This program moves all the zeros to the end of array.

MoveZeroes2End.java

/**
 * Created with IntelliJ IDEA.
 * User: Ravi
 * Date: 10/13/13
 * Time: 9:56 PM
 * To change this template use File | Settings | File Templates.
 */
public class MoveZerosDemo {
    public static void main(String[] args)
    {
        int[] array = {6,0,1,0,0,4,3,0,5,2};
        moveZerosToEnd( array );
        for( int i = 0; i < array.length; i++ )
        {
            System.out.print( array[i] + " ");
        }
    }
    public static void moveZerosToEnd(int[] array)
    {
        int resInd = 0;// to keep track of non-zero elements in the final array
        int i;
        for( i = 0; i < array.length; i++ )
        {
            if( array[i] > 0 )
            {
                if( i != resInd ) //Avoid self copy
                    array[resInd] = array[i];
                resInd++;
            }
        }
        //Fill the remaining entries with 0
        while( resInd < array.length )
        {
            array[resInd] = 0;
            resInd++;
        }
    }
}