先采用选择法，将学生成绩从高到低进行排序，再输入一个学生的成绩，将此成绩按照排序规律插入已排好序的学生成绩数组，最后将排好序的成绩单进行反序存放。-First selection method, the student scores high to low sort, and then enter a student s grades, this insert the sorted array of student achievement results sorted according to