Question

我在特定文件中有n列和m行我怎么能但是每个col在不同的数组中？ *行数和列数可以更改

        String readline = null;
        readline = read.readLine();
        String[] getlength = readline.split(" ");
        cols = getlength.length;

        while (readline != null) {
            readline = read.readLine();
            rows++;
        }
        // Array of data 
        int[][] data = new int[rows][cols];
        // New bufferedReader to put the cursor on the top of the file
        read = new BufferedReader(new FileReader("1.txt"));
        // for loop to skip first three rows
        for (int i = 1; i <= 3; i++) {
            read.readLine();
        }

        // to set the file Data  into the array
        String line = null;
        line = read.readLine();
        do {

            readData = line.split(" ");

            for (int j = 0; j < readData.length; j++) {
                data[indexx][j] = Integer.parseInt(readData[j]);
            }

            indexx++;
            line = read.readLine();
        } while (line != null);

Answer 1

如果您不知道正在阅读的表格中的列数，则应使用ArrayList。一种可能的方式是：

[...]
ArrayList result = new ArrayList<int[]>();
line = read.readLine();
do {
  readData = line.split(" ");
  int[] row = new int[readData.length];
  for(int i = 0; i < readData.length; i++) {
    row[i] = Integer.parseInt(readData[i]);
  }
  result.add(row);
} while (line != null);

现在，如果您需要将结果作为数组，则可以执行以下转换：

int[] data = result.toArray(new int[result.size()]);

读取数据并将每个col存储在不同的数组中

1 个答案: