双端堆是支持双端优先队列的插入、删除最小元素和最大元素等操作的堆。
双端堆可以在对数时间内完成上述所有的操作。
-Double-ended heap to support double-ended priority queue insert, delete the smallest element and the largest such operation of the reactor element. Double-ended heap in logarithmic time to complete all of the above operation.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001180s ]
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:0.086753s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000961s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001251s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001325s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003385s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000836s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004450s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016420s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001320s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 173314 [ RunTime:0.020725s ]
