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Author: 10coder

RemoveLinkedListElements.java

@@ -0,0 +1,29 @@
+public class RemoveLinkedListElements {
+
+    public ListNode removeElements(ListNode head, int val) {
+        if(head==null) {
+            return head;
+        }
+
+        //skip heads with same value
+        while(head!=null && head.val==val) {
+            head=head.next;
+        }
+
+        ListNode temp=head;
+
+        //delete same value nodes
+        while(temp!= null && temp.next!=null) {
+
+            //for the corner case 1 2 2 1
+            //we have to remove all the middle elements
+
+            while(temp.next!=null && temp.next.val==val) {
+                temp.next=temp.next.next;
+            }
+            temp=temp.next;
+        }
+
+        return head;
+    }
+}