在列表框List1中显示整理前的数据,单击“排序”按钮,整理结果显示在列表框List2中,程序运行界面如图所示。
Dim a(20) As Integer
Private Sub Form_Load()
Randomize '对随机函数进行随机初始化
For i = 1 To 20
a(i) = ①
List1.AddItem Str(a(i))
Next i
End Sub
Private Sub Cd1_Click()
Dim Done As Boolean
Dim i As Integer, j As Integer, k As Integer, t As Integer
For i = 20 To 1 Step -1
If a(i) Mod 3 = 0 Then Exit For 'Exit For表示跳出For循环
Next i
If i = 0 Then
Label1.Caption = "没有满足条件的数"
Else ‘对能被3整除的数进行排序
②
Do While Not Done
j = i
Done = True
k = j - 1
Do While k >= 1
If a(k) Mod 3 = 0 Then
If a(k) > a(j) Then t = a(k): a(k) = a(j): a(j) = t: Done = False
③
End If
k = k - 1
Loop
Loop
End If
For i = 1 To 20
List2.AddItem Str(a(i))
Next i
End Sub
① ② ③