[英]how can i calculate the average age in a java loop?
I was asked to write a program that ask a health worker to enter the info of the patients he helps each day.我被要求编写一个程序,要求卫生工作者输入他每天帮助的患者的信息。 But I couldn't calculate the average of the entered age and show the info of which patient is the oldest and who is the youngest.但是我无法计算输入年龄的平均值并显示哪个患者年龄最大,谁年龄最小的信息。 Can anyone help me with this please, I've done the first steps correctly but I don't know how to do the rest.任何人都可以帮我解决这个问题,我已经正确地完成了第一步,但我不知道如何做剩下的。
public static void main(String[] args) {
int i, i2, i4, a;
String s1, s2, s3, s4;
s1 = JOptionPane.showInputDialog("Enter The Number Of Patients");
i = Integer.parseInt(s1);
a = 0;
while (a < i) {
s2 = JOptionPane.showInputDialog("Enter patient's ID");
i2 = Integer.parseInt(s2);
s3 = JOptionPane.showInputDialog("Enter patient's Name");
s4 = JOptionPane.showInputDialog("Enter patient's Age");
i4 = Integer.parseInt(s4);
JOptionPane.showMessageDialog(null, " ID : " + i2 + "\n Name : " + s3 + "\n Age : " + i4);
a++;
}
}
The comments are good.评论很好。 That said, the simplest way would be as follows:也就是说,最简单的方法如下:
public static void main(String[] args) {
int i, i2, i4, a;
String s1, s2, s3, s4;
s1 = JOptionPane.showInputDialog("Enter The Number Of Patients");
i = Integer.parseInt(s1);
a = 0;
long totalAges = 0;
while (a < i) {
s2 = JOptionPane.showInputDialog("Enter patient's ID");
i2 = Integer.parseInt(s2);
s3 = JOptionPane.showInputDialog("Enter patient's Name");
s4 = JOptionPane.showInputDialog("Enter patient's Age");
i4 = Integer.parseInt(s4);
JOptionPane.showMessageDialog(null, " ID : " + i2 + "\n Name : " + s3 + "\n Age : " + i4);
totalAges += i4;
a++;
}
double avgAge = ((double) totalAges) / i;
JOptionPane.showMessageDialog(null, " Average Age: " + avgAge);
}
You can use List
interface for storing all the patients age.您可以使用List
接口存储所有患者的年龄。
Code is like:代码是这样的:
List<Integer> myPatientAge = new List<Integer>();
myPatientAge.add(i4);
Iterator<Integer> myListIterator = myPatientAge.iterator();
while (myListIterator.hasNext()) {
Integer age = myListIterator.next();
//code for checking the age
}
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