import java.util.ArrayList;
import java.util.List;
public class TestNumber {
public static void main(String[] args) {
GetNumber gn = new GetNumber();
//获得list
List<Double> list = gn.getNumber();
//计算平均数
double sum = 0;
for(int i=0; i<list.size(); i++) {
sum += list.get(i);
}
System.out.println("十个随机数为:" + list);
System.out.println("平均数为:" + sum / list.size());
}
}
class GetNumber {
private List<Double> list;
public List<Double> getNumber() {
list = new ArrayList<Double>();
for(int i=0; i<10; i++) {
list.add(Math.random());
}
return list;
}
}
package two.three;
import java.util.ArrayList;
import java.util.List;
public class GetNumber {
public List getList() {
List list = new ArrayList();
for (int i = 0; i < 10; i++) {
double d = Math.random();
list.add(d);
}
return list;
}
}
package two.three;
import java.util.List;
public class TestNumber {
public static void main(String[] args) {
double sum = 0,avg;
GetNumber g = new GetNumber();
List list = g.getList();
for(int i=0;i<list.size();i++){
sum = sum+=(Double)list.get(i);
}
System.out.println(sum/list.size());
}
}
