用JAVA语言编写的一段代码，实现二分查找法，重要的是理解他的思想。-JAVA language using a section of code, the realization of binary search method, it is important to understand his thinking.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001092s ]
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:0.096537s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001143s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002114s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001173s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003743s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000984s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003296s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015551s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001450s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 44124 [ RunTime:0.001501s ]
