打开VB6.0,新建一个工程,在窗体中添加两个命令按钮,caption分别改为“升序排列”和“降序排列”,添加两个个标签控件,将名字分别改为Lbl1和Lbl2,将窗体Form1的caption属性改为“选择法数组排序”,将界面设置成下图:
首先产生10个随机数在标签中显示。
双击窗体,在Load事件中写入如下代码:
Randomize
For i = 1 To 10
a(i) = Int(Rnd * 101 + 100)
Lbl1.Caption = Lbl1.Caption & a(i) & " "
Next i
在通用对话框对数组进行定义,使其成为窗体级变量:
Dim a(1 To 10) As Integer
双击“升序排列”命令按钮,进入代码编辑窗口,输入如下代码:
For i = 1 To 9
Min = a(i)
For j = i + 1 To 10
If a(j) < Min Then
Min = a(j)
t = a(i): a(i) = a(j): a(j) = t
End If
Next j
Next i
Lbl2.Caption = ""
For i = 1 To 10
Lbl2.Caption = Lbl2.Caption & a(i) & " "
Next i
双击“降序排列”命令按钮,进入代码编辑窗口,输入如下代码:
For i = 1 To 9
Max = a(i)
For j = i + 1 To 10
If a(j) > Max Then
Max = a(j)
t = a(i): a(i) = a(j): a(j) = t
End If
Next j
Next i
Lbl2.Caption = ""
For i = 1 To 10
Lbl2.Caption = Lbl2.Caption & a(i) & " "
Next i
关闭代码窗口,按下F5运行程序,产生10个随机数,标签中显示10个数:
单击“升序排列”命令按钮,标签一中的数组按升序排列在标签二中显示,如图:
单击“降序排列”命令按钮,标签一中的数组按降序排列在标签二中显示,如图:
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