Split String By Char, But Skip Certain Char Combinations

Say I have a string in a form similar to this: 'First/Second//Third/Fourth' (notice the double slash between Second and Third) I want to be able to split this string into the follo

Solution 1:

Try with this C# solution, it uses positive lookbehind and positive lookahead:

string s = @"First/Second//Third/Fourth";
        var values = Regex.Split(s, @"(?<=[^/])/(?=[^/])", RegexOptions.None);

It says: delimiter is / which is preceded by any character except / and followed by any character except /.

Here is another, shorter, version that uses negative lookbehind and lookahead:

var values = Regex.Split(s, @"(?<!/)/(?!/)", RegexOptions.None);

This says: delimiter is / which is not preceded by / and not followed by /

You can find out more about 'lookarounds' here.

Solution 2:

In .NET Regex you can do it with negative assertions.(?<!/)/(?!/) will work. Use Regex.Split method.

Solution 3:

ok one thing you can do is to split the string based on /. The array you get back will contain empty allocations for all the places // were used. loop through the array and concatenate i-1 and i+1 allocations where i is the pointer to the empty allocation.

Solution 4:

How about this:

vararray = "First/Second//Third/Fourth".replace("//", "%%").split("/");

array.forEach(function(element, index) {
    array[index] = element.replace("%%", "//");
});