Which of the following updates of a list does not have a constant time implementation, if the list is implemented as a singly-linked list. Select one: 1) setting the last element of the list to a new value 2) swapping the first two elements of the list 3) setting the first element of the list ot a new value 4) swapping the last two elements of the list 5) swapping the first and last elements of the list
Types of Linked List
A sequence of data elements connected through links is called a linked list (LL). The elements of a linked list are nodes containing data and a reference to the next node in the list. In a linked list, the elements are stored in a non-contiguous manner and the linear order in maintained by means of a pointer associated with each node in the list which is used to point to the subsequent node in the list.
Linked List
When a set of items is organized sequentially, it is termed as list. Linked list is a list whose order is given by links from one item to the next. It contains a link to the structure containing the next item so we can say that it is a completely different way to represent a list. In linked list, each structure of the list is known as node and it consists of two fields (one for containing the item and other one is for containing the next item address).
Which of the following updates of a list does not have a constant time implementation, if the list is implemented as a singly-linked list.
Select one:
1) setting the last element of the list to a new value
2) swapping the first two elements of the list
3) setting the first element of the list ot a new value
4) swapping the last two elements of the list
5) swapping the first and last elements of the list
This is a practice question I found online
I don't understand the question, what option is it and can someone explain the answer please, thank you.
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