LeetCode-两数相加-JavaScript写法

function addTwoNums(l1,l2){  var c1 = l1,c2 = l2;  var c3,l3,carry=0;  while(c1||c2||carry){    var v1 = 0,v2 = 0;    if(c1){      v1 = c1.val;      c1 = c1.next;    }    if(c2){      v2 = c2.val;      c2 = c2.next;    }    var sum = v1 + v2 +carry;    carry = Math.floor(sum/10);    if(!c3){      l3 = new ListNode(sum%10);      c3 = l3;    }else{      c3.next = new ListNode(sum%10);      c3 = c3.next;    }  }  return l3;}function ListNode(val) {      this.val = val;      this.next = null;}var a = {  val: 2,  next: {    val: 4,    next: {      val: 3,      next: null    }  }};var b = {  val: 5,  next: {    val: 6,    next: {      val: 4,      next: null    }  }};console.log(addTwoNums(a,b));