.net - Find Common Values In Several Arrays Or Lists
Dec 23, 2011
Find common values in multiple arrays with PHP Pretty much does what I need, but in PHP, I need VB. My situation is I am trying to create an intelligent stock pick system based on multiple stock locations. At the point of invoicing, we loop through the items invoiced and check the stock database for available stock.
If all items on the invoice are available to pick from stock location 1, then all should be picked from stock location 1... etc. If all most items are available from stock location 1 except one or two, then pick all stock from stock location 1 except for the exceptions which should be picked from the location with the highest available stock. Finding highest available stock is simple, but I can't work out how to analyse the stock availability from multiple locations and finding the common stock locations.
[Code]...
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Jan 27, 2011
Suppose I have two list
list1: {1,2,3,5}
list2: {1,2,2,3,3,4}
I want to get the result list3: {1,2,2,3,3,4,5}
notice the final result contains the common parts between two lists.
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Apr 11, 2010
How to find a matching pair of values in two different arrays? Here's the scenario:
Index Array1 Array2
0 1 3
1 2 5
[code].....
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Jun 24, 2011
I have been assigned a program for homework in which I need to take in information about songs from a text file and then be able to sort the list alphabetically, by genre and by length. I also need to be able to filter it by genre. The user can then move songs they choose from the master list to a playlist where again the list can be sorted by either genre or play order.My book only covered sorting array when they are one dimensional however I need to be able to sort a multidimensional array by different columns. I asked my teacher but she had so much going on that we didn't really have time to get into it, so I decided to ask here.
I'm not looking for code, just to get pointed in the right direction. For instance rather than using a multidimensional array would it be better to pull the values in and then put them into an array of song objects with properties for each value? And if I choose to go that route is an array the best structure to use? I have to use an array of some type, but the problem says nothing about whether or not it can be a list or other array type structure.
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May 2, 2012
I declare my 2D lists:
Dim _invoiceitems As New List(Of List(Of String))
Dim _dbitems As New List(Of List(Of String))
Each List is filled like this: Example Code To fill:
_invoiceitems.Add(New List(Of String))
_invoiceitems(0).Add("Code #")
_invoiceitems(0).Add("Quantity")
Well, now i need a third list called (_changesitems) Note that this result with the differences: be the result of subtraction of quantities if this is found (dbitems - invoiceitems).
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Jun 13, 2010
I've had experience with using hashvalues from String objects. E.g., if I have StringA and StringB both equal to "foo", they'll both compute out the same hashvalue, because they're set to equal values. Now what if I have a List, with T being a native data type. If I tried to compute the hashvalue of ListA and ListB, assuming that they'd both be the same size and contain the same information, wouldn't they have equal hashvalues as well?
Assuming as sample dataset of 'byte' with a length of 5
{5,2,0,1,3}
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Nov 11, 2011
I have a pipe delimited file with 3 values on each line, something like this:
0001|234587|Bracket, 3 x 3 x 0.125, Steel
0001|254378|Bracket, 4 x 4 x 0.125, Steel
0003|234587|Hinge, 4 x 4 x 0.125, Brass
The first Value can be duplicated in the file, the second value also can be duplicated. There are no instances of BOTH values duplicated on 2 or more lines. I need to read another file and get the first 2 values, then look up those two on one line to get the proper 3rd value. The "other" file looks a bit like this:
0E0522070001EF54ED7823458700FF00FFA5A5A5A5
-----------XXXX-----------XXXXXX--------------------- (X's are the data, the rest is filler to comply with some code unknown to me)
Right now I have code to read all into an array (split on vbcrlf), then split each line on "|" and populate three arrays, I then go thru every element of the first column that matches the value I am looking for and test that the second column also matches the second value and if so, return the third array contents at the same index. This seems crude and inefficient. Cannot use a hashtable (I don't think) as it only supports 2 values. A List(Of) doesn't seem to work either and I don't want to use a database.
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Mar 17, 2010
I was wondering how you create a form with three lists. Each list representing a different array.
I guess the question is how do you take an array and make it into a list so it shows up on a list box?
