VB应用程序界面如上图所示，在文本框text1中输入查询的日期（以月日形式，如0623），单击“查询”按钮，在列表框中显示所有这个日子出生的员工姓名（按姓名排序），并在Label3处显示员工数量，如果人数为0，则在列表框中显示“本天没有员工生日”。

解决此问题的VB程序如下，阅读程序并完成后面的问题。

‘定义存放员工姓名的数组na

Private Sub CmsqClick()

  Dim n As Integer , i As Integer , j As Integer

  Dim t1 As String

  ‘连接数据库获取数据

  Dim cn As new connection

  Dim rs As new recordest

  Dim str1 As String , str2 As String

     str1 =”driver=Microsoft access driver(*.mdb)”；dbq=”&app.path”&”员工信息.mdb”

     cn.open str1

     str2 = “select * form members where 生日 ＝’“ + text1.text + ”’”

     rs.open str2 ， cn.adOpenDynamic ，adLockOptimistic

     n = 0

     Do While Not Rs.EOF

       n = n + 1

       na(i) = rs.Fields(“姓名”).value

       rs.MoveNext

     Loop 

     rs.close

     cn.close

‘按姓名排序

If n = 0 Then

  List1.AddItem “本天没有员工生日”

Else

  For i = 1 to n-1

    For j = 1 to n+1 Step -1

      If na(j) < na(j-1) Then

        t1 = na(j) :     ①      : na(j-1) = t1

      End If

    Next j

   Next i

   For i = 1 to n

     List1.AddItem     ②   

   Next i

   Label3.Caption = “这天共” + Str(n) + “位员工生日”

  End If

End Sub

    For i = 1 To 2

        For j = 2 To 7 - i

            If a(j) > a(j - 1) Then

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

            End If

        Next j

Next i

数组元素a(1)到a(6)的值依次为“71，54，58，29，31，78”，经过该程序段“加工”后，下列说法正确的是（   ）

Dim c(1 To 100) As Integer, h(1 To 100) As Integer, d(1 To 100) As Integer

Dim n As Integer

Private Sub Form_Load()

     ‘从数据库中读取n个苹果的摘取所需力气和高度存放在数组c和h中,并显示在List1中,代码略

End Sub

Private Sub Command1_Click()

Dim a As Integer, b As Integer, s As Integer, i As Integer, j As Integer, m As Integer

a = Val(Text1.Text)     ‘梯子高度

b = Val(Text2.Text)     ‘手伸直高度

s = Val(Text3.Text)     ‘可用力气

m = 0

For i = 1 To n     ‘将所有能够摘得的苹果所需力气存储到数组d中

  If{#blank#}1{#/blank#}Then

m = m + 1

d(m) = c(i)

  End If

Next

For i = 1 To m - 1

  k = i

  For j = i + 1 To m

If{#blank#}2{#/blank#}Then k = j

  Next

  If k <> i Then

t = d(k): d(k) = d(i): d(i) = t

  End If

Next

ans = 0     ‘用剩余的力气去摘最多的苹果

For i = 1 To m

  If s >= d(i) Then

{#blank#}3{#/blank#}

ans = ans + 1

  End If

Next

Text4.Text = Str(ans)
End Sub

Dim a(1 To 100) As String '依次存放100 个随机字符串

Dim b(1 To 100) As Integer '依次存放每个字符串的权值

Private Sub Command1_Click() '产生100 个随机字符串

Dim i As Integer, k As Integer, t As Integer, x As Integer

Randomize

For i = 1 To 100

k = Int(Rnd * 10 + 1) : t = 0  'k 表示第i 个字符串的长度

Do While t < k '通过循环依次产生第i 个字符串a(i)的k 个字符

If Int(Rnd * 2 + 1) = 1 Then '产生一个小写字母的ASCII 码值

x = Asc("a") + Int(Rnd * 26)

Else

x = Asc("A") + Int(Rnd * 26) '产生一个大写字母的ASCII 码值

End If

                '①

If b(i) < x Then b(i) = x

t = t + 1

Loop

List1.AddItem a(i)

Next i

End Sub

Private Sub Command2_Click() '对100 个字符串按字符串权值降序排序

Dim i As Integer, j As Integer, y As Integer

Dim s As String

For i = 1 To 99

k = i

For j = i + 1 To 100

    '②

Next j

If k <> i Then

s = a(k): a(k) = a(i): a(i) = s

y = b(k): b(k) = b(i): b(i) = y

End If

Next i

For i = 1 To 100

List2.AddItem a(i)

Next i

End Sub

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

a = [ 6 , 12 , 9 , 20 , 8 , 11 , 4 ]

for j in range( 1 , len( a ) ) :

    if  a[ j ] < a[ j - 1 ] :

 a[ j ] = a[ j ] + a[ j - 1 ] ;  a[ j - 1 ] = a[ j ] - a[ j - 1 ] ;  a[ j ] = a[ j ] - a[ j - 1 ]

执行该段程序后，列表a的值是（   ）