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Add Two Numbers.js
46 lines (46 loc) · 1.09 KB
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Add Two Numbers.js
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/**
* Definition for singly-linked list.
* function ListNode(val) {
* this.val = val;
* this.next = null;
* }
*/
/**
* @param {ListNode} l1
* @param {ListNode} l2
* @return {ListNode}
*/
var addTwoNumbers = function(l1, l2) {
var inc = 0, res = l1, pre1 = l1, pre2 = l2;
while(l1 !== null && l2 !== null){
l1.val += l2.val + inc;
inc = Math.floor(l1.val/10);
l1.val %= 10;
pre1 = l1, pre2 = l2;
l1 = l1.next;
l2 = l2.next;
}
if(l1 === null){
pre1.next = l2;
while(l2 !== null){
l2.val += inc;
inc = Math.floor(l2.val/10);
l2.val %= 10;
pre2 = l2;
l2 = l2.next;
}
if(inc > 0) pre2.next = new ListNode(1);
}
else if(l2 === null){
while(l1 !== null){
l1.val += inc;
inc = Math.floor(l1.val/10);
l1.val %= 10;
pre1 = l1;
l1 = l1.next;
}
if(inc > 0) pre1.next = new ListNode(1);
}
else if(inc >0) pre1.next = new ListNode(1);
return res;
};