通过面向对象的思想介绍KMeans算法了实现，另外附加了用C语言写的KMeans算法的实现。-Through object-oriented thinking KMeans Algorithm introduced to achieve, while the additional use of C language KMeans Algorithm.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001439s ]
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:0.092830s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001230s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001895s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001205s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003628s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001054s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003187s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015040s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001409s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 317842 [ RunTime:0.001221s ]
