public JZ Multiply(JZ other) //矩阵乘法
{ // 检查行列数是否符合要求
if (numColumns != other.GetNumRows())
{
throw new Exception("矩阵的行/列数不匹配。");
}
JZ result = new JZ(numRows, other.GetNumColumns());
double value;
for (int i = 0; i < result.GetNumRows(); ++i)
{
for (int j = 0; j < other.GetNumColumns(); ++j)
{
value = 0.0;
for (int k = 0; k < numColumns; ++k)
{
value += GetElement(i, k) * other.GetElement(k, j);
}
result.SetElement(i, j, value);
}
}
return(result);
}
public JZ Subtract(JZ other)//矩阵减法
{
if (numColumns != other.GetNumColumns() || numRows != other.GetNumRows())
{
throw new Exception("矩阵的行/列数不匹配。");
}
// 构造结果矩阵
JZ result = new JZ(this);
// 进行减法
for (int i = 0; i < numRows; ++i)
{
for (int j = 0; j < numColumns; ++j)
{
result.SetElement(i, j, GetElement(i, j) - other.GetElement(i, j));
}
}
return(result);
}
public JZ Add(JZ other) //矩阵加法
{ // 检查行列数是否相等
if (numColumns != other.GetNumColumns() || numRows != other.GetNumRows())
{
throw new Exception("矩阵的行/列数不匹配。");
}
// 构造结果矩阵
JZ result = new JZ(this);
// 进行加法
for (int i = 0; i < numRows; ++i)
{
for (int j = 0; j < numColumns; ++j)
{
result.SetElement(i, j, GetElement(i, j) + other.GetElement(i, j));
}
}
return(result);
}