/* ArrayElementArguments.java
   Craig Persiko
   Sample program for CS 111A
   Demonstrates how to pass an element of an array into a method.
*/

class ArrayElementArguments
{
  public static void main(String[] args)
  {
    int i;
    int[] a = new int[4];

    a[0] = 1;
    for(i=0; i<a.length-1; i++)
      a[i+1] = foo(a[i]);
    /* Notice above loop condition is i<3 
       because [i+1] is used as an array index.
       The array index must always be less than the array size.
    */  
    for(i=0; i<4; i++)
      System.out.println(a[i]);
  }

  // returns 2 times x
  public static int foo(int x)
  {
    return x * 2;
  }
}

/* Output:

[cpersiko@milhouse ~]$ java ArrayElementArguments
1
2
4
8
[cpersiko@milhouse ~]$ 

*/