一些简单的小程序，如哈弗曼编辑器，最小生成树，哈希表的设计与实现-Some simple small programs, such as Havermann editor, minimum spanning tree, hash table design and implementation, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001298s ]
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:0.090207s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001245s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001879s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001264s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003627s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001064s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003176s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016828s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001386s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 187321 [ RunTime:0.001165s ]
