Visual Basic

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I have a project that is due tomorrow @ 11:59P.M. I have a 4X4 board, broken down into four regions, each button is allowed to have a number from one to four. A button can not have a duplicate number in it's row column or region. This criteria must be met to generate a valid board. I was able to generate the random number for each of the sixteen buttons, but I am unable to find a way to check the buttons against each other. I tried to use IF THEN statements and a DO LOOP and it still does not work. If anyone can give me some directions or helpful tips it will be greatly appreciated.

 

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The reason why it's not working is because you haven't told your program what is a 'row' and what is a 'column'. Conditionals are there to confirm that a state is valid, which is not the same as an implementation of the state - so that's where your program falls apart.

I'm not a VB guru in the slightest, so hopefully someone who is can give you an idea of the implementation for what I have described above.

Good luck!

 

Well thats because you need to design an algorithm, you could try a brute force or monte carlo type algorithm. A better approach would be to find constraints that limit the problem space.

A gird can be implemented using a multidimensional array. You then prob want some functions like, check row and check column and check region. You'd probably be better off using a semi inteligent placing algorithm rather than placing the numbers randomly. As the grid fills up the problem space diminishes...

For more on algorithms look at Robert Sedgewick his stuffs a bit more accessible than Donald Knuths.

 

I'd agree with dmarsh - building the board while checking would seem a better way than placing the buttons randomly then trying to adjust them.

If I understand the requirements correctly then the 'unique in block' requirement degenerates to checking the opposite corner of the block.

Harry.

 

Hi there and welcome

 

Hadn't noticed that this was a first post!

So welcome to CF from me as well!

Harry.

 

Hi & welcome to CF

NB

 

Hi and welcome to the forum.

 

how did you get on with your assignment?

 

Welcome to CF!