EPTThe Big Programming Thread - Page 152
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Thread Rules 1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution. 2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20) 3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible. 4. Use [code] tags to format code blocks. | ||
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iamke55
United States2806 Posts
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DumJumJmyWum
United States75 Posts
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SiPa
Germany129 Posts
 Questions, questions, questions... + Show Spoiler + I got a matrix in an excel-file. I want to write that matrix into a 2D-array in VisualBasic (or C, C++, C#, preferred VB) If the matrix is completely filled (no empty spaces in between 2 Values) --> np If the matrix has "holes" in it, im kinda lost...how do I figure out the last value in a matrix? (at the bottom right; bottom before right) Is there a function in Excel? (i'm pretty sure i could use that with VB) Is there an algorithm? ^^ (dont think so) No matrix-lenght or width specified. Do Excel files "end"? (xlsx, xls) --> I use Imports Excel = Microsoft.Office.Interop.Excel ... Dim ExcelApp As Excel.Application Dim ExcelWkBook As Excel.Workbook Dim ExcelWkSheet As Excel.Worksheet ExcelApp = New Microsoft.Office.Interop.Excel.Application ExcelWkBook = ExcelApp.Workbooks.Open(filename) ExcelWkSheet = ExcelWkBook.Worksheets(worksheet) ... matrix(i, j) = ExcelWkSheet.Cells(i, j).value with 2 loops around the last line to fill it up. Could I just read to the "end" of the file? Ok I kinda found a way: NullReference-Exceptions. But since i open the File with Excel, the Rows and Columns never stop. Fuuuuuudamn I cant think of an elegant way... Guess i will have the user put the dimensions of the matrix :S | ||
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Spidinko
Slovakia1174 Posts
Could anyone give me some ideas? I'm running out of time and have no clue what I'm going to do yet. | ||
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GhostLink
United States450 Posts
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supereddie
Netherlands151 Posts
On July 30 2012 21:50 SiPa wrote: Hey Guys, it's me again! I'm sure you missed me Questions, questions, questions... + Show Spoiler + I got a matrix in an excel-file. I want to write that matrix into a 2D-array in VisualBasic (or C, C++, C#, preferred VB) If the matrix is completely filled (no empty spaces in between 2 Values) --> np If the matrix has "holes" in it, im kinda lost...how do I figure out the last value in a matrix? (at the bottom right; bottom before right) Is there a function in Excel? (i'm pretty sure i could use that with VB) Is there an algorithm? ^^ (dont think so) No matrix-lenght or width specified. Do Excel files "end"? (xlsx, xls) --> I use Imports Excel = Microsoft.Office.Interop.Excel ... Dim ExcelApp As Excel.Application Dim ExcelWkBook As Excel.Workbook Dim ExcelWkSheet As Excel.Worksheet ExcelApp = New Microsoft.Office.Interop.Excel.Application ExcelWkBook = ExcelApp.Workbooks.Open(filename) ExcelWkSheet = ExcelWkBook.Worksheets(worksheet) ... matrix(i, j) = ExcelWkSheet.Cells(i, j).value with 2 loops around the last line to fill it up. Could I just read to the "end" of the file? Ok I kinda found a way: NullReference-Exceptions. But since i open the File with Excel, the Rows and Columns never stop. Fuuuuuudamn I cant think of an elegant way... Guess i will have the user put the dimensions of the matrix :S If it is a named matrix, you can use that to select everything and then iterate the selection. | ||
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CecilSunkure
United States2829 Posts
On July 30 2012 22:50 GhostLink wrote: How do i write a python code for combining one picture with another, manipulating it by pixels, i.e. if i wanted to shade a picture grey at it's corners. I'm just starting out and a complete noob, so i'd appreciate anyone who can point me in the right direction. You'd need to use a library for file manipulation or look up the file data format so you can modify bits of the file by hand. | ||
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ranshaked
United States870 Posts
![[image loading]](http://i.imgur.com/6GCov.jpg) Unfortunately, I still do not understand how to do the assignment, and it's bothering me quite a lot. I've been given a skeleton of code, and I need to design the functions to complete it. It's in C. It's rather long, but if someone can help me in a PM that would be great. I don't want to provide the code on here just in case future students will find it and cheat. As of right now I have half of the program working, but I need help understanding return values, and exactly what I can put in functions to help it work. It would be greatly appreciated. Thank you all. EDIT: Can you see the image now? | ||
