clean

2021/src/main/kotlin/Day04.kt

@@ -5,19 +5,24 @@ import be.vandewalleh.aoc.utils.input.Day
 
 @Day
 class Day04 : BaseDay() {
-    private val numbers by lazy { input.lines.value[0].split(',').map { it.toInt() } }
+    private val parts by lazy { input.text.split("\n\n") }
+    private val numbers by lazy { parts[0].split(',').map { it.toInt() } }
     private val boards by lazy {
-        input.text.split("\n\n")
+        parts.drop(1)
-            .drop(1)
             .map { it.lines().map { it.trim().split("\\s+".toRegex()).map { it.toInt() } } }
     }
 
-    private val results by lazy { boards.map { playBoard(it) } }
+    override fun part1() = boards
+        .map { playBoard(it, numbers) }
+        .minByOrNull { it.first }!!
+        .second
 
-    override fun part1() = results.minByOrNull { it.first }!!.second
+    override fun part2() = boards
-    override fun part2() = results.maxByOrNull { it.first }!!.second
+        .map { playBoard(it, numbers) }
+        .maxByOrNull { it.first }!!
+        .second
 
-    private fun playBoard(board: List<List<Int>>): Pair<Int, Int> {
+    private fun playBoard(board: List<List<Int>>, numbers: List<Int>): Pair<Int, Int> {
         for (round in numbers.indices) {
             val usedNumbers = numbers.take(round)
             for (line in board + board[0].indices.map { col -> board.map { it[col] } }) {