在swift中按字母顺序排序数组

我是swift的新手。我正在尝试一个示例应用程序，其中我需要按字母顺序实现数组的排序。我得到json数据，我在数组中添加标题。现在我想按字母顺序排序。这是我的代码.....

I am new to swift.I am trying one sample app in which I need to implement the sorting of an array in alphabetical order.I getting the json data and I am adding the titles in the array.Now i would like to sort that alphabetically.Here is my code .....

func updateSearchResults(data: NSData?)
{
    do
    {
            let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .AllowFragments)

            if let blogs: NSArray = json["results"] as? [AnyObject] {
                print(blogs)
                for blog in blogs {
                    if let name = blog["original_title"] as? String {
                        names.addObject(name)
                    }
                }
                print(names)
                **let sortedArray = sorted(names, {
                (str1: String, str2: String) -> Bool in
                return str1.toInt() < str2.toInt()** // Here I am getting the Error Message
                })

            }
    }
    catch {
        print("error serializing JSON: \(error)")
    }
}

我得到的错误消息是无法使用类型'的参数列表调用'sorted'（NSMutableArray，（ String，String） - > Bool）'

我尝试了很多来实现这个目标，但我找不到解决方案。
任何人都可以帮我解决这个问题。
在此先感谢。

I tried a lot to achieve this but I didn't find the solution. Can anyone help me to resolve this issue. Thanks In Advance.