匹配以下正则表达式：＃*：*＃

Question

我想找到一个字符串是否包含以哈希（＃）开头和结尾并包含冒号（:)的正则表达式。所有这些都应该在同一行上匹配

示例：你好#some：test＃和george MATCH

示例：你好＃：＃world NO MATCH

示例：你好#test：＃world NO MATCH

示例：你好＃：test＃world 没有比赛

示例：

你好[换行符]

到#some：test＃world NO MATCH

谢谢， 雅尼斯

Answer 1

这应该做：

@"\#.+:.+\#"

故障：

\#   - Match a # character
.+   - Followed by one or more characters
:    - Followed by a : character
.+   - Followed by one or more characters
\#   - Followed by a # character

请注意，.将匹配任何字符，可能不是最有效的正则表达式。

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非贪婪版本（效率更高）：

@"\#[^:]+:[^#]+\#"

\#    - Match a # character
[^:]+ - Followed by one or more characters that are not :
:     - Followed by a : character
[^#]+ - Followed by one or more characters that are not #
\#    - Followed by a # character