我有一个单词列表和一个句子列表。 我想知道在哪些句子中可以找到哪些单词。
这是我的代码:
List<string> sentences = new List<string>();
List<string> words = new List<string>();
sentences.Add("Gallia est omnis divisa in partes tres, quarum unam incolunt Belgae, aliam Aquitani, tertiam qui ipsorum lingua Celtae, nostra Galli appellantur.");
sentences.Add("Alea iacta est.");
sentences.Add("Libenter homines id, quod volunt, credunt.");
words.Add("est");
words.Add("homines");
List<string> myResults = sentences
.Where(sentence => words
.Any(word => sentence.Contains(word)))
.ToList();
我需要的是元组列表。用句子和单词在句子中找到。
答案 0 :(得分:7)
首先,我们必须定义什么是单词。假设它是字母和撇号的任意组合。
Regex regex = new Regex(@"[\p{L}']+");
第二,我们应该考虑使用 case 该怎么做。让我们实现不区分大小写例程:
HashSet<string> wordsToFind = new HashSet<string>(StringComparer.OrdinalIgnoreCase) {
"est",
"homines"
};
然后我们可以使用Regex
来匹配句子中的单词,并使用 Linq 查询句子:
代码:
var actualWords = sentences
.Select((text, index) => new {
text = text,
index = index,
words = regex
.Matches(text)
.Cast<Match>()
.Select(match => match.Value)
.ToArray()
})
.SelectMany(item => item.words
.Where(word => wordsToFind.Contains(word))
.Select(word => Tuple.Create(word, item.index + 1)));
string report = string.Join(Environment.NewLine, actualWords);
Console.Write(report);
结果:
(est, 1) // est appears in the 1st sentence
(est, 2) // est appears in the 2nd sentence as well
(homines, 3) // homines appears in the 3d sentence
如果您想用Tuple<string, string>
代替 word ,句子,只需在最后一个{{1}中将Tuple.Create(word, item.index + 1)
换成Tuple.Create(word, item.text)
}
答案 1 :(得分:4)
你只是这个意思吗?
IEnumerable<(string, string)> query =
from sentence in sentences
from word in words
where sentence.Contains(word)
select (sentence, word);
给出:
答案 2 :(得分:3)
您可以尝试这种方式,
var result = from sentence in sentences
from word in words
where sentence.Contains(word)
select Tuple.Create(sentence, word);