leetcode 2 Add two numbers

public class Solution {public ListNode addTwoNumbers(ListNode l1, ListNode l2) {ListNode dummy = new ListNode(-1);ListNode cur = dummy;int carry = 0;while (l1 != null || l2 != null) {int d1 = l1 == null ? 0 : l1.val;int d2 = l2 == null ? 0 : l2.val;int sum = d1 + d2 + carry;carry = sum >= 10 ? 1 : 0;cur.next = new ListNode(sum % 10);cur = cur.next;if (l1 != null) l1 = l1.next;if (l2 != null) l2 = l2.next;}if (carry == 1) cur.next = new ListNode(1);return dummy.next;}
}

转载于:https://www.cnblogs.com/wangkun1993/p/6352265.html

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