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woozie
Sweden53 Posts
On August 01 2012 09:15 ranshaked wrote: Hey guys, I had an assignment due the other day (passed due date as you can see here: )Unfortunately, I still do not understand how to do the assignment, and it's bothering me quite a lot. I've been given a skeleton of code, and I need to design the functions to complete it. It's in C. It's rather long, but if someone can help me in a PM that would be great. I don't want to provide the code on here just in case future students will find it and cheat. As of right now I have half of the program working, but I need help understanding return values, and exactly what I can put in functions to help it work. It would be greatly appreciated. Thank you all. Could you at least give out the information in the pdf file, so that someone might actually know what you're supposed to do ...? | ||
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frogmelter
United States971 Posts
On August 01 2012 09:15 ranshaked wrote: Hey guys, I had an assignment due the other day (passed due date as you can see here: )Unfortunately, I still do not understand how to do the assignment, and it's bothering me quite a lot. I've been given a skeleton of code, and I need to design the functions to complete it. It's in C. It's rather long, but if someone can help me in a PM that would be great. I don't want to provide the code on here just in case future students will find it and cheat. As of right now I have half of the program working, but I need help understanding return values, and exactly what I can put in functions to help it work. It would be greatly appreciated. Thank you all. I sent a PM. Waiting for a response... | ||
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ranshaked
United States870 Posts
On August 01 2012 09:24 woozie wrote: Could you at least give out the information in the pdf file, so that someone might actually know what you're supposed to do ...? Yeah I can. + Show Spoiler + Objectives 1. To learn how to use functions for modular programming Problem: Tic Tac Toe (tictactoe.c) The game of Tic Tac Toe is an excellent example of how large problems can be broken down into solvable portions. During our lecture on 2D arrays we talked about the major tasks associated with Tic Tac Toe: Checking to see if the game board is full Getting a user’s move Checking that the move is valid Placing the move on the board Checking to see if there is a winner In this assignment, you will be completing these tasks. A skeleton program has already been written for you. Main is completed and the function prototypes are established – do not change these. Fill in the function based on the instructions provided in the skeleton. | ||
tofucake
Hyrule19215 Posts
But A) the OP clearly states I'll smack you and 2. we can't see those attachments so your post is a waste. You basically asked "hey guys here's this thing how do I do it?" but you never explained what the thing is. | ||
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Abductedonut
United States324 Posts
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ranshaked
United States870 Posts
On August 01 2012 09:39 Abductedonut wrote: I can help you ranshaked. Send me a PM! Thanks! PM sent. | ||
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woozie
Sweden53 Posts
On August 01 2012 09:27 ranshaked wrote: Yeah I can. + Show Spoiler + Objectives 1. To learn how to use functions for modular programming Problem: Tic Tac Toe (tictactoe.c) The game of Tic Tac Toe is an excellent example of how large problems can be broken down into solvable portions. During our lecture on 2D arrays we talked about the major tasks associated with Tic Tac Toe: Checking to see if the game board is full Getting a user’s move Checking that the move is valid Placing the move on the board Checking to see if there is a winner In this assignment, you will be completing these tasks. A skeleton program has already been written for you. Main is completed and the function prototypes are established – do not change these. Fill in the function based on the instructions provided in the skeleton. Right. For me that doesn't seem too difficult. Was there any task in particular that you had a problem with? Also, please explain what you've done thus far. | ||
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SiPa
Germany129 Posts
