G家 newgrad店面挂经


Given an input file that contains multipletext lines, generate an output file that contains the same number of text linesbut in a reversed order.


给了一个函数read_from_file_at_pos(pos)可以调用,it reads from a file at pos in byte, and returns N bytes of the datacontained in the file

还是generate an output file that contains thesame number of text lines but in a reversed order.