public boolean add(T element) {
    if(element == null || contains(elements) {
        return false;
    }
    if(elements.length == size()) {
        resize(elements.length * 2);
    }
    for(int i = 0; i < elements.length; i++) {
        if(elements[i] == null || element.compareTo(elements[i]) < 0) {
            for(int j = i; j < elements.length - 1; j++) {
                elements[j + 1] = elements[j];
            }
            elements[i] = element;
        }
    }
    size++;
    return true;
}