I'm trying to work out with visual basic. I need to calculate the probability of having a certain sum when randomly choosing 5 of 36 possible numbers. I already know all of the 36 possible numbers, and I know what the total number of possibilities is, I just need to write some code that will list all of the possible sums for me when you add any five of those thirty six numbers together. Ideally I would be able to also have it count how many of a certain sum occurred, but even if I could just have them as a list and I just count the instances, that would be fine too.
I would like to be able to add every combination of a list of numbers to determine which combinations equal a specific result.
Simple Example:
List: 2, 4, 6 Result: 10
How many and which combinations of numbers result in the number 10? The correct anwser is only one which is 4 + 6 = 10. The example is simple but the actual list may contain as many as 10 - 15 decimal numbers.
I have thought of the following as a possible way of checking each combination by using binary:
- There are 3 total number so the possible combinations would be: 123 - Three numbers 000 - Add no numbers 001 - Add the last number
[Code].....
However, I don't know how to actually match up the bitwise bits to the numbers in the array to actually add. Example:
101 - I should check if 2 + 6 != 10 per the example above so this wouldn't satisfy the result... does this make sense? The answer would be 4 + 6 = 10.
how to check and add all combinations from a list of numbers to determine if the result is a specific number?
I have the following code to generate combinations of string for a small list and would like to adapt this for a large list of over 300 string words.Can anyone suggest how to alter this code or to use a different method.
I have the following code to generate combinations of string for a small list and would like to adapt this for a large list of over 300 string words.Can anyone suggest how to alter this code or to use a different method
This program is supposed to allow a sales manger to enter the company's income and expense amounts and you should be able to continuously enter amounts and they will keep adding to totals. It should also display total income, total expenses and profit of loss on my form I have a:
please help i am trying to write a code that can do sums on a variable in small basic and this is what i can come up with so now:If (age=age * "2") Then age is the variable and i am trying to make it the variable x2.eg if the value of "age "(the variable ) is two then i am trying to make it 2x2=4 please tell me if you need aditional information.thx.
I'm trying to produce every possible combination of the letters in a word, however I've been very unsuccessful at figuring this out. I can't seem to grasp what I need to do to get this working, I've been at it for the last four hours or so.for example, the word "one" would produce: one, oen, eon, eno, noe, neo.
I want to create a random number with the combination of the text entered in textbox. Suppose the textbox contains bharani. So now the random number generation is the first 3 letters from textbox and the random number from 1 to 1000. So my output must be "bha876"
I was wondering how to forbid to the user to press the combination of Alt+F4? or atleast if user presses Alt then MsgBox("...") so that the combination ruins...?
I'm working on a program and in it I need to store all combination's of the numbers 1,2,3,4. I would like each combination to be it's own array, and instead of creating 24 different arrays (there are 24 different combinations 1,2,3 and 4 can be arranged) I was wondering if it's possible to create a nested array like so:
That way, I'd be able to reference index 2 of the above array and have the array [1,3,4,2] returned.I looked into multidimensional arrays, but this would require me calling each index of the row and column.I also looked into making a Structure in which there was an array that could hold 4 numbers, but wasn't sure if going that method would be practical or not.
Im pretty use to doing loops (although still relative new to vb) in my code however am having difficulty setting up one that picks up an entry in one data table and then sums a field in another where records have matching criteria. Example:
[Code]...
What i am trying to do is set up a datagridview on a form that shows the summary data. The time is controlled on the form by a trackbar (output to textbox) and I started setting up a loop using (For/Next) to isolate firstly the matching entries in field 3 (time). This works fine. I then used compute to sum the the field 2. However what i want to do is to loop through table 2 and where entries match i.e. where Field 1 in table 2="A" sum matching entries in table 1 where the DateTime matches.
Dim classes() as String = {"FR%", "SO", "JR", "SR", "SR5"}
I need to loop through these values like so:
For Each value as String in classes Next
Problem is, I have a If..Then..Else clause inside of this For Each..Next which says something to the effect of:
If actual_class = value Then txt.Text = "Welcome" Else txt.Text = "Goodbye"
When I run this, unless the individual is the last value in the string array ("SR5") they are going to get the message "Goodbye"...so, I need somehow to both iterate through each value like is done with a For Each..Next loop but also break out of the loop once it hits the student's class, like a Do..While loop - so that their value doesn't get overrun by the Else clause.
