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

               }
   }