Concatenate neighboring characters of a special character "-"

Question

i am developing an application using c#.net in which i need that if a input entered by user contains the character '-'(hyphen) then i want the immediate neighbors of the hyphen(-) to be concatenated for example if a user enters

A-B-C then i want it to be replaced with ABC
AB-CD then i want it to be replaced like BC
ABC-D-E then i want it to be replaced like CDE
AB-CD-K then i want it to be replaced like BC and DK both separated by keyword and

after getting this i have to prepare my query to database.

i hope i made the problem clear but if need more clarification let me know. Any help will be appreciated much.

Thanks, Devjosh

Answer 1

Use:

string[] input = {
                        "A-B-C",
                        "AB-CD",
                        "ABC-D-E",
                        "AB-CD-K"
                    };

var regex = new Regex(@"\w(?=-)|(?<=-)\w", RegexOptions.Compiled);

var result = input.Select(s => string.Concat(regex.Matches(s)
    .Cast<Match>().Select(m => m.Value)));

foreach (var s in result)
{
    Console.WriteLine(s);
}

Output:

ABC
BC
CDE
BCDK