/* * Filename: testStringReverse.cs * * Compile: csc testStringReverse.cs * Execute: testStringReverse */ using System; public class StringReverseApp { public static void Main(string[] args) { string a, b; a = "Hello, world!"; b = "안녕하세요?"; char[] arr = a.ToCharArray(); Array.Reverse(arr); Console.WriteLine(new String(arr)); arr = b.ToCharArray(); Array.Reverse(arr); Console.WriteLine(new String..