举一反三
- 若通过List<br/>list = new List(); 创建的列表框,如何获得该列表框中当前选中的列表项(<br/>)。 A: list.getSelectedIndex() B: list. getSelectedItem( ) C: list. getItem (i) D: list. select (i)
- In a singly linked list which operation depends on the length of the list.( ) A: Interchange the first two elements of the list B: Delete the first element of the list C: Add an element before the first element of the list D: Delete the last element of the list
- Kesi is not only on the national list of intangible cultural heritage but also on the UNESCO Intangible Cultural Heritage list.
- Which one of the following is not a characteristic of the linked list? A: The node in a linked list can be accessed randomly B: Inserting or deleting a node in a linked list do not need to move the other nodes C: Don't have to estimate storage space in advance D: The memory space required by a linked list is in proportion to the length of the list.
- In a doubly linked list, each node has links to the previous and next nodes in the list. A: 正确 B: 错误
内容
- 0
使用Java代码实现从表table中取出所有数据信息，代码如下（假设可以直接调用数据库连接conn），下面对代码描述正确的是（ ）。（选择一项）public List getInfo（）{List list=new ArrayList（）；String sql=“select * from table1”；PrearedStatement pst=();Result rs=();If()){(1));}return list;} A: 返回list集合，包含一条信息 B: 返回list集合，包含所有数据信息 C: 程序发生编译错误，无法运行 D: 编译通过，运行时出错
- 1
A<br/>stack is a special type of linked list in which objects can only be<br/>added to and removed from the top of the list.
- 2
下列哪种方式创建的列表框允许选择多个列表项(<br/>)。 A: List list = new List() B: List list = new List(4) C: List list = new List(4, false) D: List list = new List(4, true)
- 3
List some aspects of people's lives that have changed as a result of the development of digital technology.
- 4
下面程序的运行结果为。 def swap(list): temp=list[0] list[0]=list[1] list[1]=temp list=[1,2] swap(list) print(list)