Day01

days/src/main/kotlin/Day01.kt

@@ -0,0 +1,33 @@
+package be.vandewalleh.aoc.days
+
+import be.vandewalleh.aoc.utils.Resources
+
+object Day01 {
+
+    fun part1(list: List<Int>): Int? {
+        list.forEach { a ->
+            list.forEach { b ->
+                if (a + b == 2020) return a * b
+            }
+        }
+        return null
+    }
+
+    fun part2(list: List<Int>): Int? {
+        list.forEach { a ->
+            list.forEach { b ->
+                list.forEach { c ->
+                    if (a + b + c == 2020) return a * b * c
+                }
+            }
+        }
+        return null
+    }
+
+}
+
+fun main() {
+    val input = Resources.ints("day01.txt").toList()
+    println(Day01.part1(input))
+    println(Day01.part2(input))
+}