1 files changed, 0 insertions, 46 deletions
diff --git a/2021-kotlin/src/Day14.kt b/2021-kotlin/src/Day14.kt
deleted file mode 100644
index 920ea9e..0000000
--- a/2021-kotlin/src/Day14.kt
+++ /dev/null
@@ -1,46 +0,0 @@
-object Day14 {
-    private fun getPolymerLetterCounts(input: List<String>, iterations: Int): Long {
-        val template = input.first()
-        val rules = input.drop(2).associate {
-            val (pattern, replacement) = it.split(" -> ")
-            (pattern[0] to pattern[1]) to replacement.first()
-        }
-
-        var pairCounts = template
-            .zipWithNext()
-            .groupingBy { it }
-            .eachCount()
-            .mapValues { (_, v) -> v.toLong() }
-
-        repeat(iterations) {
-            val newCounts = mutableMapOf<Pair<Char, Char>, Long>()
-
-            pairCounts.forEach { (pair, count) ->
-                newCounts.merge(rules[pair]!! to pair.second, count, Long::plus)
-                newCounts.merge(pair.first to rules[pair]!!, count, Long::plus)
-            }
-
-            pairCounts = newCounts
-        }
-
-        val letterCounts = mutableMapOf<Char, Long>()
-        pairCounts.forEach { (pair, count) -> letterCounts.merge(pair.second, count, Long::plus) }
-        letterCounts.merge(template.first(), 1, Long::plus)
-
-        return letterCounts.values.let { it.maxOrNull()!! - it.minOrNull()!! }
-    }
-
-    fun part1(input: List<String>): Long = getPolymerLetterCounts(input, 10)
-
-    fun part2(input: List<String>): Long = getPolymerLetterCounts(input, 40)
-}
-
-fun main() {
-    val testInput = readInputAsLines("Day14_test")
-    check(Day14.part1(testInput) == 1588L)
-    check(Day14.part2(testInput) == 2188189693529L)
-
-    val input = readInputAsLines("Day14")
-    println(Day14.part1(input))
-    println(Day14.part2(input))
-}