Data Structures вопросы и ответы для интервью
Вопрос 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.
Вопрос 42. How is the front of the queue calculated ?
The front of the queue is calculated by front = (front+1) % size.
Вопрос 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.
Вопрос 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.
Вопрос 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.
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