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 primes ="+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]);
        }

    }
}