How to delete every 2nd character in a string?

Question

How to delete every 2nd character in a string?

For example:

3030313535333635  -> 00155365
3030303336313435  -> 00036145
3032323437353530  ->         


        

Answer 1

You can use this well-known class System.Runtime.Remoting.Metadata.W3cXsd2001.SoapHexBinary :)

string str = "3030313535333635";
var hex = System.Runtime.Remoting.Metadata.W3cXsd2001.SoapHexBinary.Parse(str);
var newstr = Encoding.ASCII.GetString(hex.Value);

Answer 2

Code in Java Language

String input= "3030313535333635"
String output="";

for(int i=1;i<input.length();i=i+2)
{
    output+=input.charAt(i).toString();
}
System.out.println(output);

Answer 3

Try this to get the every other character from the string:-

 var s = string.Join<char>("", str.Where((ch, index) => (index % 2) != 0));

Answer 4

String input = "3030313535333635";
String result = "";
for(int i = 1; i < 16; i +=2 )
{
    result += input[i];
}

Answer 5

Using a StringBuilder to create a string will save resources

string input = "3030313535333635";
var sb = new StringBuilder(8); // Specify capacity = 8
for (int i = 1; i < 16; i += 2) {
    sb.Append(input[i]);
}
string result = sb.ToString();