using System; class MainClass { public static void Main() { string[] myStrings = {"To", "be", "or", "not","to", "be"}; string myString = String.Join(".", myStrings); int index = myString.IndexOf("be"); Console.WriteLine(""be" first occurs at index " + index + " of myString"); index = myString.LastIndexOf("be"); Console.WriteLine(""be" last occurs at index " + index + " of myString"); index = myString.IndexOf('b'); Console.WriteLine("'b' first occurs at index " + index + " of myString"); index = myString.LastIndexOf('b'); Console.WriteLine("'b' last occurs at index " + index + " of myString"); } }