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:0.011700s ]
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:0.128457s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000967s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001697s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005780s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001292s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016893s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001196s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 4245 [ RunTime:0.376211s ]
