一个小困惑，但困扰了一下午。拜托大家解惑

做多做少不如做好 2019-10-10 06:57:54

import java.util.Scanner;



public class StudentResultEnquiry {

	final int STUDENT_NUM = 6;

	final int COURSE_NUM = 5;



	public static void main(String[] args) {

		// TODO Auto-generated method stub

		String[] students = { "zhang", "wang", "li", "zhao", "liu", "song" };

		String[] courses = { "C", "Java", "mySQL", "Linux", "HTML" };

		int[][] scores = new int[][] { { 26, 69, 46, 25, 5 }, { 27, 10, 24, 66, 58 }, { 44, 58, 0, 82, 75 },

				{ 6, 68, 92, 9, 84 }, { 75, 1, 51, 41, 74 }, { 23, 38, 65, 1, 55 } };

		show(students, courses, scores);

		run(students, courses, scores);

	}



	public static void show(String[] students, String[] courses, int[][] scores) {

		System.out.print("\t");

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

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

		}

		System.out.println();

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

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

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

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

			}

			System.out.println();

		}

	}



	public static void run(String[] students, String[] courses, int[][] scores) {

		System.out.print("请输入命令：");

		Scanner scn = new Scanner(System.in);

		String command = scn.next();

		if (command.equalsIgnoreCase("avg")) {

			String parameter = scn.next();

			avg(students, courses, scores, parameter);

		}

	}



	public static void avg(String[] students, String[] courses, int[][] scores, String condition) {

		int i;

		int total = 0;

		for (i = 0; i < courses.length && condition!=courses[i]; i++)

			System.out.println(i);

//		if (i < courses.length) {

//			for (int j = 0; j < students.length; j++) {

//				total += scores[j][i];

//			}

//			System.out.printf("%s的平均分是：%.1f\n", condition, (float) (total / students.length));

//		}



//		for (int i = 0; i < students.length; i++)

//			if (condition.equals(students[i])) {

//				for (int j = 0; j < courses.length; j++) {

//					total += scores[i][j];

//				}

//				System.out.printf("%s的平均分是：%.1f\n", condition, (float) (total / courses.length));

//			}

	}



}