Add separator to string at every N characters?

Question

I have a string which contains binary digits. How to separate string after each 8 digit?

Suppose the string is:

string x = \"111111110000000011111111         


        

Answer 1

Here my two little cents too. An implementation using StringBuilder:

        public static string AddChunkSeparator (string str, int chunk_len, char separator)
        {
            if (str == null || str.Length < chunk_len) {
                return str;
            }
            StringBuilder builder = new StringBuilder();
            for (var index = 0; index < str.Length; index += chunk_len) {
                builder.Append(str, index, chunk_len);
                builder.Append(separator);
            }
            return builder.ToString();
        }

You can call it like this:

string data = "111111110000000011111111000000001111111100000000";
string output = AddChunkSeparator(data, 8, ',');