96vksinghcort
diff --git a/‎21-30/21. Merge Two Sorted Lists.js
Copy file name to clipboard
+11Lines changed: 11 additions & 0 deletions b/‎21-30/21. Merge Two Sorted Lists.js
Copy file name to clipboard
+11Lines changed: 11 additions & 0 deletions
@@ -1,21 +1,32 @@
 var mergeTwoLists = function(list1, list2) {
+    // add the list node to a variable
     let l = new ListNode(0);
     let head = l
+    // create a while loop and check if the argument (list1 and list2) is not empty
     while(list1 != null && list2 != null){
+        // if the value of list1 is less than list2
         if(list1.val < list2.val){
+            //add the value to the node list of 1
             l.next  = list1
             list1 = list1.next
         }else{
+            // if not add the value to the node list of 2
             l.next  = list2
             list2 = list2.next
         }
+
+        //move on to the next node
         l = l.next
     }
+
+    //add the remaining node values to the merged list
     if (list1 == null) {
         l.next = list2;
     }
     else {
         l.next = list1;
     }
+
+    //return the combined sorted list
     return head.next
 };