Leetcode, Add Two Numbers, Programming, Leetcode Medium, Java.
it down into smaller recursive calls. Java Code: class Solution { public ListNode addTwoNumbers(ListNode l1, ListNode l2, int carry) { if (l1 == null && l2 == null && carry == 0) { return null; } int sum = carry; if (l1 != null) { sum += l1.val; l1 = l1.next; } if (l2 != null) { sum += l2.val; l2 =