Time: 146 ms (58.38%), Space: 47 MB (21.45%) - LeetHub

Author: mauricechouam

2-add-two-numbers/2-add-two-numbers.js

@@ -0,0 +1,34 @@
+/**
+ * Definition for singly-linked list.
+ * function ListNode(val, next) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.next = (next===undefined ? null : next)
+ * }
+ */
+/**
+ * @param {ListNode} l1
+ * @param {ListNode} l2
+ * @return {ListNode}
+ */
+var addTwoNumbers = function(l1, l2) {
+    let head = new ListNode(); 
+    curr = head;
+    remainder = 0;
+    
+    while(l1 != null || l2 != null){
+        let x = l1 !== null?l1.val:0
+        let y = l2 !== null?l2.val:0
+        sum = x+y+remainder
+        remainder = Math.floor(sum/10)
+        
+        curr.next = new ListNode(sum%10)
+        curr = curr.next
+        
+        if(l1 !== null) l1 = l1.next
+        if(l2 !== null) l2 = l2.next
+    }
+    
+    if(remainder>0) curr.next = new ListNode(1)
+    
+    return head.next
+};