用JAVA所写的用于矩阵运算的类，包括矩阵加、减、乘法、矩阵求逆，转置等-written with Java for matrix calculation of categories, including matrix, plus or minus, multiplication, matrix inversion, and so on to home
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000975s ]
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:0.087344s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001162s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001135s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001043s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003129s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000982s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003771s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014767s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001232s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 46954 [ RunTime:0.013952s ]
