Given pointer to a node X in a singly linked list. Only one pointer is given, pointer to head node is not given, can we delete the node X from given linked list?Possible if X is not last node. Use following two steps (a) Copy the data of next of X to X. (b) Delete next of X.Possible if size of linked list is even.Possible if size of linked list is oddPossible if X is not first node. Use following tw
Question
Given pointer to a node X in a singly linked list. Only one pointer is given, pointer to head node is not given, can we delete the node X from given linked list?Possible if X is not last node. Use following two steps (a) Copy the data of next of X to X. (b) Delete next of X.Possible if size of linked list is even.Possible if size of linked list is oddPossible if X is not first node. Use following tw
Solution
Given a pointer to a node X in a singly linked list, we can delete the node X from the list without having a pointer to the head node, but only if X is not the last node. This is because we don't have a pointer to the previous node, so we can't update its 'next' pointer. Here are the steps to delete the node:
- Copy the data from the next node (X's successor) to X. Now X contains the data of its successor and the successor contains a duplicate piece of data.
- Delete X's successor. This can be done by setting the 'next' pointer of X to the next node of its successor.
The size of the linked list (even or odd) doesn't affect the possibility of deletion. Also, it's possible to delete X if it's not the first node, but this condition is not necessary because we don't need a pointer to the head node or the previous node for the deletion.
Similar Questions
What is the correct sequence of steps to delete a node at the head of a linked list? Question 27Select one: 1. Update the head pointer to point to the next node, 2. Free the memory allocated to the head node, 3. Return the updated linked list 1. Update the next pointer of the head node to null, 2. Free the memory allocated to the head node, 3. Update the head pointer to point to the next node 1. Free the memory allocated to the head node, 2. Update the head pointer to point to the next node, 3. Return the updated linked list
Delete the node at a given position in a linked list and return a reference to the head node. The head is at position 0. The list may be empty after you delete the node. In that case, return a null value.ExampleAfter removing the node at position , .Function DescriptionComplete the deleteNode function in the editor below.deleteNode has the following parameters:- SinglyLinkedListNode pointer llist: a reference to the head node in the list- int position: the position of the node to removeReturns- SinglyLinkedListNode pointer: a reference to the head of the modified listInput FormatThe first line of input contains an integer , the number of elements in the linked list.Each of the next lines contains an integer, the node data values in order.The last line contains an integer, , the position of the node to delete.Constraints, where is the element of the linked list.Sample Input8206219741593Sample Output20 6 2 7 4 15 9ExplanationThe original list is . After deleting the node at position , the list is .
Given a doubly Linked list and a position. The task is to delete a node from a given position (position starts from 1) in a doubly linked list and return the head of the doubly Linked list.
How is the deletion of a node at the end of a Doubly Linked List different from a Singly Linked List?a)It does not require any pointer update.b)It involves updating two pointers.c)It requires traversing the entire list.d)It requires finding the middle of the list
A linked list whose last node points back to both the head node and the previous node instead of containing the null pointer ____________
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