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DAY 8 BABY LETS GO

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Aly 2019-12-07 21:19:25 -08:00 committed by Anthony Cerruti
parent 37bc98fafb
commit e02dfaab32
2 changed files with 34 additions and 0 deletions
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33
aoc/src/main/scala/aoc/y2019/Day08.scala Normal file
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@ -0,0 +1,33 @@
package aoc.y2019
import aoc.Day
object Day08 extends Day {
val imgWidth = 25
val imgHeight = 6
override def part1(input: String): String = {
val image = input.map(_ - '0').toVector.grouped(imgWidth).toVector.grouped(imgHeight).toVector
val layerWithLeastZeros = image.minBy(_.map(_.count(_ == 0)).sum)
(layerWithLeastZeros.map(_.count(_ == 1)).sum * layerWithLeastZeros.map(_.count(_ == 2)).sum).toString
}
override def part2(input: String): String = {
val image = input.map(_ - '0').toVector.grouped(imgWidth).toVector.grouped(imgHeight).toVector
val message = image.foldLeft(Vector.fill(imgHeight, imgWidth)(2)) { (image, vector) =>
image.zip(vector).map {
case (imageRow, vectorRow) =>
imageRow.zip(vectorRow).map {
case (2, v) => v
case (o, _) => o
}
}
}
"\n" ++ message.map(_.map {
case 0 => " "
case 1 => "#"
}.mkString).mkString("\n")
}
}

1
aoc/src/main/scala/aoc/y2019/package.scala
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@ -10,6 +10,7 @@ package object y2019 extends Year {
"5" -> Day05,
"6" -> Day06,
"7" -> Day07,
"8" -> Day08,
)
}