Matrix looks like this (example): 1 2 5 1 6 2 5 7,3 5,7 1 2,3 9 8,5 1 2 So the numbers are seperated by empty spaces and some are rational(with , or . ), some are natural. Suggestions? ^^ Maybe a string for each line, then a string for each number and then CDbl? And then put those into an array? Do all at once? Use an easy function provided by system.io? ^^ Appreciate any help i can get! | ||
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artynko
Slovakia86 Posts
On July 30 2012 07:35 DumJumJmyWum wrote: Hey guys, I was thinking about using Google Web Toolkit with Google App Engine to build something similar to memrise. Originally I was just going to use GAE by itself + Java framework, but saw GWT. Anyone have any experience with GWT? We use GWT at work and it all depends on the size of the application you plan to do. GWT gets exponencialy worse as you add in extra functionality and some of the js calls take huge ammounts of time to complete. If you just need a simple page with a little dynamic content then it would work fine, anything that is borderline on the enterprise sized app will work very poorly. On the other hand if you want something small then you could probably use Scala + LIFT or even PHP (shoot me) and save a ton of time spent on getting all the backend stuff working (or use Roo). | ||
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Tobberoth
Sweden6375 Posts
On August 01 2012 19:56 SiPa wrote: Hey, I wanna read a Matrix out of a .txt-file using Visual basic and the Library System.IO into a 2-dimensional Array. Matrix looks like this (example): 1 2 5 1 6 2 5 7,3 5,7 1 2,3 9 8,5 1 2 So the numbers are seperated by empty spaces and some are rational(with , or . ), some are natural. Suggestions? ^^ Maybe a string for each line, then a string for each number and then CDbl? And then put those into an array? Do all at once? Use an easy function provided by system.io? ^^ Appreciate any help i can get! Easiest way is probably to read it one string at a time, use Split to get an array of strings and then place those arrays one at a time into an array of arrays, your 2d array. Do you really need to save the numbers as doubles rather than strings? I think it could be problematic since there's both , and . used. If you do, you would obviously need to loop your arrays once to convert them. | ||
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SRBNikola
Serbia191 Posts
On August 01 2012 19:56 SiPa wrote: Hey, I wanna read a Matrix out of a .txt-file using Visual basic and the Library System.IO into a 2-dimensional Array. Matrix looks like this (example): 1 2 5 1 6 2 5 7,3 5,7 1 2,3 9 8,5 1 2 So the numbers are seperated by empty spaces and some are rational(with , or . ), some are natural. Suggestions? ^^ Maybe a string for each line, then a string for each number and then CDbl? And then put those into an array? Do all at once? Use an easy function provided by system.io? ^^ Appreciate any help i can get! Hey, there are 2 ways to do it .Net(maybe more but i know 2 good ways), first way is Regular Expression that i dont think is economic for this, however there is string splitting, basicly you read line and then split string by white space, you will get array of values for each line. You use String.Split(' ') (this is C#, i forgot VB syntax xD but should be something like Sring.Split...) it will return an array of values, u can check length of it and so on. This might help you http://msdn.microsoft.com/en-us/library/system.string.split.aspx Tell me if you are having problems! | ||
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SiPa
Germany129 Posts
On August 01 2012 20:11 Tobberoth wrote: + Show Spoiler + On August 01 2012 19:56 SiPa wrote: Hey, I wanna read a Matrix out of a .txt-file using Visual basic and the Library System.IO into a 2-dimensional Array. Matrix looks like this (example): 1 2 5 1 6 2 5 7,3 5,7 1 2,3 9 8,5 1 2 So the numbers are seperated by empty spaces and some are rational(with , or . ), some are natural. Suggestions? ^^ Maybe a string for each line, then a string for each number and then CDbl? And then put those into an array? Do all at once? Use an easy function provided by system.io? ^^ Appreciate any help i can get! Easiest way is probably to read it one string at a time, use Split to get an array of strings and then place those arrays one at a time into an array of arrays, your 2d array. Do you really need to save the numbers as doubles rather than strings? I think it could be problematic since there's both , and . used. If you do, you would obviously need to loop your arrays once to convert them. CDbl casts both, 6,5 and 6.5, into the same value: 6.5 Edit: Nvm, i guess the last post pretty much explained it Well, ill try it, lets see... | ||
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