凸包
凸包问题的实现 有无数点，求能包含这些点的图形的最小面积-Convex hull Convex hull problem of realization there are numerous points, seek to include these points, the graphics, the minimum size
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002299s ]
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:0.086493s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002614s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002088s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002576s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004030s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002440s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003688s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016709s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.004382s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 4245 [ RunTime:0.001459s ]
