Question
Copy all the elements of one array into another array in reverse order.
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Code
import java.util.Scanner;
public class copyArraytoanotherArrayInReverseOrder
{
public static void main(String[] args)
{
/* Initialize array */
int [] arr1;
int[] arr2;
int n=0,i=0;
Scanner sc = new Scanner(System.in);
System.out.println("Enter a no. of elements in the array");
n = sc.nextInt();
System.out.println("Enter numbers in array");
arr1=new int[n];
for(i=0;i< n;i++)
{
arr1[i]=sc.nextInt();
}
//Create another array arr2 with size of arr1
arr2 = new int[arr1.length];
int j=arr1.length-1;
//Copying all elements of one array into another in reverse order
for ( i = 0; i < arr1.length; i++)
{
arr2[i] = arr1[j];
j--;
}
/*Displaying elements of array arr1*/
System.out.println("Elements of original array: ");
for ( i = 0; i < arr1.length; i++)
{
System.out.print(arr1[i] + " ");
}
System.out.println();
/*Displaying elements of array arr2 */
System.out.println("Elements of array in reverse order: ");
for ( i = 0; i < arr2.length; i++)
{
System.out.print(arr2[i] + " ");
}
}
}