public class SetPlanesGeneric<T> {
    private T[] _places;

    public int Count() {
        return _places.length;
    }

    public SetPlanesGeneric(int count) {
        _places = (T[]) (new Object[count]);
    }

    public int Insert(T plane) {
        for (int i = 0; i < _places.length; i++) {
            if (_places[i] == null) {
                _places[i] = plane;
                return i;
            }
        }
        return -1;
    }

    public int Insert(T plane, int position) {
        int index = position;

        while (_places[index] != null && index < _places.length) index++;

        if (index == _places.length) return -1;
        for (int i = index; i > position; --i) _places[i] = _places[i - 1];

        _places[position] = plane;
        return position;
    }

    public T Remove(int position) {
        if (position >= _places.length) return null;
        T res = _places[position];
        _places[position] = null;
        return res;
    }

    public T Get(int position) {
        return _places[position];
    }
}