字符串反转vb.net 字符串反转C语言

用VB6.0写字符串反转的程序

REM 这是VB.NET写的函数 VB6应该也是一样的

Function StrReverse(ByVal str As String)

Dim str2 As String = ""

Dim cs As Char() = str.ToCharArray()

For i As Integer = cs.Length - 1 To 0 Step -1

str2 = str2 + cs(i)

Next

Return str2

End Function

相关问答

Q1: vb中将字符串反转的代码是什么?

代码如下,你在Text1中输入原字符串后按Command1按钮Text2中就出现与原字符串逆序的字符串:

Dim Str as String

Private Sub Form_Click()

Text1 = ""

Text2 = ""

End Sub

Private Sub Command1_Click()

Str = Text1

Text2 = StrReverse(Str)

End Sub

Q2: VB.NET中字符串倒序的问题

好象有个StrReverse函数是直接反转字符串的吧..

我平时用的是VB6.但是.NET中应该也是可以用MID的

你注意看FOR 是从len-1到0的..而mid中是不允许出现0的..

你看看MID运行不了时,是不是返回I是0的时间

改成:

For i = Len(sstr) To 1 Step -1

试试了?

Q3: VB.net 字符转换问题 字符（汉字、数字、字母、符号）>gb2312>unicode>utf8， 以及逆转的方法

字符编码转换吗?

1.字符与gb2312(gbk的子集)：

Public Function GBKEncode(ByVal sInput As String) As String

Dim ret_GBKEncode As String = ""

Dim i As Integer

Dim startIndex As Integer = 0

Dim endIndex As Integer

Dim x() As Byte = System.Text.Encoding.Default.GetBytes(sInput) '字符以及字符串在vb2008中都是以unicode编码存储的

endIndex = x.Length - 1

For i = startIndex To endIndex

ret_GBKEncode = "%" Hex(x(i))

Next

Return ret_GBKEncode

End Function

'GBK解码

Public Function GBKDecode(ByVal sInput As String) As String

sInput = sInput.Replace("%", "")

Dim ret_GBKDecode As String = ""

Dim sLen As Integer = sInput.Length

Dim n As Integer = sLen \ 2

Dim sBytes(0 To n - 1) As Byte

'转化为字节码

For i As Integer = 1 To n

sBytes(i - 1) = CByte("H" sInput.Substring(2 * i - 2, 2))

Next

'将字节码转化为字符串

ret_GBKDecode = System.Text.Encoding.Default.GetString(sBytes)

Return ret_GBKDecode

End Function

2.Unicode字符串为UTF-8

Imports System.Text

Public Function StringAsUtf8Bytes(ByVal strData As String) As Byte()

Dim bytes() As Byte

bytes = Encoding.UTF8.GetBytes(strData)

Return bytes

End Function

'这里可以类推出好几种。

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