Challenge 5: Reverse a Linked List

Problem statement

You have to write the Reverse function, which starts iterating from the head and swaps nodes of the list, so that in the end, it returns a string that contains a reversed list.

Input

The input is a linked list.

Output

The reversed linked list is the output.

Sample input

LinkedList = 0->1->2->3-4

Sample output

LinkedList = 4->3->2->1->0