//Program manipulating arrays
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 prime arrays = "+ 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]);
        }
    }
}