java - 如何将字符串拆分为二维数组并根据行访问每个分组？

Question

我想知道如何分离一个字符串并将其自动分配给二维数组的特定行，其方式与下面实例化一维数组的方式相同:

public class TestArray {
  public static void main (String [] args) {

    String file1description= "We went to the mall yesterday.";
    String[] file1tags;
    String delimiter= " ";
    file1tags = file1description.split (delimiter);
    for (int i = 0; i < file1tags.length; i++) {
      System.out.println (file1tags[i]);
    }
  }
}

如果有任何更简单的方法，请分享。如您所知，我是一个新手，但我愿意学习。在此示例中，每个单词由分隔符分隔并自动存储到“file1tags”数组中。我如何使用二维数组执行此操作，以便我可以调用具有相同功能的多个数组？提前致谢!

Answer 1

public static String [][] to2dim (String source, String outerdelim, String innerdelim) {

    String [][] result = new String [source.replaceAll ("[^" + outerdelim + "]", "").length () + 1][]; 
    int count = 0;
    for (String line : source.split ("[" + outerdelim + "]"))
    {
        result [count++] = line.split (innerdelim);
    }
    return result;
}

public static void show (String [][] arr)
{
    for (String [] ar : arr) {
        for (String a: ar) 
            System.out.print (" " + a);
        System.out.println ();
    }
}   

public static void main (String args[])
{
    show (to2dim ("a b c \n d e f \n g h i", "\n", " "));
}

新手友好:

public static String [][] to2dim (String source, String outerdelim, String innerdelim) {
    // outerdelim may be a group of characters
    String [] sOuter = source.split ("[" + outerdelim + "]"); 
    int size = sOuter.length;
    // one dimension of the array has to be known on declaration:
    String [][] result = new String [size][]; 
    int count = 0;
    for (String line : sOuter)
    {
        result [count] = line.split (innerdelim);
        ++count;
    }
    return result;
}