问按值添加节点

EN

        public void AddOrdered(int value)
    {
        LinkedListNode nodeToAdd = new LinkedListNode(value);
        LinkedListNode cur = m_first;
        if (m_first == null) 
            m_first = nodeToAdd;//new LinkedListNode(value);

        else if (nodeToAdd.m_data < m_first.m_data) 
        {
            AddAtFront(value);
        }
        else if (nodeToAdd.m_data < cur.m_next.m_data) 
        {
            LinkedListNode temp = new LinkedListNode(value);
            temp = m_first.m_next;
            m_first.m_next = nodeToAdd;
            nodeToAdd.m_next = temp;
        }
        else
        {
            AddAtEnd(value);
        }
    }

        public void AddAtEnd(int value)
    {
        LinkedListNode cur = m_first;
        if (m_first == null)
        {
            LinkedListNode lnl = new LinkedListNode(value);
            m_first = lnl;
        }
        while (cur.m_next != null)
        {
            cur = cur.m_next;
        }
        cur.m_next = new LinkedListNode(value);
    }

        public void AddAtFront(int value)
    {
        if (m_first == null) 
        {
            LinkedListNode ln = new LinkedListNode(value);
            m_first = ln;
        }
        else
        {
            LinkedListNode lnl = new LinkedListNode(value); 
            lnl.m_next = m_first;                           
            m_first = lnl;                                 
        }
    }