[LeetCode] 2. Add Two Numbers about leetcode

[uwspstar]

JS 解法

var addTwoNumbers = function (l1, l2) {
    let dummy = new ListNode(0);
    let p = dummy;
    let p1 = l1;
    let p2 = l2;
    let carry = 0;
    while (p1 || p2) {
        let sum = carry;
        sum += p1 ? p1.val : 0;
        sum += p2 ? p2.val : 0;
        carry = parseInt(sum / 10);
        p.next = new ListNode(sum % 10);
        p = p.next;

        p1 ? p1 = p1.next : {};
        p2 ? p2 = p2.next : {};
    }
    if (carry > 0) p.next = new ListNode(carry) // do not forget this one
    return dummy.next;
};