用C#编写,输入一个整数将其各位数字颠倒顺序后输出

static void Main(string[] args)
{
string ddd = Console.ReadLine();
char[] strarr = ddd.ToString().ToCharArray();
StringBuilder sb = new StringBuilder();
for (int i = strarr.Length-1; i >=0; i--)
{
sb.Append(strarr[i]);
}
Console.WriteLine(sb.ToString());
Console.ReadKey();
}