数据结构实验，实现多项式乘法，自由输入两个多项式，计算结果并排序。-Experimental data structure, the realization of polynomial multiplication, free importation of two polynomials, the calculation results and sort.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002278s ]
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:0.112730s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001493s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001842s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001392s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006386s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001600s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004737s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016111s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001578s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 210716 [ RunTime:0.043636s ]
