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]);
    }
     }
}