How can you remove duplicate characters in a string?

Question

I have to implements a function that takes a string as an input and finds the non-duplicate character from this string.

So an an example is if I pass string str = \"

Answer 1

Revised version of the first answer i.e: You don't need ToCharArray() function for this to work.

public static string RemoveDuplicates(string input)
{
    return new string(input.Distinct().ToArray());
}