Java类与对象流水线打分数笔记

在cmd编译
javac *.java
再执行
java SingGame

SingGame.java

public class SingGame {
  public static void main (String args[]) {
    Line line=new Line();
	line.givePersonScore();
	}
}	

InputScore.java

import java.util.Scanner;
public class InputScore {
  DelScore del ;
  InputScore(DelScore del) {
    this.del = del;
	}
  public void inputScore() {
    System.out.print("请输入评委数n");
    Scanner reader=new Scanner(System.in);
    int count = reader.nextInt();
   System.out.print("请输入各个评委的分数n");
    double []a= new double[count];
    for(int i=0;i 
DelScore.java
 
public class DelScore {
  ComputerAver computer ;
  DelScore(ComputerAver computer) {
    this.computer = computer;
	}
	public void doDelete(double [] a) {
	  java.util.Arrays.sort(a); //数组a从大到小排序 
	  System.out.print("去掉一个最高分:"+a[a.length-1]+"，");
	  System.out.print("去掉一个最低分:"+a[0]+"。");
	  double b[] =new double[a.length-2];
	  for(int i=1;i
 
ComputerAver.java
 
public class ComputerAver {
  public void giveAver(double [] b) {
    double sum=0;
	for(int i = 0;i 
ComputerAver.java显示小数点两位可改为
 
import java.text.*;
public class ComputerAver {
  public void giveAver(double [] b) {
    double sum=0;
	for(int i = 0;i 
Line.java
 
public class Line {
  InputScore one;
  DelScore two;
  ComputerAver three;
  Line() {
    three=new ComputerAver();
	two=new DelScore(three);
	one=new InputScore(two);
	}
	public void givePersonScore(){
	  one.inputScore();
	}
} 
 
运行结果
 
请输入评委数
5
请输入各个评委的分数
56
98
68
99
88
去掉一个最高分:99.0，去掉一个最低分:56.0。选手最后得分84.66666666666667