Binary Search Algorithm Applicable To VB 2010?
Sep 24, 2010
Im currently using the streamreader/writer method for writing to a text file im considering implementing a binary search to increase the efficiency of searching through records.
Qus: Does binary search require the text file to be a binary file?Do I need to do binary reader/writer instead of streamreader/writer And are there any tutorials regarding binary operations in vb 2010 this is my first attempt at coding binary operations and have no idea where to start
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Dec 15, 2011
my binary search isnt working, i think it has to do with the fact that im using a list and its searching thru an array
List
Option Strict On
Public Class Form1
[Code].....
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Jun 10, 2011
With writting a program that demotrates Binary Search Tree operation(insert, delete, and search)in VB.N NET?
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Jan 5, 2010
I'm creating a search function to search through a binary file and find a record based on the users input. Surprisingly, that isn't the problem! The problem I'm having is that as part of this I'm using a procedure to display results in text boxes, and I'm getting the error "Too many arguments to private sub display customer"I've encountered this error before, but never really knew what it was... Here is my code.
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
FilenameCust = "F:\College\CustomersFile.bin"
[code].....
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Jan 27, 2009
The line in code is giving me problems it is preventing me from searching the first part of the array but if I move it to the end or to any other spot the search wont work.
Public Sub AccountNumberSearch(ByVal a() As Account, ByVal accnum As Integer, ByVal numacc As Integer)
Dim x As Integer = 0
Do Until a(x).AccountNumber = accnum
x += 1
[Code] .....
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Jul 17, 2011
I want to write a simple beam search algorithm to solve a maze (like a tree, and the output must be the shortest path).So, if anyone have tried to write a beam search algorithm before, preferably in VB.NET language, it would be great if you can share it in a pseudo-code format.
Because, I have no idea on how to write the algorithm. I have tried to Google it, but I understand nothing.I found this source though (which I don't understand at all XD) [URL]..So, back to my question, how to write a beam search algorithm? Preferably, in VB.NET language and pseudo-code will be enough for me (an actual example code will be great though
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May 17, 2010
Binary Search in ListBox
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Apr 11, 2011
I am trying to write a program which performs a binary search. The user will input the name of a state in a textbox.I have a listbox which is populated with the 50 states in ABC order.The middle of the list must be determined and then determine which half of the list the state may be located. If the middle item is less than the state name the state should be in the second half of the list. If it's greater than the state name is should be in the first half of the list. The calculation for looking at the middle itemi the list is:
middle = CInt(first + last)/2)
There is a variable 'flag' which is initially set to false and then will be set to true if the state name is found. The variable first is initially set to 0 and last needs to be set to one less than the number of items in the list.Below is a very rough program fragment.
Code:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim i As Integer
Dim flag As Boolean = False
Dim first As Double = 0
[code]....
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Jan 17, 2012
I need to compare two tree-structured reports and show comparison results in a datagridview in vb.net. I think using tree structure should be efficient. But note that I DO NOT use a tree view to display results (I found a lot of help in tree view though). All I want to do is to construct two trees, and then search the trees and compare. I do not know how to write this in vb.net.
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Aug 4, 2009
We need to show the value entered and the number that it is compared to in the textbox and concatenated to the binary array. This is the code that I have so far:
Public Class Tester
Shared array1 As Integer() = New Integer(14) {}
Dim count As Integer
Public Sub Main()
Dim i As Integer
[Code] .....
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Apr 9, 2011
I have a delete method for a binary search tree. It only deletes the last two entered values. When trying to delete the root or anything to left of it it returns a null pointer exception.
PublicFunction Delete(ByVal key AsInteger) AsBoolean Dim current AsNode = root Dim parent AsNode = root Dim isLeftChild AsBoolean = True While (current.value <> key)
parent = current If (key < current.value) Then isLeftChild = True current = current.rightNode Else
[code].....
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Mar 13, 2010
Anyone knows where I can download binary search tree for VB.Net ? I'm working on a small project for my company and I'm thinking of using BST as a sorting tool.I used to do BST using C++ and I was using linked list. I'm not sure if that can be done in VB.Net but is there any other ways? any input and comments are welcome.
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Aug 14, 2011
I want to produce a search that lets me have multiple search results but it only returns one.[code]...
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Apr 28, 2009
I have an array of words that must be sorted alpabetically using selection sort, I must then be able to search the array with a binary search. I just can't get my head around how you would go about doing it. I know that the words must be first sorted into alphabetical order. Here is the code for selection sort with numbers:
Dim pass As Integer
Dim count As Integer
Dim minmax As Integer
Dim temp As Integer
[code]....
How would you apply that to an array of strings?
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Oct 26, 2010
I want to search for a String Pattern in a Binary File (Binary File is not 100% plain text). Here is the pattern:
"**_*_*_*"
or
"111_11_11_112"
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Mar 4, 2011
I have some .doc binary files stored in my database and i would like to now search them all (without converting them to .doc) to see which one contains the word "hello" for instance.
