Advent of Code 2022 Day 5 worksheet output

Day05.worksheet.sc

type State = Vector[String]

val lines = io.Source.fromResource("2022/day-05.txt").getLines()
// lines: Iterator[String] = <iterator>
val drawing = lines.takeWhile(_.nonEmpty).toVector
// drawing: Vector[String] = Vector([T] [V]                     [W]    , [V] [C] [P] [D]             [B]    , [J] [P] [R] [N] [B]         [Z]    , [W] [Q] [D] [M] [T]     [L] [T]    , [N] [J] [H] [B] [P] [T] [P] [L]    , [R] [D] [F] [P] [R] [P] [R] [S] [G], [M] [W] [J] [R] [V] [B] [J] [C] [S], [S] [B] [B] [F] [H] [C] [B] [N] [L],  1   2   3   4   5   6   7   8   9 )
val steps = lines.toList
// steps: List[String] = List(move 7 from 3 to 9, move 6 from 2 to 1, move 2 from 4 to 8, move 10 from 8 to 4, move 1 from 2 to 4, move 15 from 4 to 1, move 28 from 1 to 3, move 1 from 2 to 5, move 7 from 5 to 9, move 5 from 9 to 5, move 21 from 3 to 1, move 1 from 6 to 4, move 4 from 9 to 2, move 7 from 9 to 2, move 4 from 2 to 6, move 1 from 9 to 1, move 2 from 4 to 9, move 2 from 7 to 4, move 4 from 3 to 5, move 2 from 7 to 9, move 5 from 2 to 7, move 2 from 9 to 1, move 1 from 9 to 2, move 3 from 3 to 7, move 3 from 5 to 2, move 2 from 6 to 1, move 1 from 9 to 4, move 25 from 1 to 9, move 2 from 5 to 3, move 1 from 1 to 7, move 9 from 7 to 1, move 1 from 2 to 8, move 16 from 9 to 7, move 5 from 9 to 5, move 7 from 1 to 8, move 1 from 9 to 7, move 18 from 7 to 4, move 1 from 3 to 4, move 1 from 1 to 8, move 2 from 8 to 1, move 1 from 3 to 9, move 17 from 4 to 5, move 5 from 8 to 6, move 2 from 8 to 1, move 6 from 6 to 7, move 2 from 9 to 4, move 5 from 1 to 3, move 3 from 3 to 7, move 1 from 1 to 2, move 2 from 3 to 8, move 2 from 4 to 1, move 2 from 8 to 7, move 2 from 9 to 7, move 1 from 2 to 4, move 1 from 2 to 4, move 2 from 1 to 7, move 11 from 7 to 1, move 4 from 4 to 1, move 3 from 1 to 3, move 7 from 1 to 8, move 4 from 2 to 8, move 2 from 1 to 4, move 2 from 4 to 3, move 2 from 1 to 3, move 3 from 7 to 4, move 4 from 8 to 6, move 1 from 7 to 5, move 2 from 4 to 1, move 4 from 6 to 2, move 3 from 1 to 8, move 6 from 8 to 6, move 1 from 2 to 1, move 23 from 5 to 8, move 21 from 8 to 3, move 2 from 6 to 9, move 1 from 8 to 9, move 2 from 3 to 7, move 26 from 3 to 8, move 2 from 9 to 2, move 8 from 6 to 3, move 3 from 5 to 4, move 1 from 7 to 4, move 1 from 7 to 9, move 1 from 5 to 4, move 5 from 2 to 9, move 7 from 9 to 8, move 38 from 8 to 7, move 1 from 1 to 7, move 1 from 4 to 9, move 3 from 4 to 1, move 4 from 3 to 2, move 1 from 1 to 7, move 34 from 7 to 6, move 3 from 4 to 7, move 1 from 4 to 2, move 2 from 1 to 3, move 1 from 2 to 9, move 5 from 3 to 6, move 1 from 4 to 6, move 4 from 2 to 6, move 1 from 9 to 5, move 4 from 7 to 3, move 1 from 5 to 9, move 1 from 9 to 1, move 1 from 3 to 6, move 1 from 9 to 3, move 5 from 7 to 9, move 1 from 1 to 9, move 3 from 9 to 1, move 1 from 3 to 4, move 38 from 6 to 1, move 2 from 9 to 4, move 3 from 3 to 6, move 1 from 9 to 5, move 8 from 6 to 8, move 1 from 3 to 6, move 1 from 6 to 8, move 2 from 4 to 3, move 4 from 8 to 5, move 1 from 6 to 2, move 1 from 2 to 7, move 1 from 6 to 3, move 3 from 8 to 7, move 4 from 7 to 6, move 1 from 4 to 1, move 5 from 1 to 4, move 4 from 6 to 5, move 3 from 5 to 8, move 3 from 5 to 3, move 1 from 8 to 2, move 6 from 3 to 8, move 1 from 5 to 7, move 1 from 2 to 1, move 1 from 7 to 6, move 3 from 4 to 9, move 6 from 8 to 6, move 3 from 8 to 2, move 3 from 6 to 2, move 1 from 4 to 5, move 1 from 6 to 9, move 2 from 6 to 1, move 1 from 4 to 1, move 2 from 5 to 2, move 1 from 8 to 5, move 1 from 9 to 