update solution 002 Solution.js [JavaScript]

Author: Mcnwork2018

solution/002.Add Two Numbers/Solution.js

@@ -0,0 +1,36 @@
+/**
+ * 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 c1 = l1,c2 = l2,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 = (sum - sum%10)/10;
+      if(!c3){
+          l3 = new ListNode(sum%10);
+          c3 = l3;
+      }else{
+          c3.next = new ListNode(sum%10);
+          c3 = c3.next;
+      }
+  }
+  return l3;
+}