Question

如何从此（在给定链接下方）文件（.txt）中读取输入并将其存储在2-d数组或2d向量中？

输入文件链接：

http://spark-public.s3.amazonaws.com/algo1/programming_prob/kargerMinCut.txt

P.S。 - 我不想将它们存储为字符串。

Answer 1

 public int[][] readFileToArray(String nameoffile){

    int[][] outArray = null;
    BufferedReader reader = null;
    try {

        reader =   new BufferedReader(new FileReader("C:\\Users\\U383250\\Desktop\\test.txt"));
        String line = null;
        String[] lineVariables = null;
        while ((line = reader.readLine()) != null ) {
            lineVariables = line.split("\n"); 
            if(lineVariables!=null && lineVariables.length>0){
                outArray = new int[lineVariables.length][100]; // put you line length here instead of 100 
                int i = 0;
                for(String string : lineVariables){
                    String[] eachLine = string.split("\\s+");
                    int j = 0;
                    for(String inLine : eachLine){
                        outArray[i][j] = Integer.parseInt(inLine);
                        j++;
                    }
                    i++;
                }
            }
        }

    } catch (IOException e) {
        System.err.println(e);
    }
    finally{
        try {
            reader.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    return outArray;
}

您应该根据自己的逻辑/要求指定二维数组的大小

Answer 2

定义我们编写的2D数组

int x[5]//(rows)[5]//(coloums)

用c ++读取文件中的输入

2 个答案: