Leetcode Problem 2046. Sort Linked List Already Sorted Using Absolute Values

2046. Sort Linked List Already Sorted Using Absolute Values

Leetcode Solutions

In-place Reordering of Nodes

  1. Initialize two pointers, prev and curr, where prev points to the head of the list and curr points to the second node.
  2. Iterate through the list while curr is not null.
  3. If curr.val is negative, perform the following steps: a. Detach curr from its current position by setting prev.next to curr.next. b. Move curr to the head of the list by setting curr.next to head and then updating head to curr. c. Update curr to the next node in the list, which is now prev.next.
  4. If curr.val is non-negative, simply move both prev and curr to the next nodes in the list.
  5. Continue this process until curr reaches the end of the list.
  6. Return the modified head of the list.
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Convert to Array, Sort, and Rebuild

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