编写一个算法,输出一个二叉树的所有叶子结点,并统计叶子结点个数-The preparation of an algorithm, the output of a binary tree of all the leaf nodes, and the statistics the number of leaf nodes
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001891s ]
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:0.094044s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002384s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001201s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000921s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003052s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000799s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003869s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014689s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001206s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 198669 [ RunTime:0.012848s ]
