Java基础回顾_二维数组计算班级学生成绩_简单

package 基础;

import java.util.Scanner;
/**
 * 简单二维数组输入班级数，班级人数，输完后显示该最高分、最低分、平均分
 */
public class 输入班级学生成绩 {

	public static void main(String[] args) {
		float max = 0;
		float min = 100;
		float sum = 0;
		System.out.println("请输入班级数");
		Scanner input = new Scanner(System.in);
		int x = input.nextInt();
		for (int i = 0; i < x; i++) {
			System.out.println("现在执行第"+(i+1)+"个班级的成绩统计:");
			System.out.println("请输入该班级的学生人数:");
			int y = input.nextInt();
			for (int j = 0; j < y; j++) {
				System.out.println("第"+(j+1)+"位学生成绩");
				float score = input.nextFloat();
				if(score >= max){
					max = score;
				}
				if (score <= min) {
					min = score;
				}
				sum += score;
			}
			System.out.println("该班中最高分为:"+max+"  最低分为:"+min+"   平均分为:"+sum/y);
			sum = 0;//重新设置下sum的值,让下一班级的总分默认初始为0
		}
	}
}

转载于:https://my.oschina.net/qiqitrue/blog/1579134