Huffman编码用于图象压缩.即可以了解Huffman编码原理,也可以了解图象压缩技术.可运行.-Huffman coding for image compression. That is, can understand the principle of Huffman coding, you can understand the image compression technology. Can run.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001317s ]
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:0.091742s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001268s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001879s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001347s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003653s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001047s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003185s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014804s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001433s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 221594 [ RunTime:0.005386s ]
