用贪婪法的策论，用非递归实现背包问题的求解，并求出放如背包中的物品．-greedy law with political discourse, the use of non- recursive Knapsack Problem Solving and sought release if the items backpack.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001977s ]
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:0.095981s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001292s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001273s ]
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:0.003223s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000888s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003613s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014479s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001111s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 67554 [ RunTime:0.015266s ]
