Time: 133 ms (10.89%), Space: 44.7 MB (9.71%) - LeetHub

Author: abdallahrabiaa

83-remove-duplicates-from-sorted-list/83-remove-duplicates-from-sorted-list.js

@@ -0,0 +1,28 @@
+/**
+ * Definition for singly-linked list.
+ * function ListNode(val, next) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.next = (next===undefined ? null : next)
+ * }
+ */
+/**
+ * @param {ListNode} head
+ * @return {ListNode}
+ */
+var deleteDuplicates = function(head) {
+    if(!head) return null;
+    let prev = head; 
+    let current= head.next;
+ while(current){
+     if(current.val==prev.val){
+         prev.next= current.next;
+     }else {
+         prev= prev.next;
+     }
+     
+     current=current.next;
+     
+ }
+    
+    return head
+};