Question

我想创建一个动态数组的动态数组，我该怎么做？我已尝试使用AddRange()方法的列表列表。我也试过迭代数组。

显示我正在尝试做的事情可能更有意义。我无法让它发挥作用：

String[] lines = System.IO.File.ReadAllLines(fileName);
String[] linesArr;
String[][] MultiArr;
int i = 0;

foreach (string line in lines)
{
    if (line.Contains("EFIX"))
    {
        linesArr = line.Split(delimiterChars);
        for (int x = 0; x < linesArr.Length; x++)
        {
            MultiArr[i][x] = linesArr[x];
        }
    Console.WriteLine(fixationsData[i]);
    i++;
    }
}

Answer 1

使用字符串列表列表应该可以正常工作。这就是我写的东西。

var lines = System.IO.File.ReadAllLines(fileName);
var multiArr = new List<List<string>>();
var i = 0;

foreach (var line in lines.Where(line => line.Contains("EFIX")))
{
    multiArr.Add(line.Split(delimiterChars).ToList());
    Console.WriteLine(fixationsData[i]);
    i++;
}

Answer 2

LINQ使这非常简单。

string[][] data = File.ReadLines(filename)
    .Where(line => line.Contains("EFIX"))
    .Select(line => line.Split(delimiterChars))
    .ToArray();//omit this last call to allow the data to be streamed, 
    //greatly removing the memory footprint of the application at no real 
    //additional cost, assuming you have no compelling reason to eagerly 
    //load the whole file into memory.

foreach(var line in data)
    Console.WriteLine(line);

Answer 3

String[] lines = System.IO.File.ReadAllLines(fileName);
String[] linesArr;
List<String[]> MultiArr = new List<String[]>();


foreach (string line in lines)
{
    if (line.Contains("EFIX"))
    {
    linesArr = line.Split(delimiterChars);
    MultiArr.Add(linesArr);
    Console.WriteLine(fixationsData[i]);
    }
 }

这是一个字符串数组列表。这就是你要找的东西。

制作一个多维锯齿状数组

3 个答案: