学习java第5天

JAVA–运用数组及循环组建统计成绩信息

package com.chj.contact;

import java.util.Scanner;

public class ReadStudentGrade {
	public static void main(String[] args) {
		Scanner scan=new Scanner(System.in);
		System.out.println("请输入学生人数：");
		int readScan=scan.nextInt();
		int[] studentG=new int[readScan];
		System.out.println("请依次输入学生成绩：");
		for(int i=0;i<readScan;i++){
			Scanner scan1=new Scanner(System.in);
			studentG[i]=scan1.nextInt();
		}
		int j=0;
		int temp=studentG[0];
		int sums=0;
		while(j<readScan){
			if(studentG[0]<=studentG[j]){
				studentG[0]=studentG[j];
			}
			j++;
		}
		System.out.println("最高分是"+studentG[0]);
		int maxGrade=studentG[0];
		studentG[0]=temp;
		for(int i=0;i<readScan;i++){
			if(studentG[i]>maxGrade-10){
				System.out.println("Stdent\t"+i+"\tscore is\t"+studentG[i]+" Grade is A");
			}else if(studentG[i]>maxGrade-20){
				System.out.println("Stdent\t"+i+"\tscore is\t"+studentG[i]+" Grade is B");
			}else if(studentG[i]>maxGrade-30){
				System.out.println("Stdent\t"+i+"\tscore is\t"+studentG[i]+" Grade is C");
			}else{
				System.out.println("Stdent\t"+i+"\tscore is\t"+studentG[i]+" Grade is D");
			}
			sums +=studentG[i];
		}
		System.out.println("总分为"+sums);
		System.out.println("平均分为"+sums/readScan);
	}
}