vb.net矩阵相乘,矩阵与矩阵相乘
vb求两个矩阵的乘积
Public Sub MatrixMultiply(byref m() As Single, byref n() As Single,byref ReturnValue() As Single)
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Dim i As Long, j As Long, k As Long, row As Long, column As Long, max As Long
row = UBound(m, 1)
column = UBound(n, 2)
max = UBound(m, 2)
ReDim ReturnValue(1 To row, 1 To column)
For i = 1 To row
For j = 1 To column
For k = 1 To max
ReturnValue(i, j) = ReturnValue(i, j) + m(i, k) * n(k, j)
Next
Next
Next
End Sub
VB.NET写了一个矩阵乘法的程序 代码如下
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求助！用Vb.net编写两个矩阵相乘！
Public Shared Sub Main()
Dim a As Integer, b As Integer, c As Integer, d As Integer
Console.WriteLine("该程序将求出两个矩阵的积:")
Console.WriteLine("请指定矩阵A的行数:")
a = Integer.Parse(Console.ReadLine())
Console.WriteLine("请指定矩阵A的列数:")
b = Integer.Parse(Console.ReadLine())
Dim MatrixA As Integer(,) = New Integer(a - 1, b - 1) {}
For i As Integer = 0 To a - 1
For j As Integer = 0 To b - 1
Console.WriteLine("请输入矩阵A第{0}行第{1}列的值:", i + 1, j + 1)
MatrixA(i, j) = Integer.Parse(Console.ReadLine())
Next
Next
Console.WriteLine("矩阵A输入完毕.")
Console.WriteLine("请指定矩阵B的行数:")
c = Integer.Parse(Console.ReadLine())
Console.WriteLine("请指定矩阵B的列数:")
d = Integer.Parse(Console.ReadLine())
Dim MatrixB As Integer(,) = New Integer(c - 1, d - 1) {}
For i As Integer = 0 To c - 1
For j As Integer = 0 To d - 1
Console.WriteLine("请输入矩阵A第{0}行第{1}列的值:", i + 1, j + 1)
MatrixB(i, j) = Integer.Parse(Console.ReadLine())
Next
Next
Console.WriteLine("矩阵B输入完毕.")
Console.WriteLine("矩阵A为:")
outputMatrix(MatrixA, a, b)
Console.WriteLine("矩阵B为:")
outputMatrix(MatrixB, c, d)
If b c Then
Console.WriteLine("矩阵A的列数与矩阵B的行数不相等,无法进行乘积运算!")
Return
Else
Console.WriteLine("矩阵A与矩阵B的乘积为:")
End If
Dim MatrixC As Integer(,) = New Integer(a - 1, d - 1) {}
For i As Integer = 0 To a - 1
For j As Integer = 0 To d - 1
MatrixC(i, j) = 0
For k As Integer = 0 To b - 1
MatrixC(i, j) += MatrixA(i, k) * MatrixB(k, j)
Next
Next
Next
outputMatrix(MatrixC, a, d)
End Sub
Private Shared Sub outputMatrix(MatrixX As Integer(,), rowCount As Integer, columnCount As Integer)
For i As Integer = 0 To rowCount - 1
For j As Integer = 0 To columnCount - 1
Console.Write(MatrixX(i, j) vbTab)
Next
Console.WriteLine()
Next
End Sub
End Class
矩阵相乘 VB代码
'建立4个label1(),index 0--3。6个label2()，index 0--5。6个text1(),index 0--5
'建立1个label3,两个command1和2
'Form1.MaxButton = False
Dim I As Byte, J As Byte, A As Byte, B As Byte
Dim M As Byte, N As Byte, MN As Byte
Dim JZ1() As Single, JZ2() As Single, JZ3() As Single
Dim SS As String
Private Sub Command1_Click()
If Command1.Caption = "确定" Then
Command1.Caption = "完成"
ReDim JZ1(1 To M, 1 To MN) As Single
ReDim JZ2(1 To MN, 1 To N) As Single
ReDim JZ3(1 To M, 1 To N) As Single
For I = 0 To 5
Text1(I).Locked = True
Text1(I).BackColor = HF0F0F0
Text1(I).BorderStyle = 0
Next I
Label3.Caption = "请输入相乘的两个矩阵,输入完成后按完成键"
For I = 1 To M
For J = 1 To MN
JZ1(I, J) = Val(InputBox("第一个矩阵____第" + Str(I) + "行 第" + Str(J) + "列元素:", "输入矩阵", 3))
CurrentX = 100 + (J - 1) * 350
CurrentY = 1000 + (I - 1) * 200
Print JZ1(I, J)
Next
Next
For I = 1 To MN
For J = 1 To N
JZ2(I, J) = Val(InputBox("第二个矩阵____第" + Str(I) + "行 第" + Str(J) + "列元素:", "输入矩阵", 3))
CurrentX = 3000 + (J - 1) * 350
CurrentY = 1000 + (I - 1) * 200
Print JZ2(I, J)
Next
Next
'Select Case M
ElseIf Command1.Caption = "完成" Then
Command1.Caption = "重新开始"
For I = 1 To M
For J = 1 To N
JZ3(I, J) = 0
For A = 1 To MN
JZ3(I, J) = JZ3(I, J) + JZ1(I, A) * JZ2(A, J)
Next
CurrentX = 6000 + (J - 1) * 350
CurrentY = 1000 + (I - 1) * 200
Print JZ3(I, J)
Next
Next
Else
Form_Load
End If
End Sub
Private Sub Command2_Click()
End
End Sub
Private Sub Form_Load()
Cls
Form1.Width = 9000
Form1.Height = 7000
For I = 0 To 2
Label1(I).Width = 1000
Label1(I).Height = 200
Label1(I).Top = 0
Label1(I).Left = 700 + I * 3000
Label1(I).Caption = "第" + Str(I + 1) + "个矩阵"
Next
For I = 0 To 5
Text1(I).Width = 400
Text1(I).Height = 200
Text1(I).Top = 300
Label2(I).Width = 200
Label2(I).Height = Text1(I).Height
Label2(I).Top = Text1(I).Top + 50
Text1(I).Text = 2
Text1(I).Alignment = 1
If I Mod 2 Then
Text1(I).Left = I * 1500 - 300
Label2(I).Caption = "列"
Else
Text1(I).Left = 300 + I * 1500
Label2(I).Caption = "行"
End If
Label2(I).Left = Text1(I).Left + 450
Next
M = 2
N = 2
MN = 2
Text1(2).Locked = True
Text1(4).Locked = True
Text1(5).Locked = True
Text1(0).Locked = False
Text1(1).Locked = False
Text1(3).Locked = False
For I = 0 To 5
Text1(I).BackColor = HFFFFFF
Text1(I).BorderStyle = 1
Next I
Command1.Caption = "确定"
Command2.Caption = "退出"
Label3.Caption = "请输入矩阵的行和列，完成后按确定键"
End Sub
Private Sub Text1_Change(Index As Integer)
Text1(2).Text = Text1(1).Text
Text1(4).Text = Text1(0).Text
Text1(5).Text = Text1(3).Text
M = Val(Text1(0).Text)
MN = Val(Text1(1).Text)
N = Val(Text1(3).Text)
End Sub
已经运行过。
vb.net 向量和矩阵相乘，"return B(j)"报错“索引超出了数组界限”，程序如下，在线急等！！！
可以通过下断点方式，查看一下A() ，R(,) 元素的个数，是否为3和2
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