easyLinked ListPattern: Linked List Reversal
Reverse Linked List Solution
Problem Statement
Given the head of a singly linked list, write a function to reverse the linked list.
Examples
Example 1:
Input:{"head":{"value":1,"next":{"value":2,"next":{"value":3,"next":null}}}}
Output:{"head":{"value":3,"next":{"value":2,"next":{"value":1,"next":null}}}}
Explanation: Reversing a linked list with values 1, 2, 3 results in a list with values 3, 2, 1
Constraints
- Do not modify the original list.
- The function should handle an empty list as input.
- The function should handle a single-node list as input.
Time: O(N) Space: O(1)
The optimized approach involves using a two-pointer technique to reverse the linked list in-place with a time complexity of O(n) and a space complexity of O(1)
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