Remove Duplicates from Sorted List

Author: parshva45

Remove Duplicates from Sorted List.js

@@ -0,0 +1,33 @@
+/*Given a sorted linked list, delete all duplicates such that each element appear only once.
+
+For example,
+Given 1->1->2, return 1->2.
+Given 1->1->2->3->3, return 1->2->3.*/
+
+/**
+ * Definition for singly-linked list.
+ * function ListNode(val) {
+ *     this.val = val;
+ *     this.next = null;
+ * }
+ */
+/**
+ * @param {ListNode} head
+ * @return {ListNode}
+ */
+var deleteDuplicates = function(head) {
+    if(head){
+        var ans = new ListNode(head.val)
+        var curHead = head
+        var curAns = ans
+        while(curHead.next){
+            if(curHead.val != curHead.next.val){
+                curAns.next = new ListNode(curHead.next.val)
+                curAns = curAns.next
+            }
+            curHead = curHead.next
+        }
+        return ans
+    }
+    return head
+};