init

.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
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Package.resolved

@@ -0,0 +1,24 @@
+{
+  "originHash" : "23baadbc515ba47de84bba41a92b072f7e94d25235c8c91b5566b691c2085e3c",
+  "pins" : [
+    {
+      "identity" : "swift-syntax",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swiftlang/swift-syntax.git",
+      "state" : {
+        "revision" : "515f79b522918f83483068d99c68daeb5116342d",
+        "version" : "600.0.0-prerelease-2024-08-14"
+      }
+    },
+    {
+      "identity" : "swift-testing",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swiftlang/swift-testing.git",
+      "state" : {
+        "revision" : "c55848b2aa4b29a4df542b235dfdd792a6fbe341",
+        "version" : "0.12.0"
+      }
+    }
+  ],
+  "version" : 3
+}

Package.swift

@@ -0,0 +1,26 @@
+// swift-tools-version: 6.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "aoc2022",
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "aoc2022",
+            targets: ["aoc2022"]),
+    ],
+    dependencies: [
+      .package(url: "https://github.com/swiftlang/swift-testing.git", from: "0.12.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "aoc2022"),
+        .testTarget(
+            name: "aoc2022Tests",
+            dependencies: ["aoc2022", .product(name: "Testing", package: "swift-testing")]),
+    ]
+)

Sources/aoc2022/aoc2022.swift

@@ -0,0 +1,5 @@
+// The Swift Programming Language
+// https://docs.swift.org/swift-book
+enum Err: Error {
+    case NotImplemented
+}

Sources/aoc2022/day01.swift

@@ -0,0 +1,25 @@
+struct Day01 {
+    static func part1(_ input: String) -> Int {
+        let elves = input
+          .split(separator: "\n\n")
+          .map({ elf in
+                   elf.split(separator: "\n")
+                     .map({snack in Int(snack)!})
+                     .reduce(0, +)
+               })
+        return elves.max()!
+    }
+
+    static func part2(_ input: String) -> Int {
+      let elves = input
+          .split(separator: "\n\n")
+          .map({ elf in
+                   elf.split(separator: "\n")
+                     .map({snack in Int(snack)!})
+                     .reduce(0, +)
+               })
+          .sorted(by: >)
+
+      return elves[0..<3].reduce(0,+)
+    }
+}

Sources/aoc2022/day02.swift

@@ -0,0 +1,127 @@
+struct Day02 {
+    enum JankenResponse: Character, RawRepresentable {
+        case rock = "X"
+        case paper = "Y"
+        case scissors = "Z"
+
+        func getResult(against: JankenPrompt) -> JankenResult {
+            switch self {
+            case .rock:
+                switch against {
+                case .rock:
+                    return .tie
+                case .paper:
+                    return .lose
+                case .scissors:
+                    return .win
+                }
+            case .paper:
+                switch against {
+                case .rock:
+                    return .win
+                case .paper:
+                    return .tie
+                case .scissors:
+                    return .lose
+                }
+            case .scissors:
+                switch against {
+                case .rock:
+                    return .lose
+                case .paper:
+                    return .win
+                case .scissors:
+                    return .tie
+                }
+            }
+        }
+
+        func getPointVal() -> Int {
+            return switch self {
+            case .rock:
+                1
+            case .paper:
+                2
+            case .scissors:
+                3
+            }
+        }
+    }
+
+    enum JankenPrompt: Character, RawRepresentable {
+        case rock = "A"
+        case paper = "B"
+        case scissors = "C"
+
+        func getResponse(result: JankenResult) -> JankenResponse {
+            switch self {
+            case .rock:
+                switch result {
+                case .win:
+                    return .paper
+                case .tie:
+                    return .rock
+                case .lose:
+                    return .scissors
+                }
+            case .paper:
+                switch result {
+                case .win:
+                    return .scissors
+                case .tie:
+                    return .paper
+                case .lose:
+                    return .rock
+                }
+            case .scissors:
+                switch result {
+                case .win:
+                    return .rock
+                case .tie:
+                    return .scissors
+                case .lose:
+                    return .paper
+                }
+            }
+        }
+    }
+
+    enum JankenResult: Int {
+        case win = 6
+        case lose = 0
+        case tie = 3
+
+        init(char: Character) {
+            switch char {
+            case "X":
+                self = .lose
+            case "Y":
+                self = .tie
+            case "Z":
+                self = .win
+            default:
+                fatalError("\(char) is not a valid JankenResult")
+            }
+        }
+    }
+
+    static func part1(_ input: String) -> Int {
+        let roundScores = input.split(separator: "\n")
+          .map({ round in
+                   let prompt = JankenPrompt(rawValue: round.first!)!
+                   let response = JankenResponse(rawValue: round.last!)!
+                   return response.getResult(against: prompt).rawValue + response.getPointVal()
+               })
+        return roundScores.reduce(0, +)
+    }
+
+    static func part2(_ input: String) -> Int {
+        let roundScores = input.split(separator: "\n")
+          .map({ round in
+                   let prompt = JankenPrompt(rawValue: round.first!)!
+                   let result = JankenResult(char: round.last!)
+                   return prompt.getResponse(result: result).getPointVal() + result.rawValue
+               })
+        return roundScores.reduce(0, +)
+    }
+}

