在Xcode/Swift中实现替换和插入按钮

@IBAction func replaceButtonTapped(_ sender: UIButton) {
    // 在这里实现替换按钮的逻辑
}

@IBAction func insertButtonTapped(_ sender: UIButton) {
    // 在这里实现插入按钮的逻辑
}

@IBAction func replaceButtonTapped(_ sender: UIButton) {
    var text = "Hello, World!"
    text = text.replacingOccurrences(of: "Hello", with: "Hi")
    print(text) // 输出: Hi, World!
}

@IBAction func insertButtonTapped(_ sender: UIButton) {
    var text = "Hello, World!"
    text.insert(contentsOf: " Awesome", at: text.index(text.startIndex, offsetBy: 7))
    print(text) // 输出: Hello, Awesome World!
}