import java.util.*;

//b.	Write the definition of the method doubleArray that initializes the elements of  beta to two times the corresponding elements of alpha.
public class Testing_arrays {

	static Scanner console = new Scanner(System.in
		);

    public static void main(String[] args) {

		int [] beta = new int[20];
		int [] gamma = {11, 13, 15, 17};

    	int [] alpha = new int[20];
    	int i, j;

    	System.out.println("Enter twenty values.");

    	inputArray(alpha);
    	doubleArray(beta);


    	System.out.println("The value of array [2] is " + alpha[2]);
		System.out.println("The value of array beta [2] is "+ beta[2]);


public int inputArray(int[] infoArray)
	{
		for (i = 0; i < infoArray.length; i++)
    	{
    		infoArray[i] = console.nextInt();
    	}

	}
public int doubleArray(int[] infoDouble)
{
	for (i = 0; i < alpha.length; i++)
    		infoDouble[i] = alpha[i]*2;
}

}
}