用链表实现的大数阶乘，可以计算n万的阶乘，不过3万以上，时间就很长了。-List realize with the factorial of large numbers, can calculate the factorial of n million, but more than 30,000, time is very long.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001303s ]
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:0.092451s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001176s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001935s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001218s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004059s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001074s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003231s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014470s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001342s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 196047 [ RunTime:0.001295s ]
