Given the `head` of a singly linked list, reverse the list, and return *the reversed list*.
Examples
Example 1
Input:
head = [1,2,3,4,5]Output:
[5,4,3,2,1]Example 2
Input:
head = [1,2]Output:
[2,1]Example 3
Input:
head = []Output:
[]Constraints
- •
The number of nodes in the list is the range [0, 5000]. - •
-5000 <= Node.val <= 5000
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