获取包含在字符串和数组中的短语列表

Question

给定一个列表：

let words = ["Apple", "the Banana", "Cherry"]

和一个字符串：

let string = "The Apple was eaten before the Banana"

是否可以很容易地获得数组中字符串中短语的列表？

例如，上述结果为：

let result = ["Apple", "the Banana"]

以下内容很接近，但只返回true或false：

let combinedResult = words.contains(where: string.contains)

Answer 1

您可以过滤您的数组，条件是它存在于字符串中，如下所示：

let words = ["Apple", "the Banana", "Cherry"]
let string = "The Apple was eaten before the Banana"
print(words.filter { string.contains($0) }) // ["Apple", "the Banana"]

Answer 2

对于我的用例，运行需要27秒

var words: [String] { Words.all.filter { self.contains($0) } }

而这需要1.5秒：

var words: [String] {
var words = [String]()
for word in self.components(separatedBy:" ") {
if WordDictionary.all[word] != nil {
words.append(word)
}
}
return words
}