c# - 从字符串中拆分并删除重复项

Question

我想拆分给定的字符串并从该字符串中删除重复项。就像我有以下字符串:

This is my first post in stack overflow, I am very new in development and I did not have much more idea about the how to post the question.

现在我想用空格拆分整个字符串，新数组将没有重复项。

我该怎么做？

Answer 1

"This is my first post in stack overflow, I am very new in development and I did not have much more idea about the how to post the question."
    .Split()                       // splits using all white space characters as delimiters
    .Where(x => x != string.Empty) // removes an empty string if present (caused by multiple spaces next to each other)
    .Distinct()                    // removes duplicates

Distinct()和 Where()是 LINQ 扩展方法，所以你必须有 using System.Linq;在你的源文件中。

以上代码将返回 IEnumerable<string> 的一个实例.您应该能够使用它执行所需的大多数操作。如果你真的需要一个数组，你可以追加.ToArray()声明。