How do you get value of a string in reverse order in c?

Answer 1

Assume C#, not C:

Traditional way:

public string Reverse(string s)

{

if (string.IsNullOrEmpty(s)) return s; // "" or null

char[] characters = s.ToCharArray();

Array.Reverse(characters);

return new string(characters);

}

or as an extension method:

public static string Reverse(this string s) {

if (s == "") return "";

char[] characters = s.ToCharArray();

Array.Reverse(characters);

return new string(characters);

}

The differences of the 2 methods above is on the caller (how to use Reverse()), and they may co-exist:

For example:

string test = "abc";

string result1 = Reverse(test); // traditional way

string result2 = test.Reverse(); // call the extension