Question

我正在尝试在c＃中对文件进行排序，该文件包含字符串（列表中不同的星期几）。正常数组上的排序工作得到了一个例子

string[] array = { "Monday", "Thursday", "Monday", "Wednesday", "Friday", "Tuesday", "Friday", "Tuesday", "Thursday", "Wednesday" };

当通过排序算法时 - 按顺序输出日期：周一周一周五周五周四周四周二周二周三周三。但是当我将数组更改为文件数组（如下面的代码所示）时，它没有排序。我对c＃编程很新。我试图使文件输出像上面那样。

我保留的代码中有一些部分，出于我自己的测试目的，所以我很抱歉这个混乱。会发生什么：

一些未显示的代码只是：用户输入的值介于1-10之间，这称为userFileInput。

我必须感谢任何帮助。谢谢！

CODE：

string[] value = MethodA();
            //Console.WriteLine(value[1]);

            string[] array = { value[userFileInput - 1] }; //userFileInput is the users choice of file
            //string[] array = { "Monday", "Thursday", "Monday", "Wednesday", "Friday", "Tuesday", "Friday", "Tuesday", "Thursday", "Wednesday" };
            InsertSort(array);
            for (int x = 0; x < array.Length; x++)
                Console.WriteLine(array[x]);

           Console.WriteLine("Original File --------------------------------------------------\n");
           Console.WriteLine(value[userFileInput - 1]);

           Console.ReadKey();
        }





        static string[] MethodA() //FILE METHOD - READS IN THE FILES THEN RETURNS THEM TO MAIN METHOD
        {
            StreamReader dayFile = new StreamReader("c:..\\Files\\Day.txt"); StreamReader dateFile = new StreamReader("c:..\\Files\\Date.txt");
            StreamReader sh1Open = new StreamReader("c:..\\Files\\SH1_Open.txt"); StreamReader sh1Close = new StreamReader("c:..\\Files\\SH1_Close.txt");
            StreamReader sh1Volume = new StreamReader("c:..\\Files\\SH1_Volume.txt"); StreamReader sh1Diff = new StreamReader("c:..\\Files\\SH1_Diff.txt");
            StreamReader sh2Open = new StreamReader("c:..\\Files\\SH2_Open.txt"); StreamReader sh2Close = new StreamReader("c:..\\Files\\SH2_Close.txt");
            StreamReader sh2Volume = new StreamReader("c:..\\Files\\SH2_Volume.txt"); StreamReader sh2Diff = new StreamReader("c:..\\Files\\SH2_Diff.txt");

            string dayString = dayFile.ReadToEnd(); string dateString = dateFile.ReadToEnd(); string Sh1OpenString = sh1Open.ReadToEnd(); string Sh1CloseString = sh1Close.ReadToEnd();
            string Sh1VolumeString = sh1Volume.ReadToEnd(); string Sh1DiffString = sh1Diff.ReadToEnd(); string Sh2OpenString = sh2Open.ReadToEnd(); string Sh2CloseString = sh2Close.ReadToEnd();
            string Sh2VolumeString = sh2Volume.ReadToEnd(); string Sh2DiffString = sh2Diff.ReadToEnd();

            string[] fileArray = new string[] { Sh1OpenString, Sh1CloseString, Sh1VolumeString, Sh1DiffString , dateString ,  Sh2OpenString, Sh2CloseString, Sh2VolumeString, Sh2DiffString ,dayString };
            return fileArray;
        }

        static void InsertSort(IComparable[] array)
        {
              int i, j;

            for (i = 1; i < array.Length; i++)
            {
                IComparable value = array[i];
                j = i - 1;
                while ((j >= 0) && (array[j].CompareTo(value) > 0))
                {
                    array[j + 1] = array[j];
                    j = j - 1;
                }
                array[j + 1] = value;

            } 

        }

Answer 1

我认为问题在于你在数组中保持这样的想法

string array = new[] { "Monday Saturday Monday", "Wednesday Thursday Monday" , ... };

看起来应该是这样的

string array = new[] { "Monday", "Saturday", "Monday", "Wednesday", "Thursday" , "Monday" , ... };

要制作这种数组，您可以遍历文件中的所有行并将其添加到列表中。

public List<string> ReadAllLines(StreamReader sr)
{
    List<string> allLines = new List<string>();
    string line; 
    while ((line = sr.ReadLine()) != null) 
    {
        allLines.Add(line);
    }
    return allLines;
}

而不是这种类型的代码行

string dayString = dayFile.ReadToEnd();

您将此行与我们创建的方法一起使用，该方法将从文件中返回分隔的行。

List<string> dayString = ReadAllLines(dayFile);
// to the same with the rest of the files

从文件中读取所有行后，将其追加到fileArray。完成数组后，您可以返回它。我们必须更改MethodA中的string[][]返回类型。

 List<string[]> fileArray = new List<string>();
 fileArray.Add(fileArray.ToArray());
 // add from other files too
 return fileArray.ToArray();

您可以像这样使用

// rest of the code
string[][] value = MethodA(); // notice string[][]
string[] array = value[userFileInput - 1]; //userFileInput is the users choice of file
InsertSort(array);
//rest of the code

尝试使用Insertion排序c＃对文件进行排序

1 个答案: