二叉数先序循环的非递归实现，一般先序循环都是由递归实现的，按照完全二叉树格式输入字符型结点值-binary sequence a few first cycle of non- recursive, the general first order recursive cycle are achieved, In accordance with the format completely binary tree node input character values
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001141s ]
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:0.166651s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001051s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003220s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000927s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001967s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 182046 [ RunTime:0.019680s ]
