求助大佬！！为什么数组的数据输出总被覆盖

喜欢马鹿马 2019-03-25 06:57:17

如题，我有把创建对象那一步加到循环中（见代码63.64行），可还是输出最后一次存进去的

package homework;



import java.util.Scanner;



public class Student {

	public static Student[] studentArray = new Student[3];

	public static float[] mul = new float[3];

	public static String name;

	public static int number;

	public static String sex;

	public static int Cscore;

	public static int Mscore;

	public static int Escore;

	public static int Ccredit;// 学分

	public static int Mcredit;

	public static int Ecredit;

	public static int index = 0;

	public static float code;

	public static String flag;



	public Student(String name, int number, String sex, int Cscore, int Mscore, int Escore, int Ccredit, int Mcredit,

			int Ecredit) {

		this.name = name;

		this.number = number;

		this.sex = sex;



		this.Cscore = Cscore;

		this.Ccredit = Ccredit;

		this.Mscore = Mscore;

		this.Mcredit = Mcredit;

		this.Escore = Escore;

		this.Ecredit = Ecredit;



	}



	public static void main(String[] args) {

		Scanner input = new Scanner(System.in);



		for (int i = 0; i < 3; i++) {

			// Scanner input = new Scanner(System.in);

			System.out.println("请输入学生姓名");

			name = input.next();

			System.out.println("请输入学号");

			number = input.nextInt();

			System.out.println("请输入性别");

			sex = input.next();



			System.out.println("请输入语文成绩");

			Cscore = input.nextInt();

			System.out.println("请输入语文学分");

			Ccredit = input.nextInt();



			System.out.println("请输入数学成绩");

			Mscore = input.nextInt();

			System.out.println("请输入数学学分");

			Mcredit = input.nextInt();



			System.out.println("请输入英语成绩");

			Escore = input.nextInt();

			System.out.println("请输入英语学分");

			Ecredit = input.nextInt();



			Student st = new Student(name, number, sex, Cscore, Mscore, Escore, Ccredit, Mcredit, Ecredit);//创建对象

			studentArray[index++] = st;//将对象存入数组



		}



		for (int k = 0; k < 3; k++) {

			System.out.println("姓名：" + studentArray[k].name + "\t学号：" + studentArray[k].number + "\t性别："

					+ studentArray[k].sex + "\t语文成绩：" + studentArray[k].Cscore + "\t语文学分" + studentArray[k].Ccredit

					+ "\t数学成绩：" + studentArray[k].Mscore + "\t数学学分" + studentArray[k].Mcredit + "\t英语成绩："

					+ studentArray[k].Escore + "\t英语学分" + studentArray[k].Ecredit);

		}



		System.out.println("成绩排名如下：");



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



			mul[j] = (float) (studentArray[j].Cscore * studentArray[j].Ccredit

					+ studentArray[j].Mscore * studentArray[j].Mcredit

					+ studentArray[j].Escore * studentArray[j].Ecredit)

					/ (studentArray[j].Ccredit + studentArray[j].Mcredit + studentArray[j].Ecredit);



			int minIndex = j;

			for (int p = j; p < mul.length; p++) {

				if (mul[p] > mul[minIndex])// 找到最小的数

					minIndex = p;// 将最小数的索引保存

			}

			flag = studentArray[minIndex].name;

			studentArray[minIndex].name = studentArray[j].name;

			studentArray[j].name = flag;



			code = mul[minIndex];

			mul[minIndex] = mul[j];

			mul[j] = code;



			System.out.println("姓名：" + studentArray[j].name + ",加权平均分：" + mul[j]);



		}

	}

}