线性表节点的插入和删除算法
'作者:Snowcloud2002
'插入节点
'函数名称: NodeInsert(Pos As Integer, Num As Integer, TableName As Variant) As Boolean
'参数: Pos As Integer要插入节点的位置,Num As Integer要插入的数值,TableName As Variant线性表名称
'返回值: Boolean
Function NodeInsert(Pos As Integer, Num As Integer, TableName As Variant
'改变源线性表长度：插入结点后线性表长度加一
ReDim Preserve TableName(UBound(TableName) + 1)
'对线性表中第i个元素到最后一个元素的位置后移一位
For i = (UBound(TableName)) To (Pos + 1) Step -1
If i < 1 Or i > (UBound(TableName)) Then
Insert = False
Exit Function
Else
TableName(i) = TableName(i - 1)
End If
Next
'将要插入的元素放到第i个位置
TableName(i) = Num
Insert = True
End Function
'删除节点
'函数名称: NodeDelete(Pos As Integer, TableName As Variant) As Boolean
'参数: Pos As Integer要删除节点的位置,TableName as Variant线性表名称
'返回值: Boolean
Function NodeDelete(Pos As Integer, TableName As Variant) As Boolean
'对线性表中第i个元素到最后一个元素的位置前移一位
For i = Pos To (UBound(TableName))
If i < 1 Or i > (UBound(TableName)) Then
Delete = False
Exit Function
Else
TableName(i - 1) = TableName(i)
End If
Next
'改变源线性表长度:删除结点后线性表长度减一
ReDim Preserve TableName(UBound(TableName) - 1)
Delete = True
End Function
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欢迎大家发表看法，有问题的地方大家请指正，谢谢！
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