Solution: Odd Even Linked List
Understand how to reorder a singly linked list by separating nodes at odd and even indexes while preserving their original order. Explore an in-place algorithm that uses constant extra space and linear time to efficiently rearrange nodes, connecting odd-indexed nodes first, then even-indexed nodes, with detailed explanations of pointer updates and complexity analysis.
We'll cover the following...
Statement
Given the head of a singly linked list, rearrange the nodes so that all nodes at odd indexes appear first, followed by all nodes at even indexes.
The first node in the list is considered at odd index 1, the second at even index 2, and so on.
Within the odd group and the even group, the relative order of the nodes must remain the same as in the original list.
Return the head of the reordered linked list.
Note: You must solve the problem in
...