Odd Even Linked List
Explore how to rearrange a singly linked list so that nodes at odd positions come before those at even positions, maintaining their original order within each group. This lesson helps you implement an in-place algorithm with linear time complexity and constant space usage, enhancing your skills in linked list manipulation.
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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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