Question

高手指点我要编写一个VB程序，点击command1时，随机产生10个0到100的随机整数，并将其显示在text1.text

点击command2时。可以输入一个整数。并在text1.text中查找。如果找到则在text2.text显示其在text1.text中的位置 ，如果没找到，则显示“该数不存在于数组中”。下面这个程序有什么错吗？为什么a=split(text1.text," ")这段提示类型不匹配?程序应该怎么改？高手帮忙.
Option Base 1
Private Sub command1_click()
Dim a(10) As Integer
Dim temp As Long
For i = 1 To 10
a(i) = Int(Rnd * 100 + 0.5)
Next i
Text1.Text = a(1) & Space(2) & a(2) & Space(2) & a(3) & Space(2) & a(4) & Space(2) & a(5) & Space(2) & a(6) & Space(2) & a(7) & Space(2) & a(8) & Space(2) & a(9) & Space(2) & a(10)
End Sub
Private Sub command2_click()
Dim a() As Variant

Dim much As Long, temp As Long
much = Val(InputBox("请输入一个整数"))
For i = 1 To 8
For j = i + 1 To 9
a = Split(Text1.Text, " ")
If a(i) > a(j) Then
temp = a(i)
a(j) = temp
a(i) = a(j)
End If
Next j
Next i
low = 1: Top = 10
flag = False
Do While flage = False And low <= high
t = Int((Top + low) / 2)
If much = a(t) Then
flage = True
ElseIf a(t) > much Then
Top = t - 1
Else
low = t + 1
End If
Loop
If flage = True Then
Text1.Text = "该数在第" & t & "个位置"
Else
Text2.Text = "该数不存在于数组中"
End If

Answer 1

你的错误在于command2中a() 的定义
不能定义为a()数组类型的Variant,如果这样用，你的数组维数没有定义；
改正代码：（你的command2中的代码是对a进行排序之后，查找，违背了你提问中的描述！我是按照你提问中的方式修改的，重新定义b as variant类型）
Option Base 1

Private Sub command1_click()

Dim a(10) As Integer

Dim temp As Long

For i = 1 To 10
a(i) = Int(Rnd * 100 + 0.5)
Next i

Text1.Text = a(1) & Space(2) & a(2) & Space(2) & a(3) & Space(2) & a(4) & Space(2) & a(5) & Space(2) & a(6) & Space(2) & a(7) & Space(2) & a(8) & Space(2) & a(9) & Space(2) & a(10)
End Sub

Private Sub command2_click()

Dim a As Variant
Dim b As Variant
Dim i As Long
Dim much As Long, temp As Long

much = Val(InputBox("请输入一个整数"))

For i = 1 To 8
For j = i + 1 To 9
a = Split(Text1.Text, " ")

If a(i) > a(j) Then
temp = a(i)
a(j) = temp
a(i) = a(j)
End If

Next j
Next i

Dim flage As Boolean
flage = False
b = Split(Text1.Text, " ")
For i = LBound(b) To UBound(b)
If b(i) = much Then
flage = True
Exit For
End If
Next
If flage = True Then
Text2.Text = "该数在第" & i + 1 & "个位置"
Else
Text2.Text = "该数不存在于数组中"
End If

End Sub

追问

split函数产生的一维数组下标是从0开始的， For i = 1 To 8
For j = i + 1 To 9
a = Split(Text1.Text, " ")这段排序程序不是没将0这个位置的数参与排序吗？

追答

Option base 1 是可以定义数组的下标起始值，但是对于Array定义的数组和Split赋予的vartiant类型数组无效
你可以使用Lbound 和Ubound来获取下标
你中间的排序部分是冒泡排序吧

追问

但是排序那儿应该从0开始啊

追答

那你的代码中Option base 1就不需要了
还有你要知道a（10）那表示下标从0-10, 11个数值啊！你可以这样定义 a(0 to 9)

追问

能在百度hI里加我为好友吗？split返回的函数下标是从零开始的，排序也应该是从零开始，即for i=0 to 8,j=i+1 to 9这样十个数没错啊。如果是for i=1 to 8，那么0这个位置的数不没参与排序吗？望指点。请同意加我为好友。以后还望多多指教，不胜感激、

追答

你加我吧，这样会，你的财富值消耗的厉害啊
！！

Answer 2

这个问题已经在http://zhidao.baidu.com/question/262052332.html给予了回答。

你的程序中，排序部分有问题，折半查找部分也存在问题。如下程序在你源程序的基础上，进行了修改。
Option Base 1
Private Sub command1_click()
Dim a(10) As Integer
Dim temp As Long
For i = 1 To 10
a(i) = Int(Rnd * 100 + 0.5)
Next i
Text1.Text = a(1) & Space(2) & a(2) & Space(2) & a(3) & Space(2) & a(4) & Space(2) & a(5) & Space(2) & a(6) & Space(2) & a(7) & Space(2) & a(8) & Space(2) & a(9) & Space(2) & a(10)
End Sub
Private Sub command2_click()
Dim a As Variant
Dim much As Long, temp As Long
much = Val(InputBox("请输入一个整数"))
a = Split(Text1.Text, " ")

For i = 0 To 8
For j = i + 1 To 9
If a(i) > a(j) Then
temp = a(i)
a(i) = a(j)
a(j) = temp
End If
Next j
Next i
low = 0: Top = 9
f = 0
Do
t = Int((Top + low) / 2)
If much = a(t) Then
f = 1
Else
If much > a(t) Then
low = t + 1
Else
Top = t - 1
End If
End If
Loop While (low < Top) And (f = 0)
If f = 1 Then
Text2.Text = "该数在第" & t + 1 & "个位置" '声明：此时的位置是排序后的位置，不是原始位置
Else
Text2.Text = "该数不存在于数组中"
End If
End Sub