实现上述功能的VB程序如下，但加框处代码有错，请改正。

Private Sub Command1_Click()

  Text2．Text=coding(Text1．Text)

End Sub

Private Function coding(s As String)As String

 Dim n As Integer，i As Integer，C As String

 c=Mid(s，1，1)

n=1

 For i=2 To Len(s)

    If  Then    ‘(1)

       n=n+1

    Else

      c=c+Str(n)+“／”

      n=1

    End If

  Next i

  coding=     ‘(2)

End Function

Dim a(1 To 10) As Integer

Private Sub Command1 Click()

Dim i As Integer, j As Integer, x As Integer p = True

i = 1

    Do While i <= 9 And p p= False

    For j = 10 To i + 1 Step -1

        If  Then    '①

            k = a(j): a(j) = a(j - 1): a(j - 1) = k: p = True

        End If

    Next j

    i = i + 1

Loop

For i = 1 To 10

    List2.AddItem Str(a(i)) Next i

End Sub

Private Sub Form_Load()

Dim i As Integer

List1.Clear

Randomize         '初始化随机函数 Rnd

For i = 1 To 10

    a(i) =     '②

List1.AddItem

Str(a(i))

Next i

End Sub

①{#blank#}1{#/blank#} ②{#blank#}2{#/blank#} 

实现上述功能的VB代码如下，但加框处代码有错，请改正。

Dim a(1 To 20)As String   ‘用于存储20个字符串

‘将20个字符串分别保存赋值给数组元素a(1)、a(2)、a(3)、a(4)、…、a(19)、a(20)，并在列表框List1中显示

Private Sub Form_Load()

‘代码略

End Sub

Private Sub Command1_Click()

Dim s As String, n As Integer, i As Integer

Dim flag As Boolean  ‘变量flag用于标记是否在数组a中筛选到左边与s匹配的字符串

List2.Clear  ‘筛选时清空上次筛选结果

s=Text1.Text

n=Len(s)

flag=False

For i=1 To 20

  If  Then   ‘{#blank#}1{#/blank#}

   List2.AddItem a(i)

   flag=True

  End If

Next i

If flag=False Then

     ‘{#blank#}2{#/blank#}

End If

End Sub