java储存成绩代码,java学生成绩代码

java编程 保存十个同学的三门功课成绩使用二维数组

import java.util.Scanner;

public class Demo {

public static void main(String[] args) {

int[][] a = new int[10][3];

String str[] = { "A", "B", "C" };

Scanner scan = new Scanner(System.in);

for (int i = 0; i 2; i++) {

for (int j = 0; j 3; j++) {

System.out.print("输入第" + (1 + i) + "位同学的" + str[j] + "的分数：");

a[i][j] = scan.nextInt();

}

}

for (int i = 0; i 2; i++) {

for (int j = 0; j 3; j++) {

System.out.println("第" + (1 + i) + "位同学的" + str[j] + "的分数为："+a[i][j]);

}

}

}

}

相关问答

Q1: 在java中,利用list集合存储成绩,输入成绩统计统计平均分,最高分,最低分和不及？

import java.util.ArrayList;

import java.util.Collections;

import java.util.Scanner;

public class GradeList {

public static void main(String[] args) {

ArrayListInteger list = new ArrayList();

Scanner in = new Scanner(System.in);

int grade;

System.out.print("请输入成绩,以空格隔开,键入-1结束：");

while ((grade = in.nextInt())!=-1){

if(grade=0grade=100)

list.add(grade);

}

System.out.println("实际统计的人数为："+list.size()+"\n实际统计的成绩为："+list);

System.out.println("平均分："+getAvg(list));

System.out.println("最高分："+getMax(list));

System.out.println("最低分："+getMin(list));

System.out.println("不及格："+getBad(list));

}

public static double getAvg(ArrayListInteger list){

int sum = 0;

for (int i = 0; i list.size(); i++) {

sum += list.get(i);

}

return (double)sum/list.size();

}

public static int getMax(ArrayListInteger list){

Collections.sort(list);

return list.get(list.size()-1);

}

public static int getMin(ArrayListInteger list){

Collections.sort(list);

return list.get(0);

}

public static ArrayList getBad(ArrayListInteger list){

Collections.sort(list);

ArrayListInteger badGradeList = new ArrayListInteger();

for (int index=0; index list.size(); index++) {

int grade = list.get(index);

if (grade60)

badGradeList.add(grade);

}

return badGradeList;

}

}

main方法

求平均、最高、最低、不及格方法

Q2: 请使用java数组存储5个同学的JAVA成绩，并计算出所有同学的总分和平均分

import java.util.Scanner;

public class Test

{

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

int[] arr=new int[5];

float ave=0;

System.out.print("请输入5个同学的java成绩：");

for(int i=0;i5;i++)

{

arr[i]=sc.nextInt();

ave+=arr[i];

}

System.out.printf("总分 = %d; 平均分 = %.1f",(int)ave,ave/5);

System.out.println();

sc.close();

}

}

Q3: java定义一个实数数组用来存放学生成绩

主要是下标做了,记住数组是用0开始,现在调通了

import java.util.Scanner;

public class Admin {

public static void main(String... args) {

Scanner reader = new Scanner(System.in);

System.out.println("输入用户个数：");

int score = reader.nextInt();

double score1[] = new double[score];

System.out.println("输入用户成绩：");

for (int i = 0; i score1.length; i++) {

double s = reader.nextDouble();

score1[i] = s;

}

System.out.println("输入查找学生");

int n = reader.nextInt();

if (n == score) {

System.out.println("第" + score + "学生成绩是：" + score1[score - 1]);

}

}

}