此程序是用矩阵的方法解决一些常见问题，比如说学生成绩排序筛选等问题，希望对一些人有用。-This program is a matrix methods to solve some common problems, such as student achievement to sort filter and so on, want to be useful for some people.

读入xls文档，完成对成绩的排序，然后重新写回xls。特点就是 ，可以输入不同的排序标准，完成不同的排序。-Read xls document, complete results of the sort, and then re-write back to xls. Feature is that you can enter a different sort criteria, the completion of a different sort.

学生成绩展示，排序学生的成绩，添加和删除用户，(Student performance display, sorting, adding and deleting users)