有如下Visual Basic程序段: Dim a(1 To 7) As Integer, i As Integer, j As Integer
Dim k As Integer, c As Integer
a(1)=4: a(2)=9: a(3)=1: a(4)=5
a(5)=8: a(6)=6: a(7)=2
s=“”
For i=1 To 3
For j=i+1 To 7
If a(j) < a(i) Then
k=a(j): a(j)=a(i): a(i )=k
c=c+1
End If
Next j
s=Str(a(i))+s
Next i
Text1.Text=Str(c) & “:” & s
该程序段运行后,文本框Text1中显示的内容是( )