// 11. write a java program to demonstrate ArrayList
import java.util.ArrayList;
public class ArrayList11 {
	public static void main(String[] args){
		ArrayList<String> elementList = new ArrayList<>();
		elementList.add("Hydrogen");
		elementList.add("Helium");
		elementList.add("Lithium");

		System.out.println("Element at index 0: " + elementList.get(0));
		System.out.println("Element at index 1: " + elementList.get(1));
		System.out.println("Element at index 2: " + elementList.get(2));
		
		System.out.println("Periodic Table Elements: ");
		for(String element: elementList) {
			System.out.println(element);
		}

		elementList.remove(elementList.get(2));
		System.out.println("Size of elementList after removal of Lithium is: " + elementList.size());
	}
}