namespace ProjectLainer.Generics
{
    internal class SetGeneric<T>
    where T : class
    {
        private readonly T?[] _places;
        public int Count => _places.Length;
        public SetGeneric(int count)
        {
            _places = new T?[count];
        }
        
        public int Insert(T lainer)
        {
            if (_places[Count - 1] != null)
                return Count;
            return Insert(lainer, 0);
        }
        public int Insert(T lainer, int position)
        {
            if (position < 0 || position >= Count)
            {
                return position;
            }
            if (_places[position] != null)
            {
                int ind = position;
                while (ind < Count && _places[ind] != null)
                    ind++;
                if (ind == Count)
                    return Count;
                for (int i = ind - 1; i >= position; i--)
                    _places[i + 1] = _places[i];
            }
            _places[position] = lainer;
            return position;
        }
        public bool Remove(int position)
        {
            if (position < 0 )
            {
                return false;
            }
            if(position >= Count)
            {
                return false;
            }
            _places[position] = null;
            return true;
        }
        public T? Get(int position)
        {
            if(position  < Count && position >= 0)
            { 
                return _places[position];
            }
            return null;
        }
    }
}