一维数组的练习

public class Array1 {
    public static void main(String[] args){

        Pritimive d=new Pritimive();
        for (int i=0;i<d.t.length;i++){
            System.out.println(d.t[i]);
        }
        d.t[0]=true;
        d.t[1]=true;
        d.t[2]=true;
        for (int j=0;j<d.t.length;j++){
            System.out.println(d.t[j]);
        }
    }
}
class Pritimive{
    boolean[] t=new boolean[3];
}

import java.util.Scanner;
public class w {
    public static void main(String[] args){
        //从键盘输入学生的个数
        Scanner s=new Scanner(System.in);
        System.out.println("请输入学生人数：");
        int count=s.nextInt();//写入学生个数
        System.out.println("请输入"+count+"个成绩：");
        //定义一个数组存储分数
        int[] scores=new int[count];
        //定义最高分
        int maxscore=0;
        //找到最高分
        for (int i=0;i< scores.length;i++){
            int score=s.nextInt();//写入学生成绩
            scores[i]=score;
            if (scores[i]>maxscore){
                maxscore=scores[i];

            }
        }
        //输出最高分
        System.out.println("最高分是：");
        System.out.println(maxscore);
        //输出学生成绩
        for (int i=0;i<scores.length;i++){
            char grade;
            if (scores[i]>=maxscore-10){
                grade='A';
            }else if (scores[i]>=maxscore-20){
                grade='B';
            }else if (scores[i]>=maxscore-30){
                grade='C';
            }else{
                grade='D';
            }
            System.out.println("student "+i+" score is "+scores[i]+" grade is "+grade);
        }
    }
}