文章目录
体操比赛计算选手成绩的办法是去掉一个最高分和最低分后再计算平均分，而学校考查
一个班级的某科目的考试情况时，是计算全班同学的平均成绩。Gymnastics类和School类都
实现了ComputerAverage接口，但实现的方式不同。
package giao;
interface CompurerAverage {
public double average(double x[]);
}
class Gymnastics implements CompurerAverage {
public double average(double x[]) {
int count=x.length;
double aver=0,temp=0;
for(int i=0;i<count;i++) {
for(int j=i;j<count;j++) {
if(x[j]<x[i]) {
temp=x[j];
x[j]=x[i];
x[i]=temp;
}
}
}
for(int i=1;i<count-1;i++) {
aver=aver+x[i];
}
if(count>2)
aver=aver/(count-2);
else
aver=0;
return aver;
}
}
class School implements CompurerAverage {
public double average(double[] x) {
int count=x..length;
double aver=0;
for(int i=0;i<count;i++){
aver=aver+x[i];
}
aver=aver/count;
return aver;
}//重写public double average(double x[])方法,返回数组x[]的元素的算术平均
}
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[] ={89,56,78,90,100,77,56,45,36,79,98};
CompurerAverage computer;
computer=new Gymnastics();
double result=computer.average(a);//computer调用average(double x[])方法,将数组a传递给参数x
System.out.printf("%n");
System.out.printf("体操选手最后得分:%5.3f\n",result);
computer=new School();
result=computer.average(b);//computer调用average(double x[])方法，将数组b传递给参数x
System.out.pri ntf("班级考试平均分数:%-5.2f",result);
}
}
