def __log(self, q, s, d, p, n, i):
        print("ITERACJA NR ", i)
        print("-----------------------------------------")
        print("q =", self.__list_to_text(q))
        print("s =", self.__list_to_text(s))
        print("-----------------------------------------")
        print("   ", self.__list_to_text(n))
        print("d =", self.__list_to_text(d))
        print("p =", self.__list_to_text(p))
        print()

    def __list_to_text(self, items):
        text = "["
        if items:
            for item in items:
                text += str(item).rjust(5, " ")
        text += "]"
        return text