Sources/aoc2022/day03.swift

@@ -0,0 +1,26 @@
+struct Day03 {
+    static func part1(_ input: String) -> Int {
+        let itemPriority = input.split(separator: "\n")
+          .map({ sack in
+                   let start = sack.startIndex
+                   let end = sack.endIndex
+                   let mid = ((end - start) / 2) + start
+                   return sack[start..<mid].filter(sack[mid..<end].contains).first!
+               })
+          .map(charToPriority)
+
+        return itemPriority.reduce(0, +)
+    }
+
+    static func charToPriority(_ char: Character) -> Int {
+        let ascii = Int(char.asciiValue!)
+        switch ascii {
+        case 97...122:
+            return ascii - 96
+        case 65...90:
+            return ascii - (64 - 26)
+        default:
+            fatalError("\(char) is not a valid character!")
+        }
+    }
+}

Tests/aoc2022Tests/day01.swift

@@ -0,0 +1,66 @@
+import Testing
+@testable import aoc2022
+
+@Suite("Day 1 Tests") struct Day01Tests {
+    @Test("Part 1 Test") func testPart1() {
+        let input = """
+            1000
+            2000
+            3000
+
+            4000
+
+            5000
+            6000
+
+            7000
+            8000
+            9000
+
+            10000
+            """
+
+        let out = Day01.part1(input)
+
+        #expect(24000 == out, "\(out) should be 24000")
+    }
+
+    @Test("Part 1 Actual") func runPart1() throws {
+        let input = try String(contentsOfFile: "Input/day01.txt", encoding: .utf8)
+
+        let out = Day01.part1(input)
+
+        #expect(67016 == out, "\(out) should be 67016")
+    }
+
+    @Test("Part 2 Test") func testPart2() {
+        let input = """
+            1000
+            2000
+            3000
+
+            4000
+
+            5000
+            6000
+
+            7000
+            8000
+            9000
+
+            10000
+            """
+
+        let out = Day01.part2(input)
+
+        #expect(45000 == out, "\(out) should be 45000")
+    }
+
+    @Test("Part 2 Actual") func runPart2() throws {
+        let input = try String(contentsOfFile: "Input/day01.txt", encoding: .utf8)
+
+        let out = Day01.part2(input)
+
+        #expect(200116 == out, "\(out) should be 200116")
+    }
+}

Tests/aoc2022Tests/day02.swift

@@ -0,0 +1,36 @@
+import Testing
+@testable import aoc2022
+
+@Suite("Day 2") struct Day02Test {
+    @Test("Part 1 Test") func testPart1() {
+        let input = """
+          A Y
+          B X
+          C Z
+          """
+        let out = Day02.part1(input)
+        #expect(out == 15)
+    }
+
+    @Test("Part 1 actual") func runPart1() throws {
+        let input = try String(contentsOfFile: "Input/day02.txt")
+        let out = Day02.part1(input)
+        #expect(out == 12740)
+    }
+
+    @Test("Part 2 Test") func testPart2() {
+        let input = """
+          A Y
+          B X
+          C Z
+          """
+        let out = Day02.part2(input)
+        #expect(out == 12)
+    }
+
+    @Test("Part 2 actual") func runPart2() throws {
+        let input = try String(contentsOfFile: "Input/day02.txt")
+        let out = Day02.part2(input)
+        #expect(out == 11980)
+    }
+}

Tests/aoc2022Tests/day03.swift

@@ -0,0 +1,23 @@
+import Testing
+@testable import aoc2022
+
+@Suite("Day 3 Tests") struct Day03Test {
+    @Test("Part 1 Test") func testPart1() {
+        let input = """
+          vJrwpWtwJgWrhcsFMMfFFhFp
+          jqHRNqRjqzjGDLGLrsFMfFZSrLrFZsSL
+          PmmdzqPrVvPwwTWBwg
+          wMqvLMZHhHMvwLHjbvcjnnSBnvTQFn
+          ttgJtRGJQctTZtZT
+          CrZsJsPPZsGzwwsLwLmpwMDw
+          """
+        let out = Day03.part1(input)
+        #expect(out == 157)
+    }
+
+    @Test("Part 1 Actual") func runPart1() throws {
+        let input = try String(contentsOfFile: "Input/day03.txt")
+        let out = Day03.part1(input)
+        #expect(out == 8176)
+    }
+}