正則表達式檢查某些字符

Question

我想檢查字符串是否同時包含引號，例如''和括號（...），該字符串出現在字符串的任何位置。

例如

string s = "The flora and fauna of Britain \"has been transported to almost every corner of the globe since colonial times\" (Plants and Animals of Britain, 1942: 8).";

string x = "Morris et al (2000: 47) state 'that the debate of these particular issues should be left to representative committees.'";

我想出了這個：

Regex.IsMatch(x, @"(?<=""')[^\""]*(?=""')")

但是，我認為我會嘗試string。包含@RB提到的

@musefan，字符串s和y均為正結果，必須打開和關閉引號。

Answer 1

您可以使用Count方法使用LINQ來解決問題：

string s = "The flora and fauna of Britain \"has been transported to almost every corner of the globe since colonial times\" (Plants and Animals of Britain, 1942: 8).";

bool isMatch = s.Count(c => c == '"') % 2 == 0  ||
               s.Count(c => c == '\'') % 2 == 0 ||
               (s.Count(c => c == '(') == s.Count(c => c == ')'));

如果要確保字符串包含所有字符" ' ( )只需將||更改為&&