CODEWITHSUNDEEP
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Subliminal Hash
Subliminal Hash

Reputation: 13742

replacing multiple identical characters with one in a string

I have a string as follows;

dim str as string = "this       is    a string      .   "

I want to identify those multiple space chars and replace with one space char. using the replace function will replace all of them, so what is the correct way of doing such task?

Upvotes: 0

Views: 1124

Answers (4)

Rad
Rad

Reputation: 8389

I'd use the \s+ modifier, which is easier to read

public Regex MyRegex = new Regex(
      "\\s+",
    RegexOptions.Multiline
    | RegexOptions.CultureInvariant
    | RegexOptions.Compiled
    );


// This is the replacement string
public string MyRegexReplace =   " ";

string result = MyRegex.Replace(InputText,MyRegexReplace);

Or in VB

Public Dim MyRegex As Regex = New Regex( _
      "\s+", _
    RegexOptions.Multiline _
    Or RegexOptions.CultureInvariant _
    Or RegexOptions.Compiled _
    )


Public Dim MyRegexReplace As String =  " "


Dim result As String = MyRegex.Replace(InputText,MyRegexReplace)

Upvotes: 1

Andrew Garrison
Andrew Garrison

Reputation: 7027

Use the Regex class to match the pattern of "one or more spaces", and then replace all of those instances with a single space.

Here is the C# code to do it:

Regex regex = new Regex(" +");
string oldString = "this       is    a string      .   ";
string newString = regex.Replace(oldString, " ");

Upvotes: 2

Tim Hoolihan
Tim Hoolihan

Reputation: 12396

import System.Text.RegularExpressions            

dim str as string  = "This is a      test   ."
dim r as RegEx = new Regex("[ ]+")
str = r.Replace(str, " ")

Upvotes: 2

Eoin Campbell
Eoin Campbell

Reputation: 44308

Use a regular expression. as suggested by this other SO user here

Upvotes: 0

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