vb.net数的排列,vbnet数组排序方法

VB.NET数组的排序法？

如果你是从vb6刚过渡上vb。net，建议还是用冒泡排序法，容易理解。

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如果你正努力学习vb。net的方法，推荐一个例子如下：

Imports System

Imports System.Collections

Public Class SamplesArray

Public Class myReverserClass

Implements IComparer

' Calls CaseInsensitiveComparer.Compare with the parameters reversed.

Function Compare(x As Object, y As Object) As Integer _

Implements IComparer.Compare

Return New CaseInsensitiveComparer().Compare(y, x)

End Function 'IComparer.Compare

End Class 'myReverserClass

Public Shared Sub Main()

' Creates and initializes a new Array and a new custom comparer.

Dim myArr As [String]() = {"The", "QUICK", "BROWN", "FOX", "jumps", "over", "the", "lazy", "dog"}

Dim myComparer = New myReverserClass()

' Displays the values of the Array.

Console.WriteLine("The Array initially contains the following values:")

PrintIndexAndValues(myArr)

' Sorts a section of the Array using the default comparer.

Array.Sort(myArr, 1, 3)

Console.WriteLine("After sorting a section of the Array using the default comparer:")

PrintIndexAndValues(myArr)

' Sorts a section of the Array using the reverse case-insensitive comparer.

Array.Sort(myArr, 1, 3, myComparer)

Console.WriteLine("After sorting a section of the Array using the reverse case-insensitive comparer:")

PrintIndexAndValues(myArr)

' Sorts the entire Array using the default comparer.

Array.Sort(myArr)

Console.WriteLine("After sorting the entire Array using the default comparer:")

PrintIndexAndValues(myArr)

' Sorts the entire Array using the reverse case-insensitive comparer.

Array.Sort(myArr, myComparer)

Console.WriteLine("After sorting the entire Array using the reverse case-insensitive comparer:")

PrintIndexAndValues(myArr)

End Sub 'Main

Public Shared Sub PrintIndexAndValues(myArr() As [String])

Dim i As Integer

For i = 0 To myArr.Length - 1

Console.WriteLine(" [{0}] : {1}", i, myArr(i))

Next i

Console.WriteLine()

End Sub 'PrintIndexAndValues

End Class 'SamplesArray

'This code produces the following output.

'

'The Array initially contains the following values:

' [0] : The

' [1] : QUICK

' [2] : BROWN

' [3] : FOX

' [4] : jumps

' [5] : over

' [6] : the

' [7] : lazy

' [8] : dog

'

'After sorting a section of the Array using the default comparer:

' [0] : The

' [1] : BROWN

' [2] : FOX

' [3] : QUICK

' [4] : jumps

' [5] : over

' [6] : the

' [7] : lazy

' [8] : dog

'

'After sorting a section of the Array using the reverse case-insensitive comparer:

' [0] : The

' [1] : QUICK

' [2] : FOX

' [3] : BROWN

' [4] : jumps

' [5] : over

' [6] : the

' [7] : lazy

' [8] : dog

'

'After sorting the entire Array using the default comparer:

' [0] : BROWN

' [1] : dog

' [2] : FOX

' [3] : jumps

' [4] : lazy

' [5] : over

' [6] : QUICK

' [7] : the

' [8] : The

'

'After sorting the entire Array using the reverse case-insensitive comparer:

' [0] : the

' [1] : The

' [2] : QUICK

' [3] : over

' [4] : lazy

' [5] : jumps

' [6] : FOX

' [7] : dog

' [8] : BROWN

vb.net 排列组合 代码

第一题:

不需要任何控件,代码如下:

Private Sub Form_Click()

Dim A() As Integer, N As Integer

Dim St As String, I As Integer, J As Integer

Randomize

Do

St = InputBox("数字的个数", "输入", Int(Rnd * 100))

If St = "" Then

MsgBox "请输入数字!"

Else

N = Int(Val(St))

If N 1 Then

MsgBox "请输入大于0的数字!"

Else

Exit Do

End If

End If

Loop

ReDim A(N)

For I = 1 To N

Do

St = InputBox("第" + Str(I) + "个数字", "输入", Int(Rnd * 100))

If St = "" Then

MsgBox "请输入数字!"

