页面置换算法 用于页面置换方面的算法，对于计算机算法的研究对初学者很有帮助-The arithmetic of page replacement,arithmetic used to the replacement,it is useful for the beginer of computer arithmetic.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001019s ]
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:0.074582s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001211s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001187s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001116s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003147s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000850s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003969s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015451s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001190s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 301291 [ RunTime:0.040483s ]
