java 输出学生成绩和成绩等级

• 从键盘读入学生成绩，找出最高分，
• 并输出学生成绩等级。
• 成绩>=最高分-10 等级为’A’
• 成绩>=最高分-20 等级为’B’
• 成绩>=最高分-30 等级为’C’
• 其余 等级为’D’
• 提示：先读入学生人数，根据人数创建int数组，
• 存放学生成绩

结果：
请输入学生人数：
5
请输入5个成绩：
56
74
89
41
89
student0 score is 56 grade is D
student1 score is 74 grade is B
student2 score is 89 grade is A
student3 score is 41 grade is D
student4 score is 89 grade is A

Process finished with exit code 0

package lesson.l7_array;
import java.util.Scanner;

public class ArrayTest1 {
public static void main(String[] args) {
	Scanner scan=new Scanner(System.in);
	System.out.println("请输入学生人数：");
	int n=scan.nextInt();
	int[]students=new int[n];
	System.out.println("请输入5个成绩：");
	int max=0;
	char []scores=new char[n];
//	存放学生成绩并计算最大值
	for (int i = 0; i < n; i++) {
		students[i]= scan.nextInt();
		max= Math.max(max, students[i]);
	}
//	判断学生成绩等级并输出
	for (int i = 0; i < n; i++) {
		if (students[i]>=max-10){
			scores[i]='A';
		}else if (students[i]>=max-20){
			scores[i]='B';
		}else if (students[i]>=max-30){
			scores[i]='C';
		}else {
			scores[i]='D';
		}
		System.out.println("student"+i+" score is "+students[i]+" grade is "+scores[i]);
	}
	scan.close();
 }
 
}