Data Structures 面试题与答案
问题 41. Why is the isEmpty() member method called?
The isEmpty() member method is called within the dequeue process to determine if there is an item in the queue to be removed i.e. isEmpty() is called to decide whether the queue has at least one element. This method is called by the dequeue() method before returning the front element.
问题 42. How is the front of the queue calculated ?
The front of the queue is calculated by front = (front+1) % size.
问题 43. What does each entry in the Link List called?
Each entry in a linked list is called a node. Think of a node as an entry that has three sub entries. One sub entry contains the data, which may be one attribute or many attributes. Another points to the previous node, and the last points to the next node. When you enter a new item on a linked list, you allocate the new node and then set the pointers to previous and next nodes.
问题 44. What is Linked List ?
Linked List is one of the fundamental data structures. It consists of a sequence of? nodes, each containing arbitrary data fields and one or two (?links?) pointing to the next and/or previous nodes. A linked list is a self-referential datatype because it contains a pointer or link to another data of the same type. Linked lists permit insertion and removal of nodes at any point in the list in constant time, but do not allow random access.
问题 45. What member function places a new node at the end of the linked list?
The appendNode() member function places a new node at the end of the linked list. The appendNode() requires an integer representing the current data of the node.
用户评价最有帮助的内容：
- What is data structure?
- List out the areas in which data structures are applied extensively?
- What is the data structures used to perform recursion?
- If you are using C language to implement the heterogeneous linked list, what pointer type will you use?
- What are the methods available in storing sequential files ?