07a

Sources/07/07.swift

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+//
+//  File.swift
+//
+//
+//  Created by Max Nuding on 05.12.21.
+//
+
+import Foundation
+import Runner
+
+struct Day07: Runnable {
+    let inputPath: String
+    
+    func run() {
+        let input = try! String(contentsOfFile: inputPath)
+        let horizontalPositions = input
+            .trimmingCharacters(in: .newlines)
+            .components(separatedBy: ",")
+            .map { Int($0)! }
+        run(horizontalPositions: horizontalPositions)
+    }
+    
+    func run(horizontalPositions: [Int]) {
+        let median = horizontalPositions.sorted()[horizontalPositions.count / 2]
+        let distancesToMedian = horizontalPositions.map { abs(median - $0) }
+        let toalFuel = distancesToMedian.reduce(0,+)
+        print(toalFuel)
+    }
+}

Sources/07/main.swift

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+//
+//  File.swift
+//  
+//
+//  Created by Max Nuding on 05.12.21.
+//
+
+import Foundation
+import Runner
+
+Runner(target: Day07.self, day: "07", isTest: false).run()