package arraylistplay;

import java.util.ArrayList;
/* 
* A program that prints out a list and in reverse order. 
 */
public class primes {
    public static void main(String[]args){
        ArrayList<Integer> primes = new ArrayList<>();
         primes.add(2);
         primes.add(3);
         primes.add(5);
         primes.add(7);

         System.out.println("size of primes list = " + primes.size());
         System.out.println("first prime = " + primes.get(0));
         System.out.println("last prime = " + primes.get(3));
         System.out.println("last prime = " + primes.get(primes.size()-1));

         System.out.println("\nThe initial list ...");
         for(Integer prime : primes){
             System.out.println(prime);
         }

         int temp = primes.get(0);
         primes.set(0, primes.get(primes.size()-1));
         primes.set(primes.size()-1,temp);

         System.out.println("\nThe final list ...");
         for( Integer prime : primes){
             System.out.println(prime);
         }

    }
}