利用栈判断表达式中左右刮号是否配对出现 包括栈的一些基本操作 如进栈出栈-use expressions stack judgment about whether the scratch, including that Stack matching some basic operations such as stack up into stacks
水平一般,不能和航空公司相比,呵呵,大家参考,欢迎指正-It is in common level and there is a large distance between it and the right system in airline company.Haw-haw,it is only a referrence and welcome to comment.
des64动态加密使加密更可靠,比如同是123456,但加密出来的密文确不相同-Dynamic encryption to enable encryption des64 more reliable, for example, the same is 123456, but the encryption from the ciphertext is indeed not the same