Merge pull request #3757 from NotADucc/0203

create csharp/0203-remove-linked-list-elements.cs

Author: Ykhan799

csharp/0203-remove-linked-list-elements.cs

@@ -0,0 +1,21 @@
+public class Solution 
+{
+    public ListNode RemoveElements(ListNode head, int val) 
+    {
+        ListNode dummy = new ListNode(0, head);
+        ListNode current = dummy;
+
+        while (current.next is not null)
+        {
+            if (current.next.val == val)
+            {
+                current.next = current.next.next;
+            }
+            else
+            {
+                current = current.next;
+            }
+        }
+        return dummy.next;
+    }
+}