public void AddTheEnd(T data)
{
if (_head == null)
{
_head = new SinglyNode <T>(data);
goto end;
}
GetOrNull(_count - 1).NextData = new SinglyNode <T>(data);
end:
_count += 1;
}
public void Remove(int index)
{
if (index == 0)
{
_head = _head.NextData;
}
else
{
SinglyNode <T> topSinglyNode = GetOrNull(index - 1);
SinglyNode <T> endSinglyNode = GetOrNull(index + 1);
topSinglyNode.NextData = endSinglyNode;
}
end:
_count -= 1;
}
public void Insert(T data, int index)
{
if (index == 0 && _head == null)
{
_head = new SinglyNode <T>(data);
goto end;
}
var topNode = GetOrNull(index);
if (topNode == null)
{
GetOrNull(index - 1).NextData = new SinglyNode <T>(data);
goto end;
}
//head 把head赋值，head的next赋值原node
if (index == 0)
{
var itemHead = _head;
var node = new SinglyNode <T>(data);
node.NextData = itemHead;
_head = node;
}
//不是Head 把index-1的next赋值value node ，value node next赋值原 node
else
{
var topNode_ = GetOrNull(index - 1);
var itemNode_ = topNode_.NextData;
topNode_.NextData = new SinglyNode <T>(data);
topNode_.NextData.NextData = itemNode_;
}
end:
_count += 1;
}
