比较SELECTIONSORT、INSERTIONSORT、BOTTOMUPSORT、MERGESORT、QUICKSORT五种排序算法的平均比较次数。-Comparing SELECTIONSORT, INSERTIONSORT, BOTTOMUPSORT, MERGESORT, QUICKSORT five kinds of sorting algorithms compare the average number of times.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001002s ]
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:0.084205s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001290s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001213s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001117s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003123s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000910s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003650s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015666s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001160s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 166440 [ RunTime:0.012394s ]
