VB.net中如何求出2维数组，每个维度上的值得个数

每行的数字个数不同,你说的这是不规则数组,解决方案如下:

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Dim b As String = ""

Dim a As Integer()() = New Integer(9)() {}

a(0) = New Integer() {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

a(1) = New Integer() {0, 3, 4, 5}

a(2) = New Integer() {0, 4, 5, 6, 7}

a(3) = New Integer() {0, 6, 5, 8, 9, 1}

a(4) = New Integer() {0, 2, 5, 1, 7}

a(5) = New Integer() {0, 4, 2, 6, 7, 3}

a(6) = New Integer() {0, 4, 5, 3, 2}

a(7) = New Integer() {0, 4, 1, 6, 2, 8, 5, 3}

a(8) = New Integer() {0, 4, 9, 6, 3, 5, 7}

a(9) = New Integer() {0, 1, 5, 9, 7, 6, 2, 4, 3, 8}

For i As Integer = 0 To a.GetUpperBound(0)

b = "第" i + 1 "行有" a(i).GetUpperBound(0) + 1 "个数" vbCrLf

Next

MessageBox.Show(b)

用vb.net求三个数中的最大值以及最小值函数的编写

MaxOrMin 指示返回最大还是最小.

Private Function Math(ByVal num1 As Integer, ByVal num2 As Integer, ByVal num3 As Integer, ByVal MaxOrMin As Short) As Integer

Dim s() As Integer = {num1, num2, num3}

Dim max, min As Integer

If s(0) s(1) Then

min = s(0)

max = s(1)

End If

If s(1) s(2) Then

min = s(1)

max = s(2)

End If

If MaxOrMin = 0 Then Return max

If MaxOrMin = 1 Then Return min

End Function

VB求众数

Option Explicit

Private Sub Form_Load() '所有的数据以空格间隔输入在text中,注意最后一个数字输入好后还要输入空格的

Text1 = "11 22 1 3 3 4 5 6 5 44 3 2 3 4 5 6 7 8 6 5 4 3 2 2 1 1 1 1 2 3 4 4 5 5 6 6 7"

Text1 = Text1 "4 5 6 7 8 9 9 9 9 9 8 7 6 5 5 4 3 3 3 "

End Sub

Private Sub Command1_Click()

Dim A, i As Integer, flag As Boolean

Dim Temp() As String, N() As Integer, j As Integer, k As Integer

Dim max As Integer, B() As Integer '这里是用来求众数的，也就是出现最多次数的，因为众数可以不为一个，我这里就用数组表示了

A = Split(Text1, " ")

ReDim Temp(1)

ReDim N(1)

Temp(1) = A(0)

j = 1

For i = 0 To UBound(A) - 1

For k = 1 To j

If A(i) = Temp(k) Then

N(k) = N(k) + 1

flag = True

Exit For

End If

Next

If flag Then

flag = False

Else

j = j + 1

ReDim Preserve Temp(j)

ReDim Preserve N(j)

Temp(j) = A(i)

N(j) = 1

End If

Next

For i = 1 To j '这个循环可以显示出所有数出现的次数，可以用来检验

Print Temp(i) "出现了" N(i) "次"

Next

ReDim B(1) '这个循环是为了求出出现最多的数，因为有多个众数所以用这个方法了

max = N(1)

k = 1

B(1) = 1

For i = 1 To j

If max N(i) Then

max = N(i)

ReDim B(1)

B(1) = i

k = 1

ElseIf max = N(i) Then

k = k + 1

ReDim Preserve B(k)

B(k) = i

End If

Next

Print

Print "众数是："

For i = 1 To k

Print Temp(B(i))

Next

End Sub

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