algorithms.RevStrings.RevString C# (CSharp) Method

            public static string RevString(string str)
            {
                var charArry = str.ToCharArray();
                Array.Reverse(charArry);
                return new string(charArry);
            }
            public static string RevString2(string str)

 public static void callRevStringMethods()
 {
     Console.WriteLine("Hello World!");
     string revString = RevStrings.RevString("You cannot convert an array of strings to an array of characters by just calling a method like ToCharArray");
     Console.WriteLine("reverse string " + revString);
     string revString2 = RevStrings.RevString2("You cannot convert an array of strings to an array of characters by just calling a method like ToCharArray");
     Console.WriteLine("reverse string2 " + revString2);
     string revString3 = RevStrings.RevString3("You cannot convert an array of strings to an array of characters by just calling a method like ToCharArray");
     Console.WriteLine("reverse string3 " + revString3);
     string revString4 = RevStrings.RevString4("You cannot convert an array of strings to an array of characters by just calling a method like ToCharArray");
     Console.WriteLine("reverse string4 " + revString4);
 }