Which of the following statements is true about a linked list?a)It sto...
In a linked list, each node contains a data element and a pointer to the next node.
View all questions of this test
Which of the following statements is true about a linked list?a)It sto...
Linked List Explanation:
A linked list is a data structure that is used to store a collection of elements. It consists of a sequence of nodes, where each node contains both data and a pointer to the next node in the sequence. The last node in the list typically has a null pointer, indicating the end of the list.
Let's examine each statement and determine if it is true or false:
a) It stores elements in contiguous memory locations.
False. Unlike arrays, which store elements in contiguous memory locations, a linked list stores its elements in separate nodes that are scattered throughout memory. Each node contains both the data and a pointer to the next node, allowing for dynamic memory allocation.
b) It supports constant-time random access to elements.
False. Unlike arrays, which allow for constant-time random access to elements based on their index, linked lists do not support this. In order to access an element in a linked list, you need to traverse through the list starting from the head node, which can take linear time.
c) It consists of nodes that contain both data and pointers to the next node.
True. This statement is true and is a defining characteristic of a linked list. Each node in the linked list contains both the data element and a pointer to the next node in the sequence.
d) It has a fixed size that cannot be modified.
False. Another advantage of linked lists is that they can grow or shrink dynamically as elements are added or removed. Unlike arrays, which have a fixed size, linked lists can allocate and deallocate memory as needed, making them more flexible in terms of size.
In conclusion, the true statement about a linked list is that it consists of nodes that contain both data and pointers to the next node. This is a fundamental characteristic of linked lists and distinguishes them from other data structures like arrays.