Add two numbers and return the answer in the form of reversed linked list.

[AvwalKaur]

Add Two Numbers in the form of Linked List and return the answer in the form of Reversed Linked List
For eg.
If list 1: 2->4->6->null and list 2: 3->8->7->null, then the answer will be: 5->2->4->1->null
Explanation:
num1 is obtained by reversing the linked list 1 => num1=642
num2 is obtained by reversing the linked list 2 => num2=783
Therefore, the the number obtained after addition is : 642+783=1425
and hence we return the answer in the form of reversed linked list as : 5->2->4->1->null

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[siriak]

This is not a well-known algorithm, and so we cannot add it