Question

伙计我知道这可能是一个天真的问题，但我得问。我有一串字符串List<string> lstPets = new List<string> { "dog", "cat","horse","parrot" };

一个字符串

string paragraph = "This is a test script to test whether a dog exists or not";

现在我必须编写一个linq查询来查找“paragrah”中是否出现“lstPets”。

提前致谢。：）

Answer 1

var lstPets = new List<string> { "dog", "cat","horse","parrot" };

string paragraph = "This is a test script to test whether a dog exists or not";

var containsAny = lstPets.Any(paragraph.Contains);

或者可能更宽容：

var containsAny = lstPets.Any(pet => paragraph.Contains(pet, StringComparison.OrdinalIgnoreCase));

Answer 2

var sentenceQuery = from item in paragraph
                        let w = item .Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' },                                          StringSplitOptions.RemoveEmptyEntries)  
                        where w.Distinct().Intersect(IsPets).Count() == IsPets.Count()  
                        select item ;         
    foreach (string str in sentenceQuery)  
    {  
        Console.WriteLine(str);  
    }

Answer 3

尝试代码

var countres = lstPets.Where(c => paragraph.Contains(c)).ToList().Count() > 0 ? true : false;

Linq查询C＃（字符串数组中的多次出现）

3 个答案: