如何在句子中找到给定单词的出现次数？

Question

以下是查找句子中给定单词出现次数的代码。

static void Main(string[] args)
{
    string str;
    string word;
    int count = 0;
    str = Console.ReadLine();
    word = Console.ReadLine();
    string[] str1 = str.Split(' ','.');
    for (int i = 0; i < str1.Length; i++)
    {
        if (str1[i].Equals(word))
        {                   
            count++;
        }                       
    }
    Console.WriteLine("No of occurrence of a word:" +count);
    Console.ReadLine();

}

有没有最佳和优化的方法对此进行编码..？

Answer 1

var occurences = yourString.Split().Count(word => word == wordToMatch);

Answer 2

这样：

var query = from x in "String that contain words".Split().ToList()
            group x by x into G
            let Count = G.Count()
            select new {Value = G.Key, Count = count};