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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 27, 2011
Basically what I'm having to do is create a program that takes a list of CaseIDs and compares them to a table on a remote SQL server. However, the table holding the CaseIDs on the remote server has nearly 120,000 records.
Currently my plan is to query all records on the remote server, save the query and the current list to tables in an Access DB file and then run an outer join to see which CaseIDs have no matching records on the remote server.
I believe this will be a much slower process than I would like. If I could load both queries into arrays or lists in VB and then compare them (therefore, not having to write 120,000 records to a DB file), it would be much faster.
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Mar 2, 2010
Ever since I started using VB.Net I have been using the Generic List collection List(Of <Type>). Arrays, I haven't used so much. I used them a lot more when I wrote C code years ago.
1.) Are arrays considered a type of collection like Lists, Dictionary, Queue etc are? Or are they in their own category.
2.) Can I iterate over an array with a For Each loop like I can with other collections or do I stick with the normal For loop for arrays?
3.) There are certain methods that return arrays. Can I set a list object to hold this return value instead of an array?
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Jun 27, 2012
I'd like to give a homework assignment to a person learning VB.NET. I'd like it to use basic inheritance and a variety of data structures including queues, lists, arrays, or stacks in a windows forms application. I was thinking of a pizza-ordering application. This would allow them to utilize some basic inheritance and practice using .NET UI elements.
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Aug 31, 2011
I have hundreds of variables and need to see if they are duplicated. Is there a simple function I can use to achieve this rather than repeating the code for each? The variables have different types. Can you pass a variable name into a subroutine?
[Code]...
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Jun 28, 2010
This question is very similar to a previous question of mine, Use LINQ to count the number of combinations existing in two lists, except with some further twists.
I have a list of CartItems that can receive a discount based on the items specified in the list of DiscountItems. I need to be able to pull out the items in the Cart that can receive a discount and apply the appropriate discount specfied in the DiscountItem. The discount is only applied for each combination that exists. Here's what the two lists might look like to before the discount is applied[code]...
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Sep 19, 2010
I accept both C# and VB.NET suggestion, even though I'm writing an app in VB.NET I have two lists of intergers
List1 {1,2,3,5}
List2 {2,4,6,7}
I want to have new List3 {4,6,7} which is composed of elements of List2 that are not in List1. I know I can write a nice For Each loop for this but I want it done in LINQ I've been looking for such methods at Enumerable Methods, but I can't find it.
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Apr 15, 2009
I've written a program to work out the flight distance between a set of seven cities around the world using a 2D array but was wondering how I would if possible go about having the values for each city selected via two drop down lists (say start city and destination city).
Public Class frmDistance
Private Sub Flightdist_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim rowcolumn(7, 7) As Integer
Dim sr As IO.StreamReader = IO.File.OpenText("Distance1.Txt")
[code]....
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Oct 5, 2011
I have two list boxes. A users selects a value from each, clicks a button and the application creates a relationship between the two selected items by saving them in an array and displaying the relationship in a third list box.
What I want to allow is for users to be able to drag a value from one list box and drop it on top of another value. I have the code to capture the value of the item dragged but I don't see how to capture the item that the data is dropped onto.
Is there a way to capture the targeted selected item?
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Dec 27, 2009
I wish to read a web page that had various frames and div elements.To start with I would like to create a routine that justs lists all of those elements values and then display each element name and its value so I know what I have and how to reference it later on.I have been using the WebBrowser control and have managed to do a few basic things so far like go to a website and auto login.
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Nov 22, 2010
I am getting the following error when i try to publish my application with the checkbox for ClickOnce Security On. Could not find file 'Microsoft.Windows.Common-Controls, Version=6.0.0.0, Culture=*, PublicKeyToken=6595b64144ccf1df, ProcessorArchitecture=*, _ Type=win32'. [projectname ]
[Code]...
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Feb 8, 2009
I am tring to find the Average Temp for the days entered,and I am not sure how to do this.Here is the code I have so far:
Public Class Form1
Dim Temp(6) As Single
[code].....
