设计一个学生信息管理系统，学生对象至少要包含：学号、姓名、性别、成绩1、成绩2、总成绩等信息。要求实现以下功能：

1．总成绩要求自动计算；

2．查询：分别给定学生学号、姓名、性别，能够查找到学生的基本信息（要求至少用两种查找算法实现）；

3．　　排序：分别按学生的学号、成绩1、成绩2、总成绩进行排序（要求至少用两种排序算法实现）。

-design of a student information management system, targeting students at least include : school, name, sex, a performance, accomplishment 2 total score, and other information. Call for the following functions : 1. Total score requirement automatically calculated; 2. Inquiries : students were given school, name, sex, Students can find basic information (requiring at least two search algorithm); 3. Ranking : The students of the school, an achievement, accomplishment 2. Sort total score (requiring at least two ranking algorithm).