/*
read array data from a file; call a method to change array value
(reverse the order of elements)

*/

import java.util.Scanner;
class ReverseArrayDemo
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);

		double[] vals = new double[100];
		int size = 0;

		while(input.hasNextDouble())
		{
			vals[size] = input.nextDouble();
			size ++;
		}

		// output all elements of the array to monitor
		outPutArray(vals, size);

		System.out.print("\n\nsize = " + size + "\n\n");

		Reverse(vals, size);

		// output all elements of the array to monitor
		outPutArray(vals, size);

		System.out.println("\n\n\n\n");
	}

	//-------------------------------------
	private static void outPutArray(double[] arr, int size)
	{
			for(int i=0; i<size; i++)
			{
				System.out.print(arr[i] + "   ");
			}
	}
	//-------------------------------------
	// p.129
	private static void Reverse(double[] score, int size)
	{
		double temp;
		for (int k = 0; k<size/2; k++)
		{
			temp = score[k];
			score[k] = score[size-1-k];
			score[size-1-k] = temp;
		}
	}

}