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Grokking the Coding Interview Patterns in Python

Solution: Reverse Linked List II

Explore reversing a sublist within a singly linked list by directly manipulating node pointers in place. Learn step-by-step how to use a dummy node and pointers to efficiently reverse nodes from left to right with O(n) time and O(1) space complexity. This lesson helps you implement and optimize linked list algorithms for coding interviews.

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Statement

Given a singly linked list with nn nodes and two positions, left and right, the objective is to reverse the nodes of the list from left to right. Return the modified list.

Constraints:

  • 1≤1 \leq n ≤500\leq 500
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