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Jul 14, 2009
I am using Visual Basic express edition 2008.I am trying to know if a value in a single dimensional array is repeated in the array. If yes, then multiply one of them by 100. For example:
MyArray (14) = 12, 15, 18, 15, 18, 11, 15, 18, 16, 14, 18, 8, 12, 17, 10
In the above example:
MyArray (1) = MyArray (3) = MyArray (6) = 15
MyArray (2) = MyArray (4) = MyArray (7) = MyArray (10) = 18
MyArray (0) = MyArray (12) = 12
[Code]...
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Jul 15, 2011
I have a two different tables, Table 1 and table 2.
Table 1
-----------
Resource
Start Date
End date
[Code]....
Here I have to match the total hours of each table according to the resource,
then have to find the mismatched data and find difference with that values of mismatched data.
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Dec 23, 2009
This is my problem: I have an array with dates in it and I want a list with the dates and how much that date is sequel to the amount of that dates in the array.
This is my code so far:
arrsVerschillendeDagen(iTellerke) is declared on moduleniveau
arriMaand(iTellerke) is declared on moduleniveau
arriJaar(iTellerke) is declared on moduleniveau
I have a subroutine too that redimension my arrays.
Private Sub FillArray()
For iCounter As Integer = 0 To arriDag.Length - 1
arrsVerschillendeDagen(iCounter) = arriDag(iCounter) & "/" & arriMaand(iCounter) & "/" & arriJaar(iCounter)
Next
'result: 14/10/2009, 20/12/2009, 20/12/2009, 14/12/2009, 14/12/2009, 14/12/2009
[Code] .....
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Apr 26, 2012
I'm making an application in school where I have to display the values of domestic, international, and total sales of company "Conway Enterprises." Everything seems to be working except it is not displaying the totalCompany sales as a currency. I'm sure it's probably an easy fix but I've been searching the internet and re-reading my book for awhile with no results. Below is the code, as I said everything seems to be working fine aside from adding the two array values and then displaying them as currency.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
[code]....
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Sep 28, 2011
I have a program in VB.net that uses a 3D array:
Private gridList(10, 900, 900) As GridElement
Now, I just used a Memory Profiler on it (because my application is having some major leak issues or something) and apparently, this array (containing at the moment of testing 0-30 elements at one time) is using 94% of the memory currently in use by my application. Even when it is empty it takes up huge amounts of memory.
My only assumption is that even empty arrays take up space! This puts a major blow into my plans!
My Question:
Is there any alternative to this that allows me to still have the same abilities to map i.g. I've been using it like this:
Dim cGE as GridElement = gridList(3, 5, 7)
but doesn't hog up so much memory for things that aren't using memory?
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Sep 27, 2011
I'm using a structure to hold three arrays:
structure myStruct
dim arrayOne() as char
dim arrayTwo() as char
dim arrayThree() as char
end structure
But how do I go about setting them a value, I've got my instance of myStruct
dim aStruct as new myStruct()
If I try redim, it just tells me it can't change the dimensions of an array, so how do I got about initializing the arrays with values?
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Oct 22, 2009
I have two arrays with equals number of values, is there a way to match the values exactly in same order, as such:
FirstArray("1,"2","3","4")
SecondArray("John","Samantha","Tony","Joe")
1---John
[Code].....
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Sep 25, 2010
I am working on a program where I need to multiply the value (int) times the value (dec) of another array to calculate the total cost of books in inventory. [code]....
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Mar 4, 2010
i am working on a VB project for Chem and im making it for converting grams to moles, moles to molecules or any thing like that. and i have about 110 elements set up and working fine the way that im doing it but i have a feeling this is a horrible way and to abundant.
i have a textbox set up to if i type in the element He and hit enter it will find ChemElement(1)="He" and it calls "Sub DisplayElement(ByVal number As Decimal, ByRef label2 As Label)"
Which then displays the Chemical mass into a Label.
[Code]...
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Jun 3, 2011
im a newbie here, im taking intro to programming wth VB in college and im having problem with the homework here's what im supposed to do
[Code]...
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