Circular Singly Linked List (Deleting the Last Node)

Introduction to Deleting the Last Node of a Circular Singly Linked List

In this section, we will learn how to delete the last node of a circular singly linked list. The presenter explains the procedure and provides code examples.

Procedure for Deleting the Last Node

• To delete the last node, start by keeping a temporary pointer that points to the first node of the list.

• Use a while loop to move the temporary pointer towards the right until it points to the second last node.

• Update temp->next with tail->next, which is the address of the first node in the list.

• Free the last node using free() function.

• Update tail pointer to point to the new last node.

Time Complexity

• The time complexity of these operations is O(n), where n is the length of the list, due to traversal involved.

Code Example

• The presenter shows a complete code example for deleting the last node in Code Blocks.

Execution Example

• An execution example is shown where user input creates a circular singly linked list with multiple nodes. The deletion process is demonstrated, and before and after lists are printed.

Overall, this section provides an explanation of how to delete the last node in a circular singly linked list and includes code examples and an execution demonstration.