????? ????? ?? ??? ?? ?? ??? ?? ?? ??? ??? ??? ?? ? ??? ????? ?? ? ??? ??? ????? ??? ??? ??? ?? ??? ???. ????? ? ?????. ??? ??? ?? ??? ???? ???? ???? ??? ?? ????? ??. ? ???? ? ????? ?? ? ????.Then the adverse indexing just wants you to include the size in the string for the adverse indices to know it.Introduction to Programming with Python and Java