正则表达式C＃模式匹配

Question

Regex pattern(parent): ([Az]{1,})-([az]{1,})= this pattern finds out(eg:mid-night).

Regex pattern (child): Need to Know regex pattern for finding words(midnight) and (mid night).

I need Regex pattern for finding those words.

Answer 1

[az]+ ?[az]+ matches both midnight and mid night .

Middle " ?" matches zero or one space characters.

Answer 2

I assume you're using the parenthesis to regroup the words after. I'm not sure what you're looking for with regard to including capitalization. ([Az]+)[ ]?([az]+) will match midnight , MIDNIGHt , mid night , Mid night , MID night , etc.

If you're looking to match mid-night as well, use ([Az]+)[- ]?([az]+) .

Answer 3

I'm not sure what your aim is but this regex should work:

([A-z]{1,})[ ]?([a-z]{1,})

Or try this one to match also your parent pattern:

([A-z]{1,})[ ]?-?([a-z]{1,})

But still I would' recommend to just split the parent match using - , so:

string parentMatch = "mid-night";
string[] words = parentMatch.Split('-');

Then you would get following output words = { "mid", "night" } , so you could either concatenate them or not