using System; class Test { public static void Main() { StringBuilder str="ABCDEFGH"; for(int i=str.Length-1;i>=1;i-=2) { Console.Write(str[i-1]); Console.Write(str[i]); } } }
自己搞定了 string str = "ABCDEFGH"; string ss = ""; String s = ""; for (int i = str.Length - 2; i >= 0; i -= 2) { ss = str.Substring(i, 2); s = s + ss; }
谢谢
在Array.Reverse
class Test
{
public static void Main()
{
StringBuilder str="ABCDEFGH";
for(int i=str.Length-1;i>=1;i-=2)
{
Console.Write(str[i-1]);
Console.Write(str[i]);
}
}
}
String s = ""; for (int i = str.Length - 2; i >= 0; i -= 2)
{ ss = str.Substring(i, 2);
s = s + ss; }