case a if a.size >= sampleSize && a.take(sampleSize).toSet.size == sampleSize => s"First position with sample size ${sampleSize} detected at ${currentPosition}"
        case a :: rest => tuner(rest, currentPosition+1, sampleSize)
        case _ => s"Error! Packet with sample size ${sampleSize} not detected!"
    }

JRuumis

object Day5SupplyStacks extends App {

    val stacksAndMovesInput: Array[String] = scala.io.Source.fromFile("./Sources/Day5SupplyStacks.txt").getLines().toArray

    val lastStacksLine: Int = 8
    val firstmoveLine: Int = 11
    val numberOfInputStacks: Int = 9
    val inputStackElementPositions = (0 to numberOfInputStacks-1).map(1 + 4 * _)

JRuumis

object Day5SupplyStacks extends App {

    val stacksAndMovesInput: Array[String] = scala.io.Source.fromFile("./Sources/Day5SupplyStacks.txt").getLines().toArray

    val lastStacksLine: Int = 8
    val firstmoveLine: Int = 11
    val numberOfInputStacks: Int = 9
    val inputStackElementPositions = (0 to numberOfInputStacks-1).map(1 + 4 * _)