JavaCSV文件及其操作
S.M.Tido,112,145,124
P.julio,178,145,133
Carey,92,100,123
Elain,87,92,92
Theodore,178,155,167
我已经阅读了上面的文本文件,并试图找到每行3个读数的平均值。但是我只能找到单个列的平均值,因为我的for循环逻辑不起作用。有人能告诉我如何找到每行的平均值吗
import java.util.Scanner;
import java.io.*;
public class PatientDetails{
public static void main(String[] args){
String fileName = "patient.txt";
File file = new File(fileName);
try{
Scanner inputStream = new Scanner(file);
int sum = 0;
int noOfReadings = 3;
while(inputStream.hasNext()){
String data = inputStream.next();
String[] values = data.split(",");
int readings1 = Integer.parseInt(values[1]);
int readings2 = Integer.parseInt(values[2]);
int readings3 = Integer.parseInt(values[3]);
sum = readings1 + readings2 + readings3;
}
inputStream.close();
System.out.println("Average = "+sum/noOfReadings);
}
catch(FileNotFoundException e){
e.printStackTrace();
}
}
}
注:
Note : I have not learnt data structures in Java so I cannot use lists
In my code.
# 1 楼答案
只需将
println()
移动到循环中,然后将sum
更改回0