C# 获取文本中出现的单词数

这可以用C Linq实现吗

例如：

彼得·派珀挑选了一包腌制的辣椒，这些辣椒很甜，是彼得的播种者，彼得想

结果:

peter 3
peppers 2
picked 1
...

我可以用嵌套的for循环来实现它，但我认为使用Linq有一种更简洁、资源更少的方法

"peter piper picked a pack of pickled peppers,the peppers 
were sweet and sower for peter, peter thought"
.Split(' ', ',').Count(x=>x == "peter");

---

这是给彼得的，其他人也一样。

这应该可以做到：

var str = "peter piper picked a pack of pickled peppers, the peppers were sweet and sower for peter, peter thought";
var counts = str
    .Split(' ', ',')
    .GroupBy(s => s)
    .ToDictionary(g => g.Key, g => g.Count());

---

现在，字典计数包含句子中的单词计数对。例如，计数[peter]为3。

我不确定它是否更高效或资源更轻，但您可以：

string[] words = "peter piper picked a pack of pickled peppers, the peppers were sweet and sower for peter, peter thought".Split(" ");
int peter = words.Count(x=>x == "peter");
int peppers = words.Count(x=>x == "peppers");
// etc

您可以使用GroupBy：

string original = "peter piper picked a pack of pickled peppers, the peppers were sweet and sower for peter, peter thought";

var words = original.Split(new[] {' ',','}, StringSplitOptions.RemoveEmptyEntries);
var groups = words.GroupBy(w => w);

foreach(var item in groups)
    Console.WriteLine("Word {0}: {1}", item.Key, item.Count());

---

您可以使用Regex.Splitstr、@\W.GroupBy。。。为了简化断字。收缩会很麻烦，所以可能是[，；：！？\s-]或其他什么。你会得到字符串的计数。空的，考虑到这一点，正如你所拥有的，原始字符串中的部分…@ReedCopsey因为OP说他可以在循环中完成它，我几乎可以肯定他正在寻找调用Split后的部分。。。。不过，感谢您提及空字符串！

string original = "peter piper picked a pack of pickled peppers, the peppers were sweet and sower for peter, peter thought";

var words = original.Split(new[] {' ',','}, StringSplitOptions.RemoveEmptyEntries);
var groups = words.GroupBy(w => w);

foreach(var item in groups)
    Console.WriteLine("Word {0}: {1}", item.Key, item.Count());