在C#中将矩阵写入txt文件

发布于 2024-12-09 21:55:59 字数 825 浏览 2 评论 0原文

我在 C# 中执行此操作

TextWriter tw = new StreamWriter("SQL_U.txt");
for (int j = 0; j < matrix.ColumnCount; j++)
{
     for (int i = 0; i < matrix.RowCount; i++)
     {
      tw.WriteLine(U[i, j] + " ");
     }
}
tw.Close();

，但得到的

-0,233694952850896 
-0,150092222507639 
-0,208798702657929 
-0,231787481025756 
-0,174773485921403 
-0,0407654849559224 
0,221253448397395 
0,186510884928728 
0,260534246686463 
0,187890851164781 
0,0878923620975135 
0,234198798909221 
0,291676946994878 
0,327785825667529 
0,237572713217582 
-0,0860652250783251 
-0,0421504222854907 
-0,00555780603925644

是

-0,233694952850896 -0,150092222507639 -0,208798702657929 -0,231787481025756 
-0,174773485921403 -0,0407654849559224 .....

如何修复它？

原文

I am doing this in c#

TextWriter tw = new StreamWriter("SQL_U.txt");
for (int j = 0; j < matrix.ColumnCount; j++)
{
     for (int i = 0; i < matrix.RowCount; i++)
     {
      tw.WriteLine(U[i, j] + " ");
     }
}
tw.Close();

but get

-0,233694952850896 
-0,150092222507639 
-0,208798702657929 
-0,231787481025756 
-0,174773485921403 
-0,0407654849559224 
0,221253448397395 
0,186510884928728 
0,260534246686463 
0,187890851164781 
0,0878923620975135 
0,234198798909221 
0,291676946994878 
0,327785825667529 
0,237572713217582 
-0,0860652250783251 
-0,0421504222854907 
-0,00555780603925644

instead

-0,233694952850896 -0,150092222507639 -0,208798702657929 -0,231787481025756 
-0,174773485921403 -0,0407654849559224 .....

How to fix it?

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南街九尾狐 2024-12-16 21:55:59

使用 Write 而不是 WriteLine 以防止开始新行。然后在每行完成后插入一个新行。

using (TextWriter tw = new StreamWriter("SQL_U.txt"))
{
    for (int j = 0; j < matrix.ColumnCount; j++)
    {
        for (int i = 0; i < matrix.RowCount; i++)
        {
            tw.Write(U[i, j] + " ");
        }
        tw.WriteLine();
    }
}

我还更改了您的代码以使用 using 而不是调用 Close ，以便即使出现异常，编写器也能正确处理。

使用此方法，您还可以在每行末尾写入一个额外的空格。如果这是一个问题，您可能需要稍微修改代码以根据索引有条件地写入此空间。

using (TextWriter tw = new StreamWriter("SQL_U.txt"))
{
    for (int j = 0; j < matrix.ColumnCount; j++)
    {
        for (int i = 0; i < matrix.RowCount; i++)
        {
            if (i != 0)
            {
                tw.Write(" ");
            }
            tw.Write(U[i, j]);
        }
        tw.WriteLine();
    }
}

Use Write instead of WriteLine to prevent starting a new line. Then insert a new line after each row is complete.

using (TextWriter tw = new StreamWriter("SQL_U.txt"))
{
    for (int j = 0; j < matrix.ColumnCount; j++)
    {
        for (int i = 0; i < matrix.RowCount; i++)
        {
            tw.Write(U[i, j] + " ");
        }
        tw.WriteLine();
    }
}

I also changed your code to use using instead of calling Close so that the writer is correctly disposed even if there is an exception.

Using this method you also write an extra space at the end of each line. If this is a problem you might want to modify your code slightly to write this space conditionally depending on the index.

using (TextWriter tw = new StreamWriter("SQL_U.txt"))
{
    for (int j = 0; j < matrix.ColumnCount; j++)
    {
        for (int i = 0; i < matrix.RowCount; i++)
        {
            if (i != 0)
            {
                tw.Write(" ");
            }
            tw.Write(U[i, j]);
        }
        tw.WriteLine();
    }
}

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