1 files changed, 0 insertions, 62 deletions
diff --git a/2021-kotlin/src/Day05.kt b/2021-kotlin/src/Day05.kt
deleted file mode 100644
index 2c5e219..0000000
--- a/2021-kotlin/src/Day05.kt
+++ /dev/null
@@ -1,62 +0,0 @@
-import kotlin.math.absoluteValue
-import kotlin.math.max
-import kotlin.math.sign
-
-object Day05 {
-    private data class Line(val start: Pos2D, val end: Pos2D) {
-        companion object {
-            fun fromString(input: String): Line {
-                val (start, end) = input.split(" -> ").map { coordinateString ->
-                    val (x, y) = coordinateString.split(",").map(String::toInt)
-                    Pos2D(x, y)
-                }
-
-                return Line(start, end)
-            }
-        }
-
-        val isHorizontalOrVertical: Boolean
-            get() = start.x == end.x || start.y == end.y
-
-        val isDiagonal: Boolean
-            get() = (end.x - start.x).absoluteValue == (end.y - start.y).absoluteValue
-
-        val pointSequence: Sequence<Pos2D>
-            get() = sequence {
-                val xOffset = end.x - start.x
-                val yOffset = end.y - start.y
-
-                for (s in 0..max(xOffset.absoluteValue, yOffset.absoluteValue)) {
-                    val x = start.x + s * xOffset.sign
-                    val y = start.y + s * yOffset.sign
-
-                    yield(Pos2D(x, y))
-                }
-            }
-    }
-
-    private fun helper(input: List<String>, linePredicate: (line: Line) -> Boolean) = input
-        .asSequence()
-        .map(Line::fromString)
-        .filter(linePredicate)
-        .flatMap(Line::pointSequence)
-        .groupingBy { it }
-        .eachCount()
-        .values
-        .count { it >= 2 }
-
-    fun part1(input: List<String>): Int = helper(input, Line::isHorizontalOrVertical)
-
-    fun part2(input: List<String>): Int = helper(input) { it.isHorizontalOrVertical || it.isDiagonal }
-
-}
-
-fun main() {
-    val testInput = readInputAsLines("Day05_test")
-    check(Day05.part1(testInput) == 5)
-    check(Day05.part2(testInput) == 12)
-
-    val input = readInputAsLines("Day05")
-    println(Day05.part1(input))
-    println(Day05.part2(input))
-}