一个解线性超定方程组的算法，是用C语言写的，简单易懂，而且速度还挺快的。-a solution-linear equations of the algorithm is written in C language, easily understood, but the speed It"s fast.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001486s ]
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:0.105927s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001086s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001201s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001374s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003176s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000946s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004126s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018026s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001611s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 155862 [ RunTime:5.570631s ]