8, move 22 from 1 to 5, move 3 from 2 to 3, move 1 from 8 to 4, move 2 from 3 to 6, move 1 from 6 to 4, move 1 from 3 to 8, move 1 from 2 to 8, move 10 from 5 to 3, move 1 from 6 to 8, move 2 from 8 to 4, move 1 from 6 to 3, move 2 from 2 to 3, move 1 from 8 to 5, move 13 from 3 to 4, move 2 from 1 to 7, move 11 from 1 to 2, move 3 from 4 to 5, move 6 from 1 to 9, move 8 from 2 to 6, move 4 from 2 to 1, move 2 from 6 to 5, move 4 from 1 to 8, move 2 from 8 to 6, move 1 from 7 to 1, move 1 from 7 to 2, move 8 from 6 to 5, move 1 from 8 to 4, move 1 from 1 to 6, move 10 from 5 to 1, move 3 from 9 to 4, move 6 from 1 to 3, move 9 from 4 to 5, move 1 from 2 to 1, move 1 from 4 to 9, move 1 from 6 to 8, move 1 from 2 to 1, move 1 from 4 to 8, move 2 from 8 to 9, move 1 from 8 to 6, move 1 from 3 to 2, move 1 from 1 to 4, move 1 from 2 to 5, move 1 from 1 to 8, move 1 from 6 to 8, move 8 from 5 to 3, move 1 from 8 to 7, move 1 from 7 to 8, move 6 from 9 to 6, move 2 from 9 to 2, move 1 from 9 to 7, move 1 from 8 to 5, move 1 from 2 to 7, move 1 from 2 to 9, move 16 from 5 to 2, move 4 from 5 to 1, move 12 from 3 to 6, move 1 from 5 to 4, move 8 from 6 to 9, move 1 from 8 to 5, move 2 from 9 to 6, move 2 from 2 to 5, move 3 from 1 to 4, move 3 from 6 to 7, move 7 from 9 to 6, move 4 from 7 to 1, move 1 from 5 to 2, move 1 from 3 to 2, move 4 from 1 to 9, move 4 from 9 to 5, move 12 from 6 to 7, move 4 from 2 to 6, move 4 from 2 to 9, move 7 from 6 to 3, move 3 from 9 to 8, move 5 from 2 to 4, move 4 from 5 to 7, move 1 from 9 to 4, move 13 from 7 to 8, move 3 from 7 to 8, move 2 from 3 to 2, move 5 from 1 to 5, move 11 from 4 to 9, move 7 from 9 to 1, move 4 from 4 to 3, move 1 from 6 to 8, move 8 from 8 to 4, move 1 from 1 to 7, move 3 from 4 to 6, move 4 from 2 to 8, move 3 from 5 to 4, move 1 from 4 to 1, move 4 from 9 to 8, move 3 from 5 to 2, move 2 from 2 to 3, move 1 from 6 to 7, move 7 from 1 to 9, move 3 from 7 to 4, move 1 from 4 to 2, move 1 from 6 to 8, move 1 from 5 to 7, move 1 from 6 to 7, move 9 from 4 to 6, move 7 from 9 to 5, move 1 from 4 to 3, move 1 from 5 to 6, move 4 from 3 to 7, move 3 from 3 to 1, move 2 from 2 to 4, move 3 from 1 to 6, move 4 from 5 to 1, move 2 from 5 to 3, move 3 from 6 to 8, move 6 from 7 to 3, move 10 from 3 to 7, move 10 from 6 to 4, move 3 from 1 to 9, move 4 from 7 to 2, move 2 from 3 to 5, move 1 from 3 to 5, move 1 from 1 to 2, move 3 from 9 to 1, move 2 from 1 to 9, move 4 from 2 to 5, move 10 from 4 to 9, move 2 from 8 to 7, move 1 from 2 to 9, move 1 from 9 to 4, move 1 from 1 to 9, move 3 from 7 to 8, move 5 from 9 to 8, move 6 from 5 to 4, move 5 from 9 to 6, move 5 from 8 to 5, move 4 from 5 to 2, move 3 from 7 to 8, move 3 from 9 to 1, move 2 from 5 to 8, move 1 from 4 to 6, move 3 from 6 to 3, move 8 from 4 to 3, move 2 from 6 to 7, move 24 from 8 to 9, move 1 from 6 to 9, move 8 from 9 to 3, move 1 from 1 to 9, move 2 from 8 to 3, move 3 from 9 to 4, move 18 from 3 to 5, move 1 from 2 to 6, move 1 from 6 to 1, move 13 from 9 to 8, move 3 from 4 to 1, move 1 from 4 to 2, move 1 from 5 to 3, move 1 from 9 to 2, move 6 from 2 to 9, move 3 from 3 to 1, move 3 from 7 to 6, move 2 from 1 to 5, move 3 from 6 to 7, move 17 from 8 to 1, move 8 from 5 to 7, move 11 from 7 to 5, move 1 from 4 to 5, move 24 from 1 to 3, move 7 from 5 to 9, move 11 from 5 to 9, move 1 from 5 to 4, move 1 from 5 to 2, move 1 from 4 to 7, move 16 from 3 to 1, move 3 from 5 to 8, move 1 from 9 to 1, move 12 from 9 to 2, move 5 from 3 to 1, move 2 from 8 to 5, move 2 from 3 to 4, move 1 from 8 to 6, move 