Else

A(I) = Int(Val(St))

Exit Do

End If

Loop

Next

For I = 1 To N - 1

For J = I + 1 To N

If A(I) A(J) Then

A(0) = A(I)

A(I) = A(J)

A(J) = A(0)

End If

Next

Next

For I = 1 To N

Open App.Path "\" Trim(Str(I)) ".txt" For Output As #1

Print #1, A(I)

Close #1

Next

Print "已经把"; N; "个数写入到"; App.Path; "\1.txt 到 "; N; ".txt中.请查看."

End Sub

'已经运行过.

第二题:

DIM 是变量声明语句,它的格式为:

dim 变量名[as 格式] [,变量名[as 格式][,变量名[as 格式]......]

其中:

变量名:以字母或汉字开始的字串,代表一个变量

格式有以下几种:

属于数字的有五种:

(1)字节型:byte可取值0-255

(2)整形:integer可取值-32768至32767

(3)长整形:long(可取值范围很大的正负整数)

(4)单精度型:single(可取值小数)

(5)双精度型:double(可取值范围更大,小数位数更多的小数)

字符串型:string(可代表由字母\数字或汉字组成的字符集合)

布尔型:boolean(取值为ture\false)

日期型:date(可表示形如2009-5-26 02:36这样的组合)

如果要用姓名\住址\单位名称...等用字符串型(string)

eg:dim name as string(用name变量表示名字时,声明成字符串变量)

如果是用数字需要做计算,如工资\合计\人数....等要用数字型,但有一个原则,优先选用范围小的(按照字节型(byte)\整形(integer)\长整形(long)\单精度型(single)\双精度型(double)的顺序选择),够用就可以了,这样可以占用内存少,运算速度快.

eg:dim count as integer(用integer表示员工人数时,可声明成整形变量)

eg:dim sum as single(用sum表示工资时,可声明成单精度型变量)

不知是否说得清楚了.

vb.net中把十五个数成三行五列排列怎么写代码

刚回答过一个，给你一个参考！

Public Class Form1

Dim A(2, 4) As Integer '这里声名的二维是3和5是从0算起的

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

TextBox1.Text="" '清空文本

'Dim A(2, 4) As Integer '也可以在这里面声明。

Dim i As Integer : Dim j As Integer

For i = 0 To 2 '从0算起到2就是3次计数。

For j = 0 To 4 '从0算起到4就是5次计数。

A(i, j) = Int(Rnd() * 400 - 200)'随机生成一个号码 

TextBox1.Text = A(i, j)  " "  '把一行的5个数链接排出来。

Next

TextBox1.Text = vbCrLf '添加换行

Next

End Sub

End Class

vB.net语言编写N个数字数组排序可自定义数组长度的

Dim d() As Integer

Dim n As Integer

Dim i As Integer

Dim j As Integer

Dim T As Integer

n = Val(InputBox("请输入n，确定数组的元素个数"))

ReDim d(n)

'用随机函数生成正整数数组

Randomize

For i = 1 To n

d(i) = Int(Rnd * 100 + 1)

Next i

'输出

Print

For i = 1 To n

Print d(i),

Next i

'从小到大排序

For i = 1 To n - 1

For j = i + 1 To n

If d(i) d(j) Then

T = d(i)

d(i) = d(j)

d(j) = T

End If

Next j

Next i

'输出

Print

For i = 1 To n

Print d(i),

Next i

VB.NET 程序 随机产生10个整数并进行排序

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Dim N As Integer = 9

Randomize()

Dim xx(9) As Integer

For i As Integer = 0 To N

xx(i) = Int(Rnd() * 1000) '产生 [0,1000) 之间的整数

Next

For i As Integer = 0 To N - 1

For j As Integer = i + 1 To N

If xx(i) xx(j) Then

Dim temp As Integer = 0

temp = xx(i) : xx(i) = xx(j) : xx(j) = temp

End If

Next

Next

Dim sum As Integer = 0

For i As Integer = 0 To N

TextBox1.Text += xx(i) vbCrLf

sum += xx(i)

Next

TextBox1.Text += "最大值：" xx(9) vbCrLf "最小值：" xx(0) vbCrLf "平均值：" sum / 10

End Sub

End Class