day1

day1.scala

import scala.io.Source

def makeBag(xs: List[String]): List[Int] =
  def cal(xs: List[String], store: Int): List[Int] = xs match
    case (h :: t) if h != "" => cal(t, store + h.toInt)
    case (h :: t) if h == "" => store :: cal(t, 0)
    case _ => Nil
  cal(xs, 0)

def ans1(xs: List[String]): Int = makeBag(xs).max

def ans2(xs: List[String]): Int = makeBag(xs).sortWith(_ > _).take(3).sum

@main
def app =
  val input = Source.fromFile("day1.txt").getLines.toList
  print(ans2(input))