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Reverse Linked List II

Solution Approach
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Mediumlinked-listExpected: O(n) time, O(1) space
linked-list

Problem

Given the head of a singly linked list and two integers left and right, reverse the nodes from position left to position right.

Example 1:

Input: head = [1, 2, 3, 4, 5], left = 2, right = 4
Output: [1, 4, 3, 2, 5]

Example 2:

Input: head = [5], left = 1, right = 1
Output: [5]
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