In a doubly linked list, how many pointers need to be updated to insert a new node at the end? Group of answer choices3421
Question
In a doubly linked list, how many pointers need to be updated to insert a new node at the end? Group of answer choices3421
Solution
To insert a new node at the end of a doubly linked list, you need to update 2 pointers.
Here are the steps:
- Create a new node.
- If the list is empty, make the new node as the head and tail of the list.
- If the list is not empty, make the next pointer of the current tail node point to the new node.
- Make the previous pointer of the new node point to the current tail node.
- Update the tail pointer to the new node.
So, the answer is 2.
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