如何编写Lambda表达式以从句子列表中选择不同的单词

Question

如何编写lambda表达式以从以下句子列表中获取不同的单词？

string[] famousquotes =
    {
        "Advertising is legalized lying",
        "Advertising is the greatest art form of the twentieth century"
    };

var distinctWords = famousquotes.Select(s => s.Split(' ')).

我希望输出像

Advertising
is
legalized
lying
the 
greatest 
art 
form 
of
twentieth 
century

Answer 1

var distinctWords = famousquotes
                         .SelectMany(s => 
                             s.Split(new []{' '}, 
                             StringSplitOptions.RemoveEmptyEntries))
                         .Distinct();

使用SelectMany获取所有基础字符串。然后使用Distinct做你想做的事。

Answer 2

没什么特别的。一个非常简单的伎俩：）

var result = String.Join(" ",famousquotes).Split(' ').Distinct();