Question

例：
假设我的文件是：

我想将其显示为：

1 2 3 4  
5 6 7 8

我能够从文件中读取并能够显示文件内容我使用这种方法从文件和显示中读取，但我无法找到一种方法将它带入8 * 8阵列形式。

public class FileRead  
{
public static void printRow(int[] row) 
{
    for (int k : row) 
    {
        System.out.print(k);
        System.out.print("\t");
    }
    System.out.println();
  }



  public static void main(String[] args)
{
File file = new File("filepath");

int i,j;
int row = 8;
int column = 8;
int [][] myArray = new int [row][column];
try 
{

   Scanner sc = new Scanner(file);
    while (sc.hasNextLine()) 
    {
    int k = sc.nextInt();
        System.out.print(k);
        System.out.print("\t");
        }
    System.out.println();


   /*for(int[] row : myArray) 
    {
        printRow(row);
    }*/

    sc.close();
} 
catch (FileNotFoundException e) {
    e.printStackTrace();
}
}
}

我正在以这种形式获得输出：
1 2 3 4 5 6 7 8 ...

public static void main(String[] args) throws IOException 
{
 BufferedReader file = new BufferedReader(new FileReader("filepath"));
 Scanner sc = new Scanner(file);
  int k = sc.nextInt();
  if(iRow < myArray.length && iColumn < myArray[iRow].length) 
  {
    myArray[iRow][iColumn] = k;
iColumn++;
if(iColumn == myArray[iRow].length)  
{
 iColumn = 0;
 iRow++;
}
 }

  System.out.print(myArray[iRow][iColumn]);
 }
  }

Answer 1

int iRow = 0; //Counter row
int iColumn = 0;  //Counter column
int [][] myArray = new int [row][column];
... while ...
int k = sc.nextInt;
if(iRow < myArray.length && iColumn < myArray[iRow].length) // the counter cant be greater than the array row; same with column
{
  myArray[iRow][iColumn] = k;
  iColumn++;
  if(iColumn == myArray[iRow].length)  //if you access the last column; go to the next row
  {
     iColumn = 0;
     iRow++;
  }


}

此代码将填充您的数组[] []。

Answer 2

只需加入循环

//{...}
int newLineAfter = 4;

for (int k: row) {
 System.out.print(k);
 System.out.print("\t");
 //when k will be 4*n- 4, 8, 12, 16... 
 if (k % newLineAfter == 0) {
  System.out.println();
 }
}
System.out.println();
//{...}

％是模运算符，它返回整个除法后的余数例如。

我想读取一个文本文件并以8 * 8数组形式

2 个答案: