Reverse Array " What I am doing wrong"

[Peach2010]

public class ReverseArray
{
    //declare an array variable
    //do not call new yet!

	int[] array = new int[100];
	int a;
	int[] getCopy = new int[array.length];


    /**
     * Constructor
     *
     * Reads in int values and stores them in an array.
     *
      The first int in the input is the number of values to follow.
      Use that value to create a new array of that size. Read in
     only that many values.
     *
     * The rest of the input should be stored in the array.
     */
    public ReverseArray(Reader input)
    {



		for (int i = 0; i < array.length; i++);






    }

    /**
     * Reverses the contents of the array.
     *
     * When reversed the array elements are changed so that the first
     * element becomes the last element, the second element becomes
     * the second to last element, and so on, with the old last element
     * now first.
     *
      You must change the way they are stored in the array. Do not
      create a second array; just rearrange the elements within the
    array you have. (Hint: Swap elements that need to change places.)
     *
     * HINT: you only need to loop over half of the array.
     * HINT: Think about what the index of the last element of the array.
     *       You want to swap that index with the first element.
     *       What is the index of the element you want to swap with the
     *       second element?  See a pattern.  Use the length and a simple
     *       formula to calculate the index being used.
     *
     */
    public void reverse()
    {
        for (int a = array.length -1; a >= 0; a--)
        {

       System.out.print(array[a] + "");
    }
    }
    /**
     * Creates and returns a copy of the integer array.
     *
     * NOTE: This is a copy of the array, that is, a new
     * array object with the same values stored in it.
     *
     * DO NOT return a reference to the array.
     *
     * @return a copy of the array
     */
    public int[] getCopy()
    {
      for( a = 0; a <array.length;a++);

      {
      getCopy[a]=array[a];
      }

        return getCopy;
    }

    /**
     * Swaps the elements in position a and position b in the array.
     *
     * @param a
     * @param b
     */
    private void swap(int a, int b)
    {
        //HINT:  You will need to use a temporary variable to
        //swap the values correctly.  Think carefully about the
        //order in which the operations must occur.
    	
    	
    
    
    
    
    
    
    }

  }

[Peach2010]

Sorry i forgot this in my previous code i do not need a main function because there is a junit test file that goes along with it

int temp;

    		temp = array[a];
    		array[a] = array[b];
    		array[b] = temp;

[apines]

You didn't finish implementing all the methods yet, how do you expect it to work?

[Peach2010]

i thought i did i forgot to add the swap part but i replied to the code with it so... can you help

[apines]

Sure, let's start with the constructor:

public ReverseArray(Reader input)
{
   for (int i = 0; i < array.length; i++);
}

It's counting from - to array.length, and is doing nothing. What exactly are you trying to do?

[Peach2010]

i am trying to read in int values and stores them in an array

[apines]

Doing an empty for loop will not do that. You need to use the Reader input parameter that was given to you in that method.

[Peach2010]

ok i dont know how to do that so let me look it up

[apines]

A good start will be here.