用贪婪算法中的哈夫曼编码为文件进行压缩，得到一个比较好的压缩程序．-greedy algorithm with the Huffman encoding of the document for compression, to be a relatively good compression process.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001399s ]
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:0.088456s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001325s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002045s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001278s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003634s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001060s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003205s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014896s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001380s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 67553 [ RunTime:0.001246s ]
