您好,我在0和10之间有5个唯一的数字,我正在做以下事情:
Dim RandomClass As New Random()
Dim RandomNumber As Integer
For counter As Integer = 0 To 5
RandomNumber = RandomClass.Next(0, 10)
MsgBox(RandomNumber )
Next
有时它可以工作,我得到的数字是:“1、7、4、9、3”
但有时我会得到重复的数字,例如:“5,2,3,2,7”
如何确定每次都有唯一的号码?
谢谢。
最佳答案
使用HashSet(Of Integer)
记住已经打印出的数字:
Dim RandomClass As New Random()
Dim RememberSet As New HashSet(Of Integer)
Dim RandomNumber As Integer
While RememberSet.Count < 5
RandomNumber = RandomClass.Next(0, 10)
If RememberSet.Add(RandomNumber) Then
MsgBox(RandomNumber)
End If
End While