contoh program double linked list non circular

It is possible to perform operations such as inserting, deleting and traversing through the elements in a single linked list. Therefore, it forms a structure similar to a chain. As the nodes stores the address of the next node, the nodes are referring to each other.

A single linked list is a type of linked list.Ī single linked list stores the data and the address of the next node in the sequence. A node or an element consists of data and the address of another node. The program below shows Java implementation of a doubly-linked list with the addition of new nodes at the end of the list.A linked list is a linear data structure that consists of a group of nodes in a sequence. Also, the next pointer of the new node points to null, thereby making it a new last node. The previous pointer of the new node points to the last node. The below diagram shows the addition of the new node at the end of the doubly linked list.Īs shown in the above diagram, to add a new node at the end of the list, the next pointer of the last node now points to the new node instead of null. The addition of new nodes is usually done at the end of the list. The implementation of doubly linked list in Java comprises of creating a doubly-linked list class, the node class and adding nodes to the doubly linked list require that both previous and next pointers are manipulated thus imposing operational overhead.

All the operations like addition, deletion, etc.

the previous pointer, additional memory space is required to store this pointer along with the next pointer and data item.

Since there is an extra pointer in the doubly linked list i.e.

Similarly, for delete operation since we have previous as well as next pointers, the deletion is easier and we need not traverse the whole list to find the previous node as in case of the singly linked list.

You can quickly add the new node just by changing the pointers.

As each node has pointers pointing to the previous and next nodes, the doubly linked list can be traversed easily in forward as well as backward direction.

The previous pointer set to null indicates that this is the first node in the doubly linked list while the next pointer set to null indicates the node is the last node. As you can see, the previous pointer of the first node, and the next pointer of the last node is set to null.

The above diagram shows the doubly linked list.

The following figure shows a doubly linked list. The ‘Data’ is the actual element that is stored in the node. Here, “Prev” and “Next” are pointers to the previous and next elements of the node respectively. A doubly linked list has an additional pointer known as the previous pointer in its node apart from the data part and the next pointer as in the singly linked list.Ī node in the doubly linked list looks as follows: A linked list has another variation called “doubly linked list”.

Contoh program double linked list non circular