package arrayplay;

public class Primes {
    public static void main(String[] args)
    {
        int [] primes = new int[4];

        primes [0] = 2;
        primes [1] = 3;
        primes [2] = 5;
        primes [3] = 7;

        System.out.println("Length of primes array = " + primes.length);
        System.out.println("first prime = " + primes[0]);
        System.out.println("last prime = " + primes[3]);
        System.out.println("last prime = " + primes[primes.length-1]);

        System.out.println("\nThe initial array");
        int i = 0;
        while ( i < primes.length) {
        System.out.println(primes[i]);
        i = i + 1;
        }

        int temp = primes [0];
         primes[0] = primes[primes.length-1];
         primes[primes.length-1] = temp;

         System.out.println("\nThe final array . . . ");
         for ( int x = 0; x < primes.length; x = x + 1) {
             System.out.println(primes[x]);
         }

    }
    }