Contents
- 1 How many pointers do you need to delete a node from the end of a singly linked list?
- 2 How can we delete any specific node from the linked list?
- 3 When a node is deleted from the beginning of the linked list the begin pointer will point to?
- 4 Can you create a doubly linked list using only one pointer with every node?
- 5 What’s the fastest way to delete a node?
- 6 Do you need a pointer to the head node?
How many pointers do you need to delete a node from the end of a singly linked list?
You need to write a function to delete that node from linked list. Your function will take only one argument: pointer to the node which is to be deleted.
How can we delete any specific node from the linked list?
To delete a node from the linked list, we need to do the following steps.
- Find the previous node of the node to be deleted.
- Change the next of the previous node.
- Free memory for the node to be deleted.
What will happen if the node to be deleted is the last node pointed by ptr in a doubly linked list?
Deletion of the last node in a doubly linked list needs traversing the list in order to reach the last node of the list and then make pointer adjustments at that position. If the list is already empty then the condition head == NULL will become true and therefore the operation can not be carried on.
What is the under flow condition while deleting a node from a linked list?
Underflow is a condition that occurs when we try to delete a node from a linked list that is empty. This happens when START = NULL or when there are no more nodes to delete. Note that when we delete a node from a linked list, we actually have to free the memory occupied by that node.
When a node is deleted from the beginning of the linked list the begin pointer will point to?
Deleting a node from the beginning of the list is the simplest operation of all. It just need a few adjustments in the node pointers. Since the first node of the list is to be deleted, therefore, we just need to make the head, point to the next of the head.
Can you create a doubly linked list using only one pointer with every node?
Is it possible to create a doubly linked list using only one pointer with every node. (B) Yes, possible by storing XOR of addresses of previous and next nodes.
How to delete second node in linked list?
Now Delete the second Node (i+1) // it doesn’t require pointer to the previous node. then there should be a check in program whether the given node is last node or not. If there are other elements that are pointing to the next node which will be copied to the current node and then deleted, then this operation will introduce a bug.
Can a pointer to a node be deleted?
Given a pointer to a node to be deleted, delete the node. Note that we don’t have a pointer to the head node. Recommended: Please solve it on “ PRACTICE ” first, before moving on to the solution. A simple solution is to traverse the linked list until you find the node you want to delete.
What’s the fastest way to delete a node?
The fast solution is to copy the data from the next node to the node to be deleted and delete the next node. Something like the following. This solution doesn’t work if the node to be deleted is the last node of the list. To make this solution work, we can mark the end node as a dummy node.
Do you need a pointer to the head node?
But this solution requires a pointer to the head node, which contradicts the problem statement. The fast solution is to copy the data from the next node to the node to be deleted and delete the next node. Something like the following. This solution doesn’t work if the node to be deleted is the last node of the list.