Arrays Linked Lists Questions Medium
To find the middle element of a linked list in five passes, you can follow the below steps:
1. Initialize two pointers, slow and fast, to the head of the linked list.
2. Traverse the linked list using the fast pointer, moving two nodes at a time, and the slow pointer, moving one node at a time.
3. Keep track of the number of passes made.
4. Continue traversing until the fast pointer reaches the end of the linked list or the number of passes reaches five.
5. If the number of nodes in the linked list is odd, the slow pointer will be pointing to the middle element after five passes.
6. If the number of nodes in the linked list is even, the slow pointer will be pointing to the second middle element after five passes.
7. Return the value of the node pointed by the slow pointer as the middle element.
By using this approach, you can find the middle element of a linked list in five passes.