What is the time complexity of deleting an element from a linked list when you h
Practice Questions
Q1
What is the time complexity of deleting an element from a linked list when you have a pointer to that node?
O(1)
O(n)
O(log n)
O(n^2)
Questions & Step-by-Step Solutions
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).
