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scala futures experimentation

This commit is contained in:
Luke Hubmayer-Werner 2022-12-22 11:09:01 +10:30
parent 9eae3e6b6e
commit 7f27119cbb
1 changed files with 22 additions and 5 deletions
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27
2022/day19.scala
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@ -1,3 +1,7 @@
import scala.concurrent.Future
import scala.concurrent.ExecutionContext.Implicits.global
import scala.util.{Failure, Success}
val inputLines = scala.io.Source.fromFile("input/19").getLines.toArray val inputLines = scala.io.Source.fromFile("input/19").getLines.toArray
val sampleLines = """ val sampleLines = """
Blueprint 1: Each ore robot costs 4 ore. Each clay robot costs 2 ore. Each obsidian robot costs 3 ore and 14 clay. Each geode robot costs 2 ore and 7 obsidian. Blueprint 1: Each ore robot costs 4 ore. Each clay robot costs 2 ore. Each obsidian robot costs 3 ore and 14 clay. Each geode robot costs 2 ore and 7 obsidian.
@ -76,11 +80,24 @@ def blueprintQuality(line: String, tMax: Int=24): (Int, Int, Int) =
val mostGeodes = simStep(0, Vector(1,0,0).toArray, Vector(0,0,0).toArray) val mostGeodes = simStep(0, Vector(1,0,0).toArray, Vector(0,0,0).toArray)
val quality = mostGeodes * bp val quality = mostGeodes * bp
println(s"Blueprint $bp: most geodes $mostGeodes = quality score $quality") println(s"Blueprint $bp at $tMax minutes: most geodes $mostGeodes = quality score $quality")
return (bp, mostGeodes, quality) return (bp, mostGeodes, quality)
@main def main() = @main def main() =
val part1 = inputLines.map(blueprintQuality(_)(2)).sum // val part1 = inputLines.map(blueprintQuality(_)(2)).sum
println(s"Part 1: total quality score: $part1") // println(s"Part 1: total quality score: $part1")
val part2 = inputLines.take(3).map(blueprintQuality(_, 32)(1)).product // val part2 = inputLines.take(3).map(blueprintQuality(_, 32)(1)).product
println(s"Part 2: $part2") // println(s"Part 2: $part2")
val p2Futures = Future.sequence(inputLines.take(3).map(line => Future(blueprintQuality(line, 32)(1))))
val p1Futures = Future.sequence(inputLines.map(line => Future(blueprintQuality(line)(2))))
p1Futures.onComplete {
case Success(results) => println(s"Part 1: total quality score: ${results.sum}")
case Failure(e) => e.printStackTrace
}
p2Futures.onComplete {
case Success(results) => println(s"Part 2: ${results.product}")
case Failure(e) => e.printStackTrace
}
Thread.sleep(1000)
// val part2 = p2Futures.product
// println(s"Part 2: $part2")