here is code:
这是代码:
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class ReadContents {
public static void main(String[] args) throws IOException {
File file = new File("file1.txt");
List<float[]> list = new ArrayList<float[]>();
Scanner scanner = new Scanner(file).useDelimiter("\n");
while (scanner.hasNext()) {
String[] values = scanner.next().trim().split(" ");
float[] floats = new float[values.length];
for (int i = 0; i < values.length; i++) {
floats[i] = Float.parseFloat(values[i]);
}
list.add(floats);
}
float[][] values = new float[list.size()][];
for (int i = 0; i < list.size(); i++) {
values[i] = list.get(i);
for (int j = 0; j < values[i].length; j++) {
System.out.print(values[i][j] + " ");
}
System.out.println();
}
int row =values.length;
int col=values[0].length;
System.out.println(row);
System.out.println(col);
//******************************************************************************************************************
System.out.println();
double sum;
double avg=0;
for (int p = 0; p < col; p++){
sum=0;
for (int k = 0; k < row; k++){
sum = sum + values[k][p];
//avg=((double)sum / row);
}
avg=((double)sum / row);
System.out.print("average"+p+"=");
System.out.printf("%5.2f\n", avg);
}
it gives output as file content in 2d matrix and also print averages of each column of "values[][]" matrix on console screen.now i want to print the matrix containing all averages calculated previously into single 2d n*m array. pls guide me.
它在2d矩阵中给出输出作为文件内容,并且还在控制台屏幕上打印“values [] []”矩阵的每列的平均值。现在我想打印包含先前计算的所有平均值的矩阵到单个2d n * m数组中。请指导我。
1 个解决方案
#1
0
In the first place you shouldn't be dumping the result to the console.
首先,您不应该将结果转储到控制台。
Instead, store the result into a variable.
而是将结果存储到变量中。
#1
0
In the first place you shouldn't be dumping the result to the console.
首先,您不应该将结果转储到控制台。
Instead, store the result into a variable.
而是将结果存储到变量中。