Question

我想创建一个可以计算给定文本句子数的游乐场。

let input = "That would be the text . it hast 3. periods. "

func sentencecount() {
    let periods = CharacterSet.whitespacesAndNewlines.union(.punctuationCharacters)
    let periods = input.components(separatedBy: spaces)
    let periods2  = Int (words.count)
    print ("The Average Sentence length is \(periods2)") 
}
sentencecount()

Answer 1

您可以使用enumerateSubstrings(in: Range)并使用选项.bySentences：

let input = "Hello World !!! That would be the text. It hast 3 periods."
var sentences: [String] = []
input.enumerateSubstrings(in: input.startIndex..., options: .bySentences) { (string, range, enclosingRamge, stop) in
    sentences.append(string!)
}

另一种方法是使用子串数组而不是字符串：

var sentences: [Substring] = []
input.enumerateSubstrings(in: input.startIndex..., options: .bySentences) { (string, range, enclosingRamge, stop) in
    sentences.append(input[range])
}

print(sentences)   // "["Hello World !!! ", "That would be the text. ", "It hast 3 periods."]\n"
print(sentences.count)  // "3\n"

Answer 2

这应该有效：

   let input = "That would be the text . it hast 3. periods. "
   let occurrencies = input.characters.filter { $0 == "." || $0 == "?" }.count
   print(occurrencies)
   //result 3

Answer 3

只需在charset中添加您要区分句子的字符：

我现在假设? . ,：

    let input = "That would be the text. it hast 3? periods."
    let charset = CharacterSet(charactersIn: ".?,")
    let arr = input.components(separatedBy: charset)
    let count = arr.count - 1

此处arr将是：

["That would be the text", " it hast 3", " periods", ""]

将计数减少1，得到实际句子。

注意：如果您不想考虑" , "，请将其从charset移除。

Answer 4

据我所知，您需要使用它们进行拆分。并修剪空格如下：

func sentencecount () {

    let result = input.trimmingCharacters(in: .whitespaces).split(separator: ".")

   print ("The Average Sentence length is \(result.count)") // 3
}

祝你好运！

如何计算Swift中给定文本中的句子数？

4 个答案: