如何用LINQ计算字符串数组中的单词？

Question

给定像{"one two","three four five"}这样的数组,你如何使用LINQ计算其中包含的单词总数？

Answer 1

你可以用SelectMany做到这一点:

var stringArray = new[] {"one two", "three four five"};
var numWords = stringArray.SelectMany(segment => segment.Split(' ')).Count();

SelectMany将生成的序列展平为一个序列,然后为字符串数组的每个项目投射一个空格分割...

Answer 2

我认为Sum更具可读性:

var list = new string[] { "1", "2", "3 4 5" };
var count = list.Sum(words => words.Split().Length);