Merge pull request scalacenter#230 from scalacenter/add-day-25-code

add day 25 code

Author: bishabosha

2022/input/day25

@@ -0,0 +1,119 @@
+22-=0-1-=
+1-==1200200=22-1==2=
+2-01=--01==01
+20-=
+21=210=002
+12=-0002
+1=100-==0
+1101
+2==-=0=0110-
+2=100122==--1-
+2=1-2==2--1
+1==0=2=0==1100
+2=0==-2
+1=1222202101--=
+1101=2111-11=
+1=11=2022-11-0=
+1=2=1102-
+1--21=1--=
+11-
+1001-10-
+201222-1-2
+122--2
+2-
+11--2-=20=11-2=0
+1-000=1221==2-
+1=-==-=2-0
+121-
+1--2-=---0=01
+1=00=010-1-20
+1=110=2
+1110-=01--0-12--0
+200022-
+2=-=0=-1==2-=2222
+20201
+11-0
+1==
+1-=---2==20=01
+2=2=-1
+1==01-100
+1-=----=--=
+1-011--20=1-==2121
+101---1=-1--0=21--2
+221=0100--020=11
+1=-121=2=-1-=
+11210-
+1=0=2=22-==-==-
+2=2220210221-202
+1--1=---00-11
+2=0--
+1=-2=-1==2=0
+1=0=0=
+122012210-=010=1
+21-1-220=21-=-00
+2-=2==0
+1220
+20
+1=0=22=-21101
+2-===0==1-210
+1=-220=121=----2
+21=0=-=0---0===1=--
+202-22112---0-2=
+10=0
+11
+102120--=0-021-121
+100--221=
+2--011=-=202
+1=-
+110=0-0-021-
+121
+1-0210-0
+2-10=2
+2=-0-1=00--22
+121-=2
+12-212110-022-2211
+1=222==11=-=-01=10
+200-0120=
+1-00===12=-1=-0--
+100-1
+102-2201
+10-=0-==2=2==2=0
+12=01
+1012-2
+1=0-02=21=1==1
+2=021-
+1-001-
+10202-00=12===11-1
+1=
+20=11=0112=
+2--1=1-1121
+2-2=---222
+1=-001==-0-
+1-=112-=
+11011
+1=2==1
+1-=2=2201
+2==222-==
+101-0-=2
+1-10-0212-0==0-10
+1-2-1-=01100
+121=0-12-2
+20=0=0-0
+22000-==0-1-2=0=0=
+10=
+2101102
+1120===10=2-2=02-
+1-=10--211
+2===-01==1=--===-
+1=21-201-==200=
+1=-=2=10
+220-120=-0-1010
+12011
+1-0=2
+1---01
+1=-=1=021=0=0=011
+1=10-212-0
+2=
+10-0=-1=
+1-21=22=1101000-1-
+11=00222-=100--

2022/input/day25-1

@@ -0,0 +1,13 @@
+1=-0-2
+12111
+2=0=
+21
+2=01
+111
+20012
+112
+1=-1=
+1-12
+12
+1=
+122

2022/src/day02.scala

@@ -30,7 +30,7 @@ def readCode(opponent: String) = opponent match
   case "B" => Paper
   case "C" => Scissors
 
-def scores(input: String, strategy: (Position, String) => Position): IterableOnce[Int] =
+def scores(input: String, strategy: (Position, String) => Position): Iterator[Int] =
   for case s"$x $y" <- input.linesIterator yield
     val opponent = readCode(x)
     score(opponent, strategy(opponent, y))

2022/src/day25.scala

@@ -0,0 +1,41 @@
+package day25
+
+import locations.Directory.currentDir
+import inputs.Input.loadFileSync
+
+@main def part1: Unit =
+  println(s"The solution is ${part1(loadInput())}")
+
+def loadInput(): String = loadFileSync(s"$currentDir/../input/day25")
+
+def part1(input: String): String =
+  challenge(input)
+
+val digitToInt = Map(
+  '0' -> 0,
+  '1' -> 1,
+  '2' -> 2,
+  '-' -> -1,
+  '=' -> -2,
+)
+val intToDigit = digitToInt.map(_.swap)
+
+def showSnafu(value: BigInt): String =
+  val buf = StringBuilder()
+  var v = value
+  while v != 0 do
+    val digit = (v % 5).toInt match
+      case 0 => 0
+      case 1 => 1
+      case 2 => 2
+      case 3 => -2
+      case 4 => -1
+    buf.append(intToDigit(digit))
+    v = (v - digit) / 5
+  buf.reverseInPlace().toString()
+
+def readSnafu(line: String): BigInt =
+  line.foldLeft(BigInt(0)) { (acc, digit) => acc * 5 + digitToInt(digit) }
+
+def challenge(input: String): String =
+  showSnafu(value = input.linesIterator.map(readSnafu).sum)