Odd Even Linked List
Explore how to reorder a singly linked list by grouping nodes at odd indexes first followed by even indexes while preserving their relative order. Learn to implement this rearrangement using an in-place algorithm that runs in linear time with constant extra space, enhancing your linked list manipulation skills.
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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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