用重音字符反转一个字符串？

So I saw Jon's skeet video and there was a code sample :

所以我看到了Jon的双向飞碟视频，并且有一个代码示例：

There should have been a problem with the é - after reversing but I guess it fails on .net2 (IMHO), anyway it did work for me and I did see the correct reversed string.

应该有一个问题é - 在倒车之后但是我猜它在.net2（恕我直言）上失败了，无论如何它确实对我有效并且我确实看到了正确的反转字符串。

char[] a="Les Misérables".ToCharArray();
Array.Reverse(a);
string n= new string(a);
Console.WriteLine (n); //selbarésiM seL

But I took it further:

但我进一步说：

In Hebrew there is the "Alef" char : א

在希伯来语中有“Alef”字符：א

and I can add punctuation like : אֳ ( which I believe consists of 2 chars - yet displayed as one.)

我可以添加标点符号：אֳ（我认为它由2个字符组成 - 但显示为一个。）

But now look what happens :

但现在看看会发生什么：

char[] a="Les Misאֳrables".ToCharArray();
Array.Reverse(a);
string n= new string(a);
Console.WriteLine (n); //selbarֳאsiM seL

There was a split...

有一个分裂......

I can understand why it is happening :

我能理解为什么会这样：

Console.WriteLine ("אֳ".Length); //2

So I was wondering if there's a workaround for this kind of issue in C# ( or should I build my own mechanism....)

所以我想知道在C＃中是否存在针对此类问题的解决方法（或者我应该构建自己的机制......）

2 个解决方案

#1

The problem is that Array.Reverse isn't aware that certain sequences of char values may combine to form a single character, or "grapheme", and thus shouldn't be reversed. You have to use something that understands Unicode combining character sequences, like TextElementEnumerator:

问题是Array.Reverse不知道某些char值序列可能组合形成一个单独的字符，或“grapheme”，因此不应该反转。您必须使用能够理解Unicode组合字符序列的内容，例如TextElementEnumerator：

// using System.Globalization;

TextElementEnumerator enumerator =
    StringInfo.GetTextElementEnumerator("Les Misאֳrables");

List<string> elements = new List<string>();
while (enumerator.MoveNext())
    elements.Add(enumerator.GetTextElement());

elements.Reverse();
string reversed = string.Concat(elements);  // selbarאֳsiM seL

#2

If you made the extension

如果你做了扩展

public static IEnumerable<string> ToTextElements(this string source)
{
    var e = StringInfo.GetTextElementEnumerator(source)
    while (e.MoveNext())
    {
        yield return e.GetTextElement();
    }
}

you could do,

你能做到的，

const string a = "AnyStringYouLike";
var aReversed = string.Concat(a.ToTextElements().Reverse());

#1

// using System.Globalization;

TextElementEnumerator enumerator =
    StringInfo.GetTextElementEnumerator("Les Misאֳrables");

List<string> elements = new List<string>();
while (enumerator.MoveNext())
    elements.Add(enumerator.GetTextElement());

elements.Reverse();
string reversed = string.Concat(elements);  // selbarאֳsiM seL

#2