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分享static void Transpose(string s)
{
string[] arr = s.Split('.');
string str = "";
for (int i = arr.Length - 1; i >=0; i--)
{
str += arr[i].ToString()+".";
}
str = str.Substring(0, str.Length - 1);
Console.WriteLine(str);
} string test = "xxx.rrr.zzz";
string[] list = test.Split('.');
StringBuilder sb = new StringBuilder(512);
for(int i=list.Length-1;i>=0;i--)
{
sb.Append(list[i] + ".");
}
string result = sb.ToString().TrimEnd('.');
string str = "xxx.rrr.zzz";
string[] temp = str.Split('.');
Array.Reverse(temp);
string result = string.Join(".", temp);