SQL题:给你如下表:让你查询出没有选小易老师课程的所有学生CREATE TABLE `S` ( `SNO` varchar(100) COLLATE utf8mb4_bin DEFAULT '' COMMENT '学号', `SNAME` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '姓名') ENGINE=InnoDB AUTO_INCREMENT=146 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC COMMENT='学生关系';CREATE TABLE `C` ( `CNO` varchar(100) COLLATE utf8mb4_bin DEFAULT '' COMMENT '课程号', `CNAME` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '课程名', `CTEACHER` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '老师') ENGINE=InnoDB AUTO_INCREMENT=146 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC COMMENT='课程关系';CREATE TABLE `SC` ( `SNO` varchar(100) COLLATE utf8mb4_bin DEFAULT '' COMMENT '学号', `CNO` varchar(100) COLLATE utf8mb4_bin DEFAULT '' COMMENT '课程号', `SCORE` bigint(100) NOT NULL DEFAULT '0' COMMENT '成绩') ENGINE=InnoDB AUTO_INCREMENT=146 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC COMMENT='选课关系';INSERT INTO `SC` (`SNO`, `CNO`, `SCORE`) VALUES ( '2', '11', 120);INSERT INTO `S` (`SNO`, `SNAME`) VALUES ('2', '小易');INSERT INTO `C` (`CNO`, `CNAME`, `CTEACHER`) VALUES ('11', '小易', '物理老师');Java题:给你一个字符串让你将他反转并转成大写,但“ali”这个单词不做反转。思路:先将所有的ali替换成特殊字符。然后正常反转,反转后将ali替换回来