Question

我想在字符串中找到所有匹配的“\ abc / something / \ abc /”忽略某些部分：

如果我的字符串是：

string str = @"\abc/something\abc/\abc/something\abc/;

我应该如何编写模式以便获得两个匹配的\ abc / something \ abc /？

由于在这种情况下使用^和$来定义开头和结尾不会起作用，因为整个字符串的开头和结尾都是这样。

Answer 1

您可以在此处试用各种正则表达式：http://regexstorm.net/tester

但看起来你应该匹配=IF(A3="tf06",F3,"")

Answer 2

CaptureCollection应该获得一组中的所有匹配，
一次通过。

此(?:.*?(\\\w+/))+或此(?:(\\\w+/)|.)+
举个例子。

 (?:
      .*? 
      ( \\ \w+ / )                  # (1)
 )+

C＃

string str = @"\\adbc/\\abrc/";
//Regex RxAbc = new Regex(@"(?:(\\\w+/)|.)+");
Regex RxAbc = new Regex(@"(?:.*?(\\\w+/))+");
Match _mAbc = RxAbc.Match(str);
if (_mAbc.Success)
{
    CaptureCollection cc = _mAbc.Groups[1].Captures;
    for (int i = 0; i < cc.Count; i++)
    {
        Console.WriteLine("{0}", cc[i].Value);
    }
}

输出：

\adbc/
\abrc/

编辑 - 来自评论another example that is like this: @"\abc/something\abc/\abc/somethingELSE\abc/, and return 2 matches of \abc/something\abc/

 # ?:.*?((\\\w+/).*?\2))+ 

 (?:
      .*? 
      (                             # (1 start)
           ( \\ \w+ / )                  # (2)
           .*? 
           \2 
      )                             # (1 end)
 )+

C＃

string str = @"\abcX/somethinghere\abcX/\abcY/there\abcY/\abcZ/\abcZ/";
Regex RxAbc = new Regex(@"(?:.*?((\\\w+/).*?\2))+");
Match _mAbc = RxAbc.Match(str);
if (_mAbc.Success)
{
    CaptureCollection ccAbcToAbc = _mAbc.Groups[1].Captures;
    CaptureCollection ccAbc = _mAbc.Groups[2].Captures;
    for (int i = 0; i < ccAbcToAbc.Count; i++)
    {
        Console.WriteLine("Found keyword {0}, in string {1}", ccAbc[i].Value, ccAbcToAbc[i].Value);
    }
    Console.WriteLine("------------------------\n");
}

输出：

Found keyword \abcX/, in string \abcX/somethinghere\abcX/
Found keyword \abcY/, in string \abcY/there\abcY/
Found keyword \abcZ/, in string \abcZ/\abcZ/

相同的代码不同的输入

输入= @"\abc/somethinghere\abc/\abc/there\abc/\abc/\abc/"

输出：

Found keyword \abc/, in string \abc/somethinghere\abc/
Found keyword \abc/, in string \abc/there\abc/
Found keyword \abc/, in string \abc/\abc/

如何找到所有比赛

2 个答案: