import java.io.*;
import java.util.*;

public class Reverse {

	
	public static void main(String[] args) throws FileNotFoundException {
		int size;
		
		Scanner input = new Scanner(new File("reverse.data"));
		
		size = input.nextInt();
		System.out.println("Reading file of size " + size);
		System.out.println();
		
		int[] x = new int[size];
		
		for (int i=0; i<x.length; i++) {
			x[i] = input.nextInt();
		}
		
		System.out.println("Original array: " + Arrays.toString(x));
		System.out.println();
		
		reverse(x);
		
		System.out.println("Reversed array: " + Arrays.toString(x));

	}
	
	//------------------------------------------------------
	public static void reverse (int[] x) {
		for (int i = 0; i < x.length/2; i++) {
			swap (x, i, x.length-1-i);
		}
	}
	
	//-----------------------------------------
	// Swaps element i with element j
	public static void swap (int[] x, int i, int j) {
		int temp = x[i];
		x[i] = x[j];
		x[j] = temp;
	}

}