Trim sections between two chars in comment-CodePudding

I was looking on the internet for the fastest way of trimming parts of a string. This is the input:

Hello /*test*/World!

This is the outcome I want to achieve:

Hello World!

I tried doing this with String.Remove, but I didn't succeed.

string input = "Hello /*test*/World!";
string output = input;
int index = output.LastIndexOf("/*");
int index2 = output.LastIndexOf("*/");
if (index >= 0)
{
    output = output.Remove(index, index2-3);
}

Thank you!

CodePudding user response：

You can try regular expressions:

  using System.Text.RegularExpressions;

  ...

  string input = "Hello /*test*/World!"; 

  // we replace each /* ... */ match with empty string
  string output = Regex.Replace(input, @"/\*.*?\*/", "");

Pattern /\*.*?\*/ explained:

  /\* - /*, note that * is escaped
  .*? - any symbols but as few as possible
  \*/ - */, note that * is escaped

CodePudding user response：

This is the solution that I made with the help of Steve.

string input = "Hello /*test*/World!";
string output = input;
int index = output.LastIndexOf("/*");
int index2 = output.LastIndexOf("*/");
if (index >= 0)
{
    output = output.Remove(index, index2 2 - index);
}