Split string with variable number of spaces [duplicate]

Question

I'm trying to split a string like this:

7       300685  1235    200017  200018  200019

In

7
300685
1235
200017
200018
200019

array of strings.

I've come up with this Regex but it keeps the white spaces too:

var myStrings = System.Text.RegularExpressions.Regex.Split(linea, @"\s+");

That's because I target any string that preceeds a white space. How to not to do that and keep only not white strings.

I know that it is easily done by removing empty strings from the array but I would like to do it with the regular expression.

Answer 1

You can use StringSplitOptions.RemoveEmptyEntries enumeration with String.Split method like;

The return value does not include array elements that contain an empty string

string s = "7       300685  1235    200017  200018  200019";
var array = s.Split(new []{" "}, StringSplitOptions.RemoveEmptyEntries);
foreach (var item in array)
{
    Console.WriteLine(item);
}

Output will be;

7
300685
1235
200017
200018
200019

Here a demonstration.

Answer 2

Why don't you just use String.Split method ?

var myStrings = linea.Split(new [] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

Another way with Split and LINQ without RemoveEmptyEntries option:

var myStrings = linea.Split().Where(x => x.All(char.IsDigit)).ToArray();

Also there is a RegexOption.IgnorePatternWhitespace parameter that you can pass your Regex.Split method to remove whitespaces:

var myStrings = Regex.Split(linea, @"\s+", RegexOptions.IgnorePatternWhitespace);