[英]How to use Regex to split a string AND include whitespace
I can't seem to find (or write) a simple way of splitting the following sentence into words and assigning a word to the whitespace between the letters. 我似乎找不到(或编写)将以下句子拆分为单词并将单词分配给字母之间的空白的简单方法。 (VS 2010, C#, .net4.0).
(VS 2010,C#、. net4.0)。
String text = "This is a test.";
Desired result:
[0] = This
[1] = " "
[2] = is
[3] = " "
[4] = a
[5] = " "
[6] = test.
The closest I have come is: 我最接近的是:
string[] words = Regex.Split(text, @"\s");
but ofcourse, this drops the whitespace. 但当然,这会删除空白。
Suggestions are appreciated. 建议表示赞赏。 Thanks
谢谢
Edit: There may be one or more spaces between the words. 编辑:单词之间可能有一个或多个空格。 I would like all spaces between the words to be returned as a "word" itself (with all spaces being placed in that "word").
我希望单词之间的所有空格都作为“单词”本身返回(所有空格都放在该“单词”中)。 eg, if 5 spaces between a word would be.
例如,如果一个单词之间有5个空格。
String spaceword = " "; 字符串spaceword =“”; <--This is not showing correctly, there should be a string of 5 spaces.
<-此显示不正确,应包含5个字符串。
You can use LINQ
to add spaces manually between them: 您可以使用
LINQ
在它们之间手动添加空格:
var parts = text.Split(new[]{ ' ' }, StringSplitOptions.RemoveEmptyEntries);
var result = parts.SelectMany((x,idx) => idx != parts.Length - 1
? new[] { x, " " }
: new[] { x }).ToList();
Change your pattern to (\\s+)
: 将模式更改为
(\\s+)
:
String text = "This is a test.";
string[] words = Regex.Split(text, @"(\s+)");
for(int i =0; i < words.Length;i++)
{
Console.WriteLine(i.ToString() + "," + words[i].Length.ToString() + " = " + words[i]);
}
Here's the output: 这是输出:
0,4 = This
1,8 =
2,2 = is
3,1 =
4,1 = a
5,3 =
6,5 = test.
You can try this regex, \\w+|\\s+
which uses or operator |
您可以尝试使用或运算符
|
\\w+|\\s+
正则表达式|
var arr = Regex.Matches(text, @"\S+|\s+").Cast<Match>()
.Select(i => i.Value)
.ToArray();
It just matches both words and spaces and some LINQ stuff is being used so arr
is just a String
Array
它只匹配单词和空格,并且使用了一些LINQ东西,因此
arr
只是一个String
Array
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