/// <summary>
/// 返回与x矩阵同名的零方阵
/// </summary>
/// <param name="s">行列数</param>
/// <param name="x">命名阵</param>
/// <returns>返回的矩阵</returns>
public static Matrix Zeros(int s, MNode[,] x)
{
ArrayList f = new ArrayList();
for (int i = 0; i < s * s; f.Add(0), i++)
{
;
}
return(Matrix.GenerateMatrix(s, f, x));
}
/// <summary>
/// 返回与x矩阵同名的随机方阵
/// </summary>
/// <param name="s">行列数</param>
/// <param name="n">命名阵</param>
/// <returns>返回生成的矩阵</returns>
public static Matrix Random(int s, MNode[,] n)
{
long tick = System.DateTime.Now.Ticks;
//Random ran = new Random((int)(tick & 0xffffffffL) | (int)(tick >> 32));
System.Random rand = new System.Random((int)(tick & 0xffffffffL) | (int)(tick >> 32));
ArrayList f = new ArrayList();
//for(int i = 0; i < s * s; f.Add(2 * rand.NextDouble() - 1), i++);
for (int i = 0; i < s * s; f.Add(rand.NextDouble()), i++)
{
;
}
//for (int i = 0; i < s * s; System.Console.Write(f[i]+" "), i++);
//System.Console.WriteLine();
return(Matrix.GenerateMatrix(s, f, n));
}
/// <summary>
/// 返回以n阵命名的单位阵
/// </summary>
/// <param name="s">行列数</param>
/// <param name="n">命名阵</param>
/// <returns>返回生成的单位阵</returns>
public static Matrix Eye(int s, MNode[,] n)
{
ArrayList f = new ArrayList();
int x = 0;
for (int i = 0; i < s * s; i++)
{
if (i == (s + 1) * x)
{
f.Add(1);
x++;
}
else
{
f.Add(0);
}
}
return(Matrix.GenerateMatrix(s, f, n));
}
