Find The First Non-repeating Character In A String?
Nov 13, 2011I need to write a function to find the first non-repeating character in a string in VB.NET. Does the code below look ok?
Module Module2
Sub Main()
' Unit test
[code]....
I need to write a function to find the first non-repeating character in a string in VB.NET. Does the code below look ok?
Module Module2
Sub Main()
' Unit test
[code]....
I have an array like this:
Dim t1 as string=Textbox1.Text
Dim invalid as string()={";",".","""," ","'"}
I want to check that if a character in my array is in the text box then a message appear.
How do I find last but one character in a vbstring
for e.g. In the string V1245-12V0 I want to return V
I how do I find the last but one character in a string in VB.net.for e.g. I have a string Dim strTicket as string="56789-091F0"I want the value "F"
View 5 RepliesI have an array like this:
[code...]
I want to check that if a character in my array is in the text box then a message appear.
How do I check to see if the first character of a string is a number in VB.NET? I know that the Java way of doing it is:
char c = string.charAt(0);
isDigit = (c >= '0' && c <= '9');
I have a string of text being sent through a serial port to a text box (Text1.Text). The string has some symbols in in which I am assuming are Hex values. The hex values are Hex(1), Hex(4), Hex(12), and Hex(17). What I need to do is find the position of these hex symbols in the string of text so that I can split or grab the data after the specific hex symbol. I am not able to use substring or indexof or instr ... or at least I am not using it correctly to find the appropriate symbol.I was thinking if I need to iterate through the string character by character and grab each symbol or text and get their value??? If it is one of the hex symbols, then get the index number (or position).
View 1 RepliesI have built a blog platform in VB.NET where the audience are very young, and for some reason like to express their commitment by repeating sequences of characters in their comments.
Examples:
Hi!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3
LOLOLOLOLOLOLOLOLOLOLOLOLLOLOLOLOLOLOLOLOLOLOLOLOL
..and so on.
I don't want to filter this out completely, however, I would like to shorten it down to a maximum of 5 repeating characters or sequences in a row.I have no problem writing a function to handle a single repeating character. But what is the most effective way to filter out a repeating sequence as well?This is what I used earlier for the single repeating characters
Private Shared Function RemoveSequence(ByVal str As String) As String
Dim sb As New System.Text.StringBuilder
sb.Capacity = str.Length
[code]....
I have a networkstream (using C#/VB.NET). while on reading values coming like this:
&% 68 kg K A&% 23 kg K A&% 174 kg K A &% 68 kg
&% 34 kg K A&% 2334 kg K A&% 68 kg K A &% 68 kg K A
&% 2348 kg K A&% 78 kg K A&% 28 kg K A&% 68 kg
The numerical(weight) value will be continuously varying.
Every time i am reading the starting of the stream differs. But the pattern remains the same. How to split that into '&% 78 kg K A' which represents one set.
How to extract the weight value from this stream using Regex or any other methods?
[Code]...
For each character of this string I want a new character out of the string and then remove the character from the list of characters that still maybe used for other characters. It may not get the same character, you could basically just call this encryption, but it's not what I am making. I don't want to waste my time doing this one hour while VB can do this for me in <1 second.
I am writing a hangman type game and I am displaying the word to the user in a label as all *'s, but I cannot figure out how to have just one of the *'s changed in the label to the correct letter when the user inputs the correct letter into the text box and clicks the check letter button.Everything else in the program works perfectly, except for this part.[code]When I use the .Replace it changes all of the *'s to the correct selected letter.
View 2 RepliesI want to make all possible combination of each and every words from a entered string (without repeating). I found on net but can't get code for word combination instead I got character combination.
View 8 Repliesthe coding is to 'Get input string and put its character into List, and replace the character with other.'but having problem putting each character into List and also replacing it,[code]
View 2 RepliesI have this code:
Public Class Form1
Private HowManytoGenerate As Integer
Private HowManyDone As Integer
[code]...
The batch section should generate a new random value and write it every time it do the loop, but...It is repeating values. There are more than one line with the same value. What I'm doing wrong?
I've been working with the substring command and after coding up all the things I needed it to do, I saw a post on here where the "For Each" statement was used basically to do the same thing.Lets say we just want to take a string apart one character at a time and add each character to a label. Which would be more efficient?I made a cheap example to show ...
Code:
ABinary = "0110 1100 0001 1011"
For x = 0 To Len(ABinary) - 1
[code].....
I have read the file into the stream and I just want to know how to find the frequencies of each character, two characters, three characters and so on
View 1 RepliesI am trying to develop a HANGMAN game and i need to implement a button where the user can click on it to "buy" letters. So, i designated 2 text boxes (one visible containing stars and another one not visible containing the word that should be guessed), and i wrote the following piece of code so that once the user presses the button any of the stars will turn to the correct letter. My question is, i found the index of "*" and removed it, and now i want to insert the corresponding char with this index (WordInLetters). How can i find what char is at index "index" in vb.net?
Private Sub picBuyLetters_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles picBuyLetters.Click
Dim index As Integer = txtWordinStars.Text.IndexOf("*")
[Code].....
Is it possible that after you find a string, backup until you find a specific character and copy it?For example, I am looking for "bread". The text is milk8andbread. Would it be possible to start at bread, back up until eight, and just copy "andbread"?
View 4 RepliesI am using a simple regular expression (in C#) to find a whole word within a block of text.
The word may appear at the beginning, end or in the middle of a the text or sentence with in the text.
The expression I have been using word has been working fine however if the word included a special character (that has been escaped) it no longer works. The boundary is essential so that we do not pick up words such as vb.net as a match for .net.[code]...
I need to convert a string array into a very long string with following requirement:
can not using any character escaping can not using XML can not using single character as separator (e.g. comma or space as separator)
I'm looking to use a RegularExpress to find a specific pattern for character within a sentence.I'm look to find a any Word that start with '_', that contain only upper case character with number and with like
'_ABCF'
'_EEE1'
But not
'ABC_DE'
until now I've found "^_([A-Z]|[0-9])*", but this pattern do not seam to work within a complete sentence.
Does VB have an equivalent to the @ symbol in C# to quickly and efficiently escape a SQL command line string?
View 1 RepliesI want split a gridview row on an html tag. How can i do this preferably in C#??.row.cells[1].Text.Split("htmltag")
View 7 RepliesUsing VB.Net & SQL Server 2005[code]...
I want to take a first character from the string (s)
i tried to read html contents by striping html tags in a string.when i try to print that string i got - character. how to remove this character?
View 2 RepliesHow do I add a space between every character in a string of text?For example:Change abcdefg"
To "a b c d e f g"I have two text boxes on my form, one for input, the other for output of the re-formatted string.
I would like to know how i can count the character from a string.dim mystring as string = "myfilename_employee--2010-11-23-45-00--empid200"i need to see if this string have "--" two if it is less or more than two i need to alert to the user.
View 2 RepliesI have been making a VB app that adds two text boxes together. This all adds up fine but I was wondering if there was any code to be able to turn the answer into a value such as 10.54 instead of 10.54653
View 14 RepliesI have been making a VB app that adds two text boxes together. This all adds up fine but I was wondering if there was any code to be able to turn the answer into a value such as 10.54 instead of 10.54653Basically turning the answer into a money value?
View 13 Repliesi want to compare each character is string with the pattern and if any character matches it should give error.. eg, i have "ABCDEF" as patern to matched with.
and "OULJYSA" to be macthed with the patern, as u see A is common, so in that case it should display msgbox("match found") is there any way to do it? i did it in php using regex and preg_match()