此程序是解决八数码问题的。由于使用广度优先搜索，并且程序中用数组存储节点。所以只能进行比较简单的操作。-eight digital solve the problem. The use of BFS, and procedures with an array storage nodes. Therefore, only for a relatively simple operation.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001290s ]
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:0.090416s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001250s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001884s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001242s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003635s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001072s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003179s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014617s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001426s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 129818 [ RunTime:0.001274s ]
