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Home » DS » Linked Lists » Short Note on Singly Circular Linked List
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Short Note on Singly Circular Linked List

By Dinesh Thakur

The advantage of using Circular Linked List is the last null pointer is replaced and the pointer field of the last node points to the first node, due to this circular arrangement the traversing become quite easier.

The insertion and deletion in the first and middle are same as singly linked list except the last node.
Insertion

    Insertion in the last node

To insert a node in the last position, insert the new node after the current last node, and then change the pointer field of the new node to point to the first node. Let the last node be last, the new node to be inserted to be new, the first node in the list to be first. The pointers used are ‘data’ for the data field, ‘next’ to the pointer field, the data to be inserted is ‘X ’then the insertion is

                                     Last ­? next = new

                                     New ? next =first

 Deletion

    Deletion in the last node

To delete a node in the last position, change the pointer field of the previous node to the current last to point the first node. Let the last node be last, the previous node to the current last node to be pre, the first node in the list to be first. The pointers used are ‘data’ for the data field, ‘next’ to the pointer field, the data to be inserted is ‘X ’then the deletion is                

                                  Prev ? next = first

You’ll also like:

  1. Short Note on Single Linked List
  2. What is Singly-circularly-linked list
  3. Singly Linked List in Java Example
  4. What is Circular Linked Lists
  5. Circularly-linked list vs. linearly-linked list
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Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

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