2 from 5 to 3, move 1 from 6 to 1, move 2 from 4 to 1, move 8 from 2 to 1, move 24 from 1 to 6, move 1 from 9 to 6, move 4 from 2 to 6, move 4 from 3 to 2, move 4 from 9 to 4, move 1 from 7 to 5, move 6 from 9 to 1, move 17 from 6 to 4, move 1 from 1 to 9, move 2 from 9 to 7, move 9 from 6 to 7, move 12 from 7 to 2, move 11 from 1 to 2, move 12 from 4 to 2, move 1 from 1 to 4, move 1 from 5 to 7, move 2 from 6 to 3, move 2 from 4 to 3, move 1 from 1 to 6, move 5 from 4 to 2, move 1 from 7 to 5, move 2 from 6 to 9, move 6 from 2 to 4, move 1 from 5 to 8, move 3 from 4 to 1, move 1 from 8 to 9, move 5 from 4 to 1, move 1 from 1 to 2, move 1 from 3 to 8, move 7 from 1 to 6, move 1 from 8 to 6, move 1 from 3 to 5, move 1 from 1 to 8, move 1 from 4 to 5, move 2 from 5 to 9, move 1 from 8 to 2, move 2 from 6 to 8, move 1 from 8 to 6, move 1 from 6 to 8, move 1 from 8 to 5, move 4 from 9 to 5, move 1 from 9 to 6, move 1 from 6 to 8, move 37 from 2 to 5, move 1 from 2 to 8, move 37 from 5 to 8, move 21 from 8 to 4, move 1 from 3 to 7, move 12 from 4 to 1, move 1 from 7 to 8, move 4 from 6 to 3, move 1 from 4 to 2, move 2 from 2 to 6, move 2 from 3 to 2, move 2 from 2 to 7, move 2 from 7 to 1, move 3 from 5 to 3, move 2 from 2 to 8, move 15 from 8 to 7, move 1 from 7 to 2, move 2 from 5 to 8, move 5 from 4 to 3, move 3 from 6 to 2, move 8 from 1 to 9, move 8 from 9 to 4, move 7 from 8 to 9, move 2 from 8 to 5, move 4 from 1 to 9, move 10 from 3 to 2, move 1 from 6 to 7, move 6 from 7 to 8, move 10 from 4 to 7, move 1 from 3 to 7, move 3 from 9 to 1, move 5 from 8 to 1, move 5 from 2 to 7, move 1 from 4 to 3, move 1 from 5 to 6, move 10 from 1 to 7, move 34 from 7 to 4, move 1 from 6 to 9, move 1 from 7 to 3, move 8 from 4 to 2, move 1 from 9 to 7, move 1 from 7 to 9, move 22 from 4 to 5, move 1 from 3 to 8, move 6 from 5 to 6, move 1 from 8 to 4, move 9 from 9 to 4, move 1 from 3 to 2, move 4 from 2 to 1, move 11 from 2 to 6, move 14 from 4 to 7, move 1 from 2 to 1, move 12 from 5 to 6, move 7 from 7 to 9, move 2 from 5 to 4, move 1 from 8 to 5, move 6 from 6 to 8, move 3 from 7 to 8, move 1 from 2 to 6, move 2 from 4 to 3, move 1 from 3 to 8, move 1 from 2 to 5, move 1 from 3 to 4, move 5 from 8 to 9, move 5 from 1 to 4, move 3 from 8 to 9, move 5 from 4 to 7, move 18 from 6 to 3, move 2 from 8 to 9, move 3 from 6 to 3, move 5 from 7 to 1, move 1 from 6 to 7, move 3 from 9 to 7, move 6 from 7 to 8, move 8 from 9 to 8, move 1 from 7 to 6, move 12 from 3 to 1, move 2 from 9 to 7, move 1 from 8 to 6, move 9 from 8 to 9, move 2 from 8 to 7, move 1 from 7 to 8, move 2 from 1 to 6, move 7 from 1 to 9, move 16 from 9 to 5, move 4 from 3 to 9, move 8 from 1 to 3, move 5 from 5 to 1, move 1 from 4 to 3, move 4 from 7 to 6, move 3 from 8 to 2, move 8 from 3 to 2, move 11 from 2 to 7, move 3 from 6 to 1, move 4 from 3 to 6, move 12 from 5 to 7, move 2 from 3 to 6, move 7 from 1 to 7, move 2 from 5 to 1, move 1 from 9 to 2, move 1 from 5 to 7, move 31 from 7 to 4, move 6 from 9 to 1, move 6 from 4 to 7, move 16 from 4 to 5, move 1 from 9 to 4, move 1 from 7 to 6, move 4 from 4 to 1, move 11 from 5 to 9, move 2 from 5 to 6, move 1 from 2 to 9, move 4 from 5 to 1, move 8 from 9 to 2, move 12 from 6 to 5, move 11 from 5 to 1, move 18 from 1 to 2, move 3 from 4 to 3, move 2 from 6 to 7, move 2 from 9 to 1, move 1 from 5 to 9, move 3 from 9 to 5, move 13 from 2 to 8, move 10 from 8 to 2, move 3 from 8 to 6, move 3 from 3 to 9, move 7 from 1 to 5, move 6 from 5 to 6, move 3 from 1 to 2, move 5 from 7 to 8, move 13 from 2 to 8, move 9 from 6 to 3)

