Prepare for other years

2020-12-30 18:01:52 +01:00
parent 522618d106
commit 4a90257257
81 changed files with 277 additions and 253 deletions
@@ -0,0 +1,24 @@
+package be.vandewalleh.aoc.days
+
+import be.vandewalleh.aoc.utils.input.Day
+import be.vandewalleh.aoc.utils.input.Input
+import be.vandewalleh.aoc.utils.input.Text
+import org.eclipse.collections.impl.factory.primitive.CharBags
+
+@Day(6)
+class Day06(@Text val input: Input<String>) {
+
+    private val groups = input.value.split("\n\n")
+
+    fun part1() = groups.sumBy { it.replace("\n", "").toCharArray().toSet().size }
+
+    fun part2() = groups.sumBy {
+        val group = it.split("\n")
+        val bag = CharBags.mutable.empty()
+
+        group.forEach { chars: String -> chars.forEach { bag.add(it) } }
+
+        bag.selectByOccurrences { group.size == it }.toSet().size()
+    }
+
+}