Day03 - Part 1

Author: ath0s

src/main/kotlin/Day03.kt

@@ -0,0 +1,31 @@
+class Day03 : Day {
+    override fun partOne(filename: String, verbose: Boolean): Any {
+        val banks = filename.asPath().parseMatrix()
+        val maxJoltage = banks.map { bank ->
+            bank.foldIndexed(0L) { index, acc, current ->
+                if (index < bank.lastIndex) {
+                    bank.drop(index + 1).fold(acc) { acc, next ->
+                        maxOf(acc, "$current$next".toLong())
+                    }
+                } else {
+                    acc
+                }
+            }
+        }
+        if (verbose) {
+            maxJoltage.forEach {
+                println(it)
+            }
+        }
+        return maxJoltage.sum()
+    }
+
+    override fun partTwo(filename: String, verbose: Boolean): Any {
+        TODO("Not yet implemented")
+    }
+
+    companion object : Day.Main("Day03.txt") {
+        @JvmStatic
+        fun main(args: Array<String>) = main()
+    }
+}