Question

我能否将这些定期表达结合起来?

        _regexes = new List<Regex>();
        _regexes.Add(new Regex("[0-9]*th Fl$"));
        _regexes.Add(new Regex("[0-9]*th Floor$"));
        _regexes.Add(new Regex("[0-9]*st Fl$"));
        _regexes.Add(new Regex("[0-9]*st Floor$"));
        _regexes.Add(new Regex("[0-9]*nd Fl$"));
        _regexes.Add(new Regex("[0-9]*nd Floor$"));
        _regexes.Add(new Regex("[0-9]*rd Flr$"));
        _regexes.Add(new Regex("[0-9]*rd Floor$"));

Answer 1

d+(?:st|th|nd|rd) Fl(?:r|oor)?$

Match at least a digit or more, not zero digits (which is probably a shortcoming in the original)
Don t forget st
Match Fl, Floor or Flr
Use non-capturing group (?: instead of capturing group
Assumes perl compatible regex

Answer 2

[0-9]*(st|th|nd|rd) (Fl|Floor)$

发挥同样的作用。您使用/code>的操作员,实际上要说一种可能性。



[假定_regexes.Add(new Regex ("[0-9]*rd Flr$”); - the r is a打字]?

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