Solution: Odd Even Linked List
Understand how to rearrange a singly linked list so that all nodes at odd indexes come first, followed by even-indexed nodes. This lesson guides you through an in-place algorithm that preserves node order, uses constant extra space, and runs in linear time.
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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