Leetcode, Add Two Numbers, Programming, Leetcode Medium, Java.
the sum by 10. Step 6: Instead of creating a new node, reuse the current nodes of l1 or l2 by updating their values to sum % 10. Step 7: Link the reused node to the result list. Step 8: Move the current pointer to the reused node. Step 9: After exiting the loop, check if there is any remaining