import java.util.Scanner;

import java.util.Arrays;

public class PredefinedArraySorting {

static void display(int a[]){

int c=a[0];

a[0]= a[a.length-1];

a[a.length-1]= c;

for(int i=0; i<a.length; i++){

System.out.print(a[i] + " ");

}

}

static void swapValues(int a[]){

for(int i=0; i<a.length; i++){

System.out.print(a[i] + " ");

}

}

public static void main(String[] args) {

Scanner sc= new Scanner(System.in);

//ARRAY SIZE AND ELEMENTS INPUT

System.out.print("Enter array size: ");

int size= sc.nextInt();

int arr[]= new int[size];

System.out.print("Enter " + size + " numbers: ");

for(int i=0; i<arr.length; i++){

arr[i]= sc.nextInt();

}

System.out.print("Original array: ");

display(arr);

System.out.println();

//PREDEFINED STATIC METHOD sort() OF CLASS ARRAYS (used to sort array in ascending order)

Arrays.sort(arr);

System.out.print("Sorted array: ");

display(arr);

System.out.println();

//PRINTING FIRST, MID AND LAST ELEMENTS AFTER SORTING THE ARRAY

System.out.println("Elements of sorted array: ");

int first= arr[0];

int mid= arr[arr.length/2];

int last= arr[arr.length-1];

System.out.println("First: " + first);

System.out.println("Mid: " + mid);

System.out.println("Last: " + last);

//CALLING METHOD TO SWAP FIRST AND LAST ELEMENT

swapValues(arr);

}

}