Is there any way to do this search in the binary file?
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Apr 9, 2011
I have a delete method for a binary search tree that only deletes the last two values that were entered in, and when it tries to delete anything to the left of the root or even the root itself it returns a null pointer exception.
Public Function Delete(ByVal key As Integer) As Boolean
Dim current As Node = root
Dim parent As Node = root
Dim isLeftChild As Boolean = True
[Code]...
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Aug 18, 2011
those applications that has a plug-in features. What I meant by plug-in is that the application has a capabilities of integration with 3rd party softwares for enhancements.
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Nov 2, 2009
I have explicitly provided tab stop information, and my form ignores that order at runtime. where i have 1, 2, 3, 4, 5, ... , 13 it goes 6, 1, 2, 8, 3, 4, ...tab stop = true on all of the applicable controls, no labels have tab stop = true...?
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Dec 25, 2009
Couldn't think of a better title.(Background on the problem/me)Okay, so, first question/post here, so hi. Now that that's done with, the information pertinent to my problem. I'm fairly new to VB (and programming as well, aside from screwing around with C++ and learning assembler(well, attempting is the better word) god knows how many years ago), and have only seriously been programming for about under half a year, and my skill level is about at that stage. Only been using VB.Net, nothing older. Depending on the time of day and if I'm home or at school, I fluxuate between VB express and Vis Studio 08. Umm, this program I'm having trouble with was on a test that I took yesterday (took the problem home with me cause I really wanted to figure out what was wrong with it).
The stipulations of the test were:
No For->Each Loops
No using Built-In Sorting or Searching Functions
[code].....
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May 16, 2010
Searching the internet for an example of backtracking in VB.Net has proven fruitless. All the examples I found were either in a language I don't understand (making it impossible for me to convert it to vb.net) or they contained zero commenting (making it difficult to actually understand what is going on).Does anyone have an example of backtracking in VB.Net? Commenting would be useful so I don't have to decipher single letter variables.
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Sep 25, 2010
AFAIK, there're 3 methods to load an assembly into a AppDomain:
Assembly.Load()
Assembly.LoadFrom()
Assembly.LoadFile()
The LoadFrom() method takes the assembly filepath as its argument, but the filepath is merely providing the assembly identity information as a clue to the CLR. The LoadFrom() method still internally calls Load() with that identity information. So it is quite possible that LoadFrom(filepath) will load a totally different assembly from the one specified by the filepath. But the tame LoadFile() method will just load the assembly we specified.
I am wondering why do we need the LoadFrom() method? It adds nothing but confusion and pitfall. Is there any scenario that only LoadFrom() is applicable?
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Jan 28, 2012
C#.Can some one provide me the simplest solution to Shortest Path algorithm (source code) based on VB? I could not find any useful sample on the internet as almost all of them are written in Java or
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Jan 17, 2012
Has anyone ever used VB to analyze data to find patterns? I would like to analyze several hundred sequential data points to look for a fairly uniform "up-down" pattern, very similar to a square wave.
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Jun 8, 2009
I am trying to implement an Algorithm called "Diamond-Square Algorithm" I am having trouble ending it so that it retiurns the required result. So far I have the folloiwng.
[Code]...
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Jul 26, 2010
I am sending some data in a Serialized Structure across a TcpClient Stream to a Client. Now, sometimes the results get through, other times however, it does not. I've noticed this is true when the data I'm sending gets rather large. The server locks up at sending it and can't continue on.I'm sending this structure:
<Serializable()> Public Structure SearchResults
Public Property Results As String
Public Property Search As Boolean
End Structure
When Results gets kind of big (say, 411,000 characters in length), the server fails to send it, I get no error, and I end up timing out completely. If I connect via localhost", I get it instantly, so I know my code works. My problem is I've sent different structures with more data (2 million characters) way faster (nearly instantaneously) across the Internet (not localhost) in less than half a second.
Private Sub SendMessage(ByVal message As Object)
Try
SyncLock m_Client.GetStream
BinFormatter = New Binary.BinaryFormatter()
[code]....
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Feb 27, 2011
How? I am willing to make a text to binary to text converter, but how can i convert text to binary?
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Aug 22, 2011
i want to make a VB code that enters the Binary type data in a subkey with the name as NoEntries and data as some string like 02 00 00 00. I have written a code :
[Code]...
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Dec 30, 2010
how to show all files *.*, from binary file?? in listview or listbox
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Feb 17, 2011
I'm supposed to convert the string in one textbox to binary, and display it as binary, in another textbox. I can make this part work, but when I want to convert it from binary and back to text, it all goes bananas.Here's the code I'm using for the conversion:
Private Sub Button1_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs
) Handles Button1.Click
[code]....
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