将多个2D矩阵存储在一个数组中

时间:2017-04-15 21:45:01

标签: java arrays matrix

我正在尝试将多个矩阵存储到一个数组中(每个矩阵具有相同的维度),我认为我的逻辑是正确的,但代码运行不正确。我在文本文件中的输入如下所示(例如):

0 0 0 0 0 
 0 0 0 0 0 
0 0 0 0 0

0000000000
00      00
0000000000

000 00 000
00 000 00 
000 00 000 

所以在这个例子中,每个''都算作一个我转换为-1的字符,每个新行都是一个新的矩阵。我已经找到了行数和列数,我告诉我将在文本文件中看到的对数。所以我想制作一个像这样的数组

pairs[number of pairs][rows][columns]. 

所以在这个例子中,它将是对[3] [3] [10]所以3个样本每个都有3×10矩阵。我的代码是:

int lines = 0;
BufferedReader brr = new BufferedReader(new FileReader(inFile));
        //now read and store in 2D matrix
        int[][][] samples = new int[pairs][rows][cols];
        while((lines = brr.readLine()) != null) {
            if (line > 2) { // to skip first 3 lines of text file
                for (int i = 0; i < pairs; i++) {
                    for (int j = 0; j < rows; j++) {
                        for (int k = 0; k < lines.length(); k++) {
                            //Cycle through each character in line
                            if (lines.charAt(k) == 'O' || lines.charAt(k) == '0') {
                                samples[i][j][k] = 1; //store in the matrix as a 1
                            }
                            else if (lines.charAt(k) == ' ') {

                                samples[i][j][k] = -1;
                                //store spaces as -1
                            }

                        }
                    }
                }
            }
            line++;
        }
        br.close();

抱歉,我的意思是编写我的输出,但是现在它正在分配变量,但它会继续重复。我的意思是,一旦完成第三次输入,for循环再次重复。换句话说,一旦i = 2(在这个例子中),并且j = 2,k = 2,它然后重复并且由于某种原因一切从头开始再次通过。

1 个答案:

答案 0 :(得分:-1)

我弄清楚发生了什么,我没有考虑每对之间的新线。所以工作代码是:

BufferedReader brr = new BufferedReader(new FileReader(inFile));
            //now read and store in 2D matrix
            int[][][] samples = new int[inVals.get(1)][rows][cols];
            int index = 0;
            while((lines = brr.readLine()) != null) {
                if (curr > 2) {                    
                    if (lines.equals("")) {
                            index++; //increment the pair we're on
                        }
                            for (int j = 0; j < rows; j++) {
                                for (int k = 0; k < lines.length(); k++) {
                                    //Cycle through each character in line
                                    if (lines.charAt(k) == 'O' || lines.charAt(k) == '0') {
                                        samples[index][j][k] = 1;
                                    }
                                    else if (lines.charAt(k) == ' ') {
                                        samples[index][j][k] = -1;
                                    }
                                }
                            }
                    }
                    curr++; //for the current line we're reading
                }
                brr.close(); //close buffered reader