实现上述功能的VB程序如下。

Dim a(1 To 8) As Integer

Dim n As Integer

Private Sub Form_Load()

a(1) = 30: a(2) = 47: a(3) = 30: a(4) = 72

a(5) = 70: a(6) = 23: a(7) = 99: a(8) = 24

n = 8

For i = 1 To 8

List1.AddItem str(a(i))

Next i

End Sub

Private Sub Command1_Click()

Dim i As Integer, j As Integer, k As Integer

Dim pos As Integer

Dim s As String

s = Text1.Text

pos = Val(Text1.Text)

For i = 1 To n - 1

For j = n To i + 1 Step -1

If a(j) < a(j - 1) Then

                       '改错

a(j - 1) = a(j)

a(j) = k      

'如果pos位置的数据参与交换，则更新pos值，记录pos变化位置

If pos = j Then

pos = j - 1

s = s + "→" + Str(pos)

        elseif        ②           then

pos = j

s = s + "→" + Str(pos)

End If

End If

Next j

Next i

Label1.Caption = "位置变化情况：" + s

List2.Clear

For i = 1 To n

List2.AddItem Str(a(i))

Next i

End Sub

t=0

For i=1 To 4

flag=False

For j=5 To i+1 Step-1

If a(j)>a(i) Then flag=True

  t=t+1

  temp=a(j):a(j)=a(i):a(i)=temp

End If

Next j

If flag=False Then Exit For

Next i

Const n = 10

Dim a(1 To n) As Integer

Private Sub Command1_Click()

Dim i As Integer, j As Integer, t As Integer

Dim bottom As Integer

'获取排序前数据依次存储在数组a中，并在文本框Text1中显示。代码略

bottom = n

i = 1

Do While i <= bottom - 1

   For j = bottom To i + 1 Step -1

      If  Then  {#blank#}1{#/blank#}

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

      ElseIf a(j) = a(j - 1) Then    '相邻两个数据相等，进行剔除处理

            {#blank#}2{#/blank#}

         bottom = bottom - 1

      End If

   Next j

   i = i + 1

Loop

Text2.Text = " "

For i = 1 To bottom

   Text2.Text = Text2.Text + Str(a(i))

Next i

End Sub

请回答下列问题：

a=[27,5,25,36,78]

f=[False]*5

i=0

while i<4 and not f[i]:

    for j in range(4, i, -1):

        if a[j]<a[j-1]:

            a[j], a[j-1]=a[j-1], a[j]

            f[i]=True

    i+=1

执行该程序段后，数组f中值为True的元素个数是（   ）