主题：获得集合中的特定元素

2、   Dim oldArray() As Integer = {10, 7, 9, 8, 6, 1, 3, 4, 2, 5, 1, 2, 3}

        Array.Sort(oldArray)        

        Dim V1 As New List(Of Integer)

        For i As Integer = 0 To oldArray.Length - 1

            If Not V1.Contains(oldArray(i)) Then  V1.Add(oldArray(i))

        Next

        Dim newArray() As Integer = V1.ToArray