Reverse Linked List
LINKED LIST
RECURSION

Problem

Given the head of a singly linked list, reverse the list and return the head of the reversed list.

Examples:

// 1 -> 2 -> 3 -> 4 -> 5 -> NULL reverseList([1,2,3,4,5]) // [5,4,3,2,1] // 5 -> 4 -> 3 -> 2 -> 1 -> NULL reverseList([3,4,5]) // returns [5,4,3] reverseList([1]) // returns [1]

Time Complexity

The time complexity of reversing a linked list is O(n), where n is the number of nodes in the list. This can be achieved either iteratively or recursively.

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