Question

急求如何在JAVA上编程这道题目

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Answer 1

package ceShi;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Test1 {

public static void main(String[] args) {
Scanner reader=new Scanner(System.in);
List<Integer> list=new ArrayList<>();

for (int i = 0; i < 5; i++) {
System.out.print("请输入第"+(i+1)+"门课成绩：");
int a= reader.nextInt();
list.add(a);
}

int sum=0;
for (int i = 0; i < list.size(); i++) {
sum=sum+list.get(i);
}

double avg=sum/5;
System.out.println("**考生的平均成绩是="+avg);

String a="成绩输入或者计算有误";
if (avg>=90 && avg<=100) {
a="优";
}
if (avg>=80 && avg<=89) {
a="良";
}
if (avg>=60 && avg<=70) {
a="中";
}
if (avg>=0 && avg<=60) {
a="差";
}

System.out.println("成绩等级："+a);
}
}