Solution: Odd Even Linked List
Understand how to reorder a singly linked list in-place to group all odd-indexed nodes first and even-indexed nodes second while preserving relative order. This lesson helps you apply pointer manipulation techniques to solve this problem efficiently with O(n) time complexity and no extra space.
We'll cover the following...
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
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