val start: State = drawing.init.transpose.collect {
  case col if col.exists(_.isLetter) => col.mkString.stripLeading
}
// start: Vector[String] = Vector(TVJWNRMS, VCPQJDWB, PRDHFJB, DNMBPRF, BTPRVH, TPBC, LPRJB, WBZTLSCN, GSL)

def move(state: State, step: String, multi: Boolean): State = step match
  case s"move $c from $s to $d" =>
    val count = c.toInt
    val source = s.toInt - 1
    val dest = d.toInt - 1
    val moving = state(source).take(count)

    state
      .updated(source, state(source).drop(count))
      .updated(dest, (if multi then moving else moving.reverse) ++ state(dest))

val finalState1 = steps.foldLeft(start)(move(_, _, multi = false))
// finalState1: Vector[String] = Vector(LP, JWBRDZVFBHBGS, SLRNBPPCJ, VFC, LDSR, TT, WJ, QPRTBBHPWNRMBDCVTJ, MPN)
val ans1 = finalState1.map(_.head).mkString
// ans1: String = LJSVLTWQM

val finalState2 = steps.foldLeft(start)(move(_, _, multi = true))
// finalState2: Vector[String] = Vector(BP, RWGBSTLSMPLZT, QHJTCLBHR, WRN, DJWN, BR, BF, JDBFVNRPSCVBDJCTPV, MPP)
val ans2 = finalState2.map(_.head).mkString
// ans2: String = BRQWDBBJM

This is cleaned up a bit after live streaming my original solution on Twitch: https://www.twitch.tv/videos/1671262882?collection=qkGiZ2kBLheGhA