Add 2024, day 3, part 1

Author: danielctull

Year2024/Sources/Day03.swift

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+
+import Advent
+import RegexBuilder
+
+public enum Day03: Day {
+
+    public static let title = "Mull It Over"
+
+    private static let regex = Regex {
+        "mul("
+        TryCapture.integer
+        ","
+        TryCapture.integer
+        ")"
+    }
+
+    public static func part1(_ input: Input) throws -> Int {
+        input.string.matches(of: regex).map { match in
+            match.output.1 * match.output.2
+        }
+        .sum
+    }
+
+    public static func part2(_ input: Input) throws -> Int {
+        0
+    }
+}

Year2024/Tests/Day03Tests.swift

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+
+import Advent
+import Year2024
+import XCTest
+
+final class Day03Tests: XCTestCase {
+
+    func testPart1Examples() throws {
+        XCTAssertEqual(try Day03.part1([
+            "xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))"
+        ]), 161)
+    }
+
+    func testPart1Puzzle() throws {
+        let input = try Bundle.module.input(named: "Day03")
+        XCTAssertEqual(try Day03.part1(input), 179571322)
+    }
+
+    func testPart2Examples() throws {
+        XCTAssertEqual(try Day03.part2([]), 0)
+    }
+
+    func testPart2Puzzle() throws {
+        let input = try Bundle.module.input(named: "Day03")
+        XCTAssertEqual(try Day03.part2(input), 0)
+    }
+}