CompurerAverage.java
public interface CompurerAverage {
public double average(double x[]);
}
SongGame.java
public class SongGame implements CompurerAverage{
public double average(double x[]) {
int count=x.length;
double aver=0,temp=0;
for(int i=0;i
for(int j=i;j
if(x[j]
temp=x[j];
x[j]=x[i];
x[i]=temp;
}
}
}
for(int i=1;i
aver=aver+x[i];
}
if(count>2)
aver=aver/(count-2);
else
aver=0;
return aver;
}
}
School.java
public class School implements CompurerAverage {
public double average(double x[]) {
double sum=0;
for(int i=0;i
sum=sum+x[i];
}
return (sum/x.length);
}
}
Estimator.java
public class Estimator {
public static void main(String[] args) {
double a[]= {9.89,9.88,9.99,9.12,9.69,9.76,8.97};
double b[]= {56,55.5,65,50,51.5,53.6,70,49,66,62,46};
CompurerAverage computer;
computer=new SongGame();
double result=computer.average(a);
System.out.printf("%n");
System.out.printf("歌手最后得分：%5.3fn", result);
computer=new School();
result=computer.average(b);
System.out.printf("学生平均体重：%-5.2fkg", result);
}
}
