What is the time complexity of deleting an element from a linked list when you h

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Question: What is the time complexity of deleting an element from a linked list when you have a pointer to that node?

Options:

Correct Answer: O(1)

Solution:

If you have a pointer to the node to be deleted, the deletion can be done in constant time, O(1).

What is the time complexity of deleting an element from a linked list when you have a pointer to that node?

What is the time complexity of deleting an element from a linked list when you have a pointer to that node?

Step 1: Understand that a linked list is a collection of nodes where each node points to the next node.
Step 2: Recognize that when you have a pointer to the node you want to delete, you can access it directly.
Step 3: To delete the node, you need to change the pointer of the previous node to point to the next node instead of the node being deleted.
Step 4: If you have the pointer to the node to be deleted, you can copy the data from the next node into the current node and then remove the next node.
Step 5: Since these operations (changing pointers and copying data) take a fixed amount of time, the time complexity is O(1).

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