Question

I am new in C# please help to write in efficient C# way.

The case(always first character is ‘-‘ and the last is ‘>’):

Example 1:

input:   bdfdfd-wr>
output:  wr

Example 2:

input:   -dsdsds-sdsds-grtt>
output:  grtt

Example 3:

input:   -dsdsds-sdsds-grtt>><>>dfdfdfd
output:  grtt

Example 4:

input:   -dsdsds-sdsds-grtt>><->>df-d=fdfd
output:  grtt

Answer 1

     string input = "-dsdsds-sdsds-grtt>";
     int startInd = input.LastIndexOf('-');
     int endInd = input.IndexOf('>', startInd);
     string result;
     if (startInd < endInd) 
         result = input.Substring(startInd + 1, endInd - startInd - 1);

EDIT:

    string input = "-dsdsds-sdsds-grtt>><->>df-d=fdfd";
    string str = input.Substring(0, input.IndexOf('>'));
    string result = str.Substring(str.LastIndexOf('-') + 1);

Using linq seems to be also a good option:

var result = input.Split('>').First().Split('-').Last();