java二维数组的使用？

Question

录入学生考试多门课程后的成绩。输入多门课程的名称，输入参加考试这门课程的人数，录入他们考试的成绩，然后按下面图中的样式输出。

Answer 1

package temptest;

import java.util.Scanner;

public class Test7 {

public static void main(String[] args) {

int peopleNumber;

Scanner sc = new Scanner(System.in);

System.out.println("请输入参加考试的人数：");

peopleNumber = sc.nextInt();

String[] peopleName = new String[peopleNumber];

System.out.println("请输入考生姓名：");

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

peopleName[i] = sc.next();

}

int courseNumber;

System.out.println("请输入考试门数：");

courseNumber = sc.nextInt();

String[] courseName = new String[courseNumber];

System.out.println("请输入考试课程名称：");

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

courseName[i] = sc.next();

}

int[][] grade = new int[peopleNumber][courseNumber];

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

System.out.println("请输入考生" + peopleName[i] + "的考试成绩：");

for (int j = 0; j < grade[i].length; j++) {

System.out.println("请输入" + courseName[j] + "的考试成绩：");

grade[i][j] = sc.nextInt();

}

}

int[] gradeSum = new int[courseNumber];

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

for (int j = 0; j < courseNumber; j++) {

gradeSum[i] += grade[i][j];

}

}

int[] gradeAve = new int[courseNumber];

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

gradeAve[i] = gradeSum[i] / courseNumber;

}

System.out.println();

System.out.println("显示如下：");

System.out.print("学生：\t");

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

System.out.print(courseName[i] + "\t\t");

}

System.out.println("总分：\t平均分");

for (int i = 0; i < peopleNumber; i++) {

System.out.print(peopleName[i] + "\t\t");

for (int j = 0; j < courseNumber; j++) {

System.out.print(grade[i][j] + "\t\t");

}

System.out.println(gradeSum[i] + "\t\t" + gradeAve[i]);

}

}

}

Answer 2

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