Question

我目前正在尝试执行数组搜索，如果数组包含与特定字符匹配的字符串，则返回true。

例如：

我有一个包含这3个值的数组

"Atlanta Hawks are great this year!",
"Atlanta Braves are okay this year!",
"Atlanta Falcons are great this year!"

如果数组包含至少一个与下面的针匹配的值，我要做的就是返回true ...

"Atlanta* *are great this year!"

（在本例中决定使用星号作为通配符）

在这种情况下会返回true。

然而对于这个阵列

"Atlanta Hawks are bad this year!",
"Detroit Tigers are okay this year!",
"New England Patriots are good this year!"

它会返回false。

目前我正在做的是......（而不是工作）

 if (result.Properties["memberOf"].Matches("Atlanta* *are great this year!"))
                {
                    return true;
                }

我的问题是，是否有任何可以与.Contains（）方法一起使用的通配符，或者是否有与C＃中PHP中的preg_grep（）类似的方法？

我提前感谢您的帮助。

Answer 1

你可以这样做：

string[] input = {"Atlanta Hawks are great this year!", "Atlanta Braves are okay this year!", "Atlanta Falcons are great this year!"};
var output = false;
Regex reg = new Regex("Atlanta (.*) are great this year!");
foreach (var item in input)
{        
    Match match = reg.Match(item);
    if (match.Success)
    {
        output = true;
        break;
    }
}

Answer 2

手头没有编译器，但它应该是这样的：

public boolean checkMyArray(string[] theStringArray) {
    string pattern = "Atlanta (.*) are (great|okay) this year!";
    foreach (string s in theStringArray) {
       if(System.Text.RegularExpressions.Regex.IsMatch(s, pattern))
          return true;
    }
    return false;
}

Answer 3

我建议将外卡（包含*和?）转换为正则表达式模式，然后使用 Linq 找出是否有与正则表达式匹配的Any项：

  string[] data = new string[] {
    "Atlanta Hawks are great this year!",
    "Atlanta Braves are okay this year!",
    "Atlanta Falcons are great this year!"
  };

  string wildCard = "Atlanta* *are great this year!";

  // * - match any symbol any times
  // ? - match any symbol just once
  string pattern = Regex.Escape(wildCard).Replace(@"\*", ".*").Replace(@"\?", ".");

  bool result = data.Any(item => Regex.IsMatch(item, pattern));

您可能希望将实现包装到方法中：

  private static bool ContainsWildCard(IEnumerable<String> data, String wildCard) {  
    string pattern = Regex.Escape(wildCard).Replace(@"\*", ".*").Replace(@"\?", ".");

    return data.Any(item => Regex.IsMatch(item, pattern));
  }

  ...

  String[] test = new String[] {
    "Atlanta Hawks are bad this year!",
    "Detroit Tigers are okay this year!",
    "New England Patriots are good this year!"
  }

  bool result = ContainsWildCard(test, "Atlanta* *are great this year!");

C＃.contains（）使用正则表达式

3 个答案: