Regex to match a number sequence like 1 2 3

Question

I want to capture number sequences like 1 2 3 or 45 78 63 . I have been trying to create a regex that matches the sequence for a while.

I managed to write a regular expression pattern (\\b\\d+\\b\\s){3,} .

But the above pattern matches 1 2 3 and not 45 78 63 . Another problem with my pattern is that the captured group includes a trailing whitespace character.

Answer 1

\\d+\\s\\d+(\\s\\d+)+ seems simpler

You can test it on regex101 .

Answer 2

another variant would be

 (\s?(\d+)\s?){3}

here is a RegEx_Com test

to get rid of the trailing white space you can use the String.Trim() method:

string res = Regex.Match(teststring, @"(\s?(\d+)\s?){3}").Value.Trim();