s = Text1.Text
s1 = ""
For i = 1 To Len(s) \ 2
m = Mid(s, i, 1)
n = Mid(s, n - i + 1, 1)
If m > n Then
s1 = s1 + m + n
Else
s1 = s1 + n + m
Next i
Text2.Text = s1
在Text1中输入“8523691”,则执行该程序后,Text2中输出的是( )