程序通过构建一个haffman树，用哈夫曼树算法对文本文件进行0-1化编码，并模拟文件
压缩与解压-Procedure to build a tree haffman using Huffman tree algorithm to 0-1 on the text file of code, and simulate file compression and decompression
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001120s ]
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:0.087462s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.011346s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002059s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001532s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005794s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001530s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007066s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021611s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001690s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 229792 [ RunTime:0.022105s ]
