swift

swift/.gitignore

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+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

swift/Package.swift

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+// swift-tools-version:5.5
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "my_leetcode",
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .executableTarget(
+            name: "my_leetcode",
+            dependencies: []),
+        .testTarget(
+            name: "my_leetcodeTests",
+            dependencies: ["my_leetcode"]),
+    ]
+)

swift/README.md

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+# my_leetcode
+
+A description of this package.

swift/Sources/my_leetcode/Solution.swift

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+//
+// Created by Huang on 2021/9/30.
+//
+
+import Foundation
+
+class Solution {
+
+    func mySqrt(_ x: Int) -> Int {
+        let x_half = 0.5 * Double(x)
+        var i: UInt64 = Double(x).bitPattern
+        i = 0x5FE6EC85E7DE30DA - (i >> 1)
+        var f: Double = Double.init(bitPattern: i)
+        f = f * (1.5 - x_half * f * f)
+        f = f * (1.5 - x_half * f * f)
+        f = f * (1.5 - x_half * f * f)
+        return Int(1.0 / f)
+    }
+
+    /**
+     1486. 数组异或操作
+     - Parameters:
+       - n: 数量
+       - start: 起点
+     - Returns: 数组异或操作结果
+     */
+    func xorOperation(_ n: Int, _ start: Int) -> Int {
+        return (start & 3) < 2 ? ((n & 1) == 0) ? (n & 3) : (start + 2 * n - 3 + (n & 3)) : ((n & 1) == 0) ? ((start + (n - 1) * 2) ^ (start - 2 + (n & 3))) : (start + 1 - (n & 3))
+    }
+}

swift/Sources/my_leetcode/main.swift

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+print("Hello, world!")

swift/Tests/my_leetcodeTests/my_leetcodeTests.swift

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+import XCTest
+import class Foundation.Bundle
+
+final class my_leetcodeTests: XCTestCase {
+    func testExample() throws {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct
+        // results.
+
+        // Some of the APIs that we use below are available in macOS 10.13 and above.
+        guard #available(macOS 10.13, *) else {
+            return
+        }
+
+        // Mac Catalyst won't have `Process`, but it is supported for executables.
+        #if !targetEnvironment(macCatalyst)
+
+        let fooBinary = productsDirectory.appendingPathComponent("my_leetcode")
+
+        let process = Process()
+        process.executableURL = fooBinary
+
+        let pipe = Pipe()
+        process.standardOutput = pipe
+
+        try process.run()
+        process.waitUntilExit()
+
+        let data = pipe.fileHandleForReading.readDataToEndOfFile()
+        let output = String(data: data, encoding: .utf8)
+
+        XCTAssertEqual(output, "Hello, world!\n")
+        #endif
+    }
+
+    /// Returns path to the built products directory.
+    var productsDirectory: URL {
+      #if os(macOS)
+        for bundle in Bundle.allBundles where bundle.bundlePath.hasSuffix(".xctest") {
+            return bundle.bundleURL.deletingLastPathComponent()
+        }
+        fatalError("couldn't find the products directory")
+      #else
+        return Bundle.main.bundleURL
+      #endif
+    }
+}