How to handle event when I press Alt+X in combination?. I am coding VB.Net in my Windows App and I want to run some routine when user presses this combination but I am unable to handle both keys. Event fires for single key and not for combination of both keys.
Im having some trouble creating this, What im after is like a database, and im sure its got something to do with it, Ive looked all over, but nothing gives me exactly what i want, Basically what do I do when, I have 9 Options, Example, Blue Black Red Green etc...Up to 9 In 3 boxes, now what im after is a shorter way for me to put, example:
CODE:
Then with not much code have it so it works with all 9 colours and gives an answer
This is what I'm sure will be the first of many noob-ish questions from yours truly... I'm studying as a mature student for a Computing Degree (encompassing web design, hardware, programming and systems analysis). The programming seems to be my weak spot this year. I enjoyed C++ last year, doing basic console applications, but progamming visually with VB in Visual Studio 2008 I'm struggling!
I think (?) this is about object design, and perhaps about structural and/or creational patterns. But a bit hard to say when I only know a couple of patterns yet.[code]But... what if we INSTEAD want each Product instance only to (in some way) refer to one instance of a specific list of Components. So we wan't to save the products list to one file, and the components list to another file. Then would I build the objects the same way, or different? So let's then say we have now Class B as below. [code]
1. Will not need to update each component variable of the products list when the components list changes.
2. If the Product object shall be shown in a DataGridView, for editing properties, it seems easier to implement the selection of the component property.
Is this wrong approach? Is it suitable in some cases, and if so, when? Are there other solutions I perhaps am not aware of that would be appropriate? Is this about structural design patterns? and if so, can the alternatives above be catagorized to some pattern type? I don't really know exactly what I'm looking for.. But I think probably I'm looking to understand whether the object design will be determined by the way the objects are saved.. And if i shall save the objects by serializing to file, vs saving to a database, would I create the business objects differently?
I have a small problem i'm trying to fetch list of directoies from 1 special ftp server wich does not support LIST command i was try this code and it works for all ftp server i have try exept this special one :
'' Get the object used to communicate with the server. 'Dim request As FtpWebRequest = DirectCast(WebRequest.Create("ftp://" & txtFTPhost.Text), FtpWebRequest)
[code]...
I'm getting error 502 which means command is not supported and app crashed. I would just simple said leave it but i have try normal ftp clients like FlashFXp and it works just fine (i can see error in the log but it just pass it and show direcoties)
I'm looking for some function to put together every possible combination of letters and number to create a string that is 14 characters long. I have found ways to make every possible combination of letters and numbers seperately. However, I've never run across anything to come up with them together. Every string created must contain letters and numbers.I just have no idea where to start on this one.
I would like to generate a combination of words. For example if I had the following list:
{cat, dog, horse, ape, hen, mouse} then the result would be n(n-1)/2 cat dog horse ape hen mouse (cat dog) (dog horse) (horse ape) (ape hen) (hen mouse) (cat dog horse) (dog horse ape) (horse ape hen) etc
i would like to know that is there any way to activate a button with the Ctl and a key combination we can do it with Alt and the key combination but my client is asking for ctrl & the key combination i have searched a lot but failed to find anything.
secondly : i have used the alt & key combination for my buttons but the prob. is unless and untill the user presses the alt key the key combination is not highlighted. i have seen progs. where the key that is used for e.g. i have given &Add then the 'A' key is highlighted always with the underline. but when i am doing it by giving the name as &Add unless and untill the user presses alt the underline under A doesnt appear. do i have do more than just giving "&Add".
I'm trying to capture two key presses in my VB.net application, for this example CTRL + B, the code below doesn't work but it does for single keys. I have tried setting keypreview as true but this has no effect. [Code]
In Visual Studio 2008 (windows forms), how can I map a combination of keys (i.e. Ctrl+F) from a form when running the application? Of course I use the keypress event to map individual keys but I haven't done it before for a combination of keys?
