Dim sr() As String = {"张三", "李四", "王五", "赵六", "大卫", "小伟", "秘鲁", "里奇", "可达", "披露", "问止"}
Dim a As Integer = 5
Dim lst As New List(Of String)
For i As Integer = a To sr.Length - 1
lst.add(sr(i))
Next
For i As Integer = 0 To a - 1
lst.add(sr(i))
Next
For Each s As String In lst
Output.Show(s)
Next
Dim lst2 As New List(Of String)
For i As Integer = a To 0 Step - 1
lst2.add(sr(i))
Next
For i As Integer = sr.Length - 1 To a + 1 Step - 1
lst2.add(sr(i))
Next
For Each s As String In lst2
Output.Show(s)
Next