输入数组，最大的与第一个元素交换，最小的与最后一个元素交换，输出数组。 程序分析：谭浩强的书中答案有问题。-input array, the largest and one of the elements in the first exchange, and the smallest elements of a final exchange, the output array. Program Analysis : Tan-book answer to a problem.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001556s ]
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:0.095581s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001231s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003661s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001048s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001390s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 67816 [ RunTime:0.001370s ]
