Which of the following algorithm is the optimal way to find the middle element of the linked list?radio_button_uncheckedFind the length of the Linked List and then traverse again to the n/2th Noderadio_button_unchecked Fast and slow pointer methodradio_button_uncheckedFind the distance of all nodes and print the middle nodesradio_button_uncheckedNone of these
Question
Which of the following algorithm is the optimal way to find the middle element of the linked list?radio_button_uncheckedFind the length of the Linked List and then traverse again to the n/2th Noderadio_button_unchecked Fast and slow pointer methodradio_button_uncheckedFind the distance of all nodes and print the middle nodesradio_button_uncheckedNone of these
Solution
The optimal way to find the middle element of the linked list is the "Fast and slow pointer method".
Here's why:
- Initialize two pointers, slow and fast, at the head of the linked list.
- Move the slow pointer by one node at a time, and the fast pointer by two nodes at a time.
- When the fast pointer reaches the end of the list, the slow pointer will be at the middle of the list.
This method only requires a single traversal of the list, making it more efficient than the other options.
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