A linked list is a linear data structure where each element is a separate object. Linked list elements are not stored at contiguous location, the elements are linked using pointers.

Each node of a list is made up of two items - the data and a reference to the next node. The last node has a reference to null. The entry point into a linked list is called the head of the list. It should be noted that head is not a separate node, but the reference to the first node. If the list is empty then the head is a null reference.

Course Structure