非常经典的数据结构课程中，以C++解决逆波兰表达式的问题。给出了详细的算法和输出结果-A very classic data structures course, in order to solve the C++ Reverse Polish Notation issues. Gives a detailed algorithm and output
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001307s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.087815s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001129s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002326s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001211s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003727s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000983s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003519s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015250s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002460s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 61697 [ RunTime:0.001186s ]
