英文:
Convert 2 text line of integers into 2D array
问题
我想将这些文本行转换为2D数组，使用BufferReader。有什么帮助吗？
英文:
I have some text lines like this
14 14 14 1432 32 32 32
I want to convert into 2D array with BufferReader. Any help?
答案1
得分: 0
我希望你正在寻找将字符串数组转换为缓冲区的方法public int[][] convertTo2DArray(String filename) {int[][] array = null;try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {String line;int row = 0;while ((line = reader.readLine()) != null) {String[] elements = line.split(" ");if (array == null) {array = new int[elements.length][];}array[row] = new int[elements.length];for (int i = 0; i < elements.length; i++) {array[row][i] = Integer.parseInt(elements[i]);}row++;}} catch (IOException e) {e.printStackTrace();}return array;}String filename = "path/to/your/file.txt";int[][] result = convertTo2DArray(filename);
英文:
I am hoping you are looking for convert string array in buffer
public int[][] convertTo2DArray(String filename) {int[][] array = null;try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {String line;int row = 0;while ((line = reader.readLine()) != null) {String[] elements = line.split(" ");if (array == null) {array = new int[elements.length][];}array[row] = new int[elements.length];for (int i = 0; i < elements.length; i++) {array[row][i] = Integer.parseInt(elements[i]);}row++;}} catch (IOException e) {e.printStackTrace();}return array;}String filename = "path/to/your/file.txt";int[][] result = convertTo2DArray(filename);
答案2
得分: 0
通过使用BufferedReader的lines()方法拆分您的行，然后可以使用映射将数字按空格拆分。（使用这个正则表达式可以在有多个空格字符的情况下拆分）
String input = "14 14 14 14\n32 32 32 32\n";BufferedReader reader = new BufferedReader(new StringReader(input));int[][] array = reader.lines().map(line -> Arrays.stream(line.split("\\s+")).mapToInt(Integer::parseInt).toArray()).toArray(int[][]::new);
英文:
By splitting your lines with the lines() method of BufferedReader, you can then use a map to split numbers with spaces. (using this regular expression allows to split even if there is more than one space character)
String input = "14 14 14 14\n32 32 32 32\n";BufferedReader reader = new BufferedReader(new StringReader(input));int[][] array = reader.lines().map(line -> Arrays.stream(line.split("\\s+")).mapToInt(Integer::parseInt).toArray()).toArray(int[][]::new);
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