【LeetCode】两数相加

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分类专栏： LeetCode 文章标签： LeetCode

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Java code

class Solution {
    public ListNode addTwoNumbers(ListNode l1, ListNode l2) {
        int n = 0;
        int n1 = 0;
        int n2 = 0;
        int m = 0;
        ListNode temp = new ListNode(0);
        ListNode l = temp;
        while(l1 != null || l2 != null) {
            if(l1 != null) {
                n1 = l1.val;
                l1 = l1.next;
            }
            if(l2 != null) {
                n2 = l2.val;
                l2 = l2.next;
            }
            n = n + n1 + n2;
            m = n % 10;
            temp.next = new ListNode(m);
            temp = temp.next;
            n1 = 0;
            n2 = 0;
            if(n >= 10) {
                n = 1;
            }
            else {
                n = 0;
            }
        }
        if(n == 1) {
            temp.next = new ListNode(1);
        }
        return l.next;
    }
}