一个算法，实现如下功能：输入一个整数，输出该整数的二进制表示形式中1的个数。-An algorithm to achieve the following functions: enter an integer, the output of the binary integer that forms one of the number.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001691s ]
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:0.115083s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001233s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001873s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001208s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003622s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003195s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016115s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001468s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 284237 [ RunTime:0.001402s ]
