该程序完成在两个字符串中寻找最长公共子串，如果这样的字符串有多个，则将它们全部找出来，它在最坏情况下的复杂度为O(m*n).-the procedure is completed in two for the longest string of public substrings, if such a number of strings, will they all find out in the worst of the complexity of O (n* m).
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001061s ]
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:0.062002s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001046s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001150s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001020s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003009s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000836s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003615s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014716s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001170s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 116998 [ RunTime:0.019807s ]
