compact

//array is the array and i is the length of the array.
public int[] compactThis(int[] array, int i)
{
    //will add the int given by check int to the specified cell
    int addInt = 0;

    //checks if cell contains a 0
    int checkInt = 0;

    //stores value of non zero cell
    int num = 0;

    for(int loop = 0; loop<i; loop++)
    {
        if(array[loop] !=0)
        {
            num = array[loop];
            array[addInt] = num;
            addInt++;
        }
        else
            checkInt++;
    }
return array;
}