Added till 18th

LinkedListDemo.java

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+// 13. write a java program to demonstrate Linked List
+
+import java.util.LinkedList;
+
+public class LinkedListDemo {
+    public static void main(String[] args) {
+
+        LinkedList<String> linkedList = new LinkedList<>();
+
+        linkedList.add("Element A");
+        linkedList.add("Element B");
+        linkedList.add("Element C");
+
+        System.out.println("Element at index 0: " + linkedList.get(0));
+        System.out.println("Element at index 1: " + linkedList.get(1));
+        System.out.println("Element at index 2: " + linkedList.get(2));
+
+        System.out.println("LinkedList Elements:");
+        for (String element : linkedList) {
+            System.out.println(element);
+        }
+
+        linkedList.remove("Element B");
+        System.out.println("Size of linked list after removal: " + linkedList.size());
+    }
+}