先设定随机数发生公式的种子值，根据这个产生一个随机的数组，然后通过插入排序进行排序，并计算运行时间-First occurrence of the formula set random number seed value, the basis of this result in a random array, and then sort through the insertion sort, and calculate the running time
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001232s ]
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:0.082421s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000939s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001143s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000951s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003223s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000883s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003733s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014997s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001307s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 306735 [ RunTime:0.016050s ]
