Recent content by azerty12

Hi I'm trying to program a merge sort algorithm on python but it just doesn't work! I first implemented a fusion algorithm which takes as arguments a list A divided into 2 sorted sub lists A[p..q] and A[q+1..r]. Fusion then returns the list A completely sorted. This program seems to work...

I think I'm gone pay myself snacks then ! ;)

Hi, I'm studying algorithmic on "Introduction to algorithms" by Cormen, Rivest, Stein and Leiserson. This book is very well done and proposes more than a thousand exercises, but the point is these exercises are not corrected. It enables us to really search them, but it is frustrating when you...

sorry for the delay I had no internet access for a while thank you for your help jhae2.718, it looks like this was the problem indeed!

Absolutely Mark, you got it! Thanks a lot and thanks to jihae and radou

I get type list

A and B are nested lists indeed. They look like A=[[1,2,3],[2,3,4],[2,2,3]] for instance. But what amazes me is that when I try to work with A[0][0] in the python shell, then there is absolutely no problem whereas with my program (with IDLE) an error is raised...

I tried to and actually each of the objects I try to assign exist...

Hi all! I'm learning programming on Python. Currently, I'm trying to implement a recursive algorithm using a divide and conquer method to compute a product of matrices. Yet an error occurs when I try to assign an element in a list (representing a matrix) I can't understand where the problem...

Yes I did notice the line you added. But it still raises the same kind of exception. Do you mean that instead of printing things like "wrong number"... I should return these?

Thank you emgram769: In fact that's almost what I tried to do but I took the second integral with -theta instead of 0 (and we should take 0 because phi is integrated over 2Pi)

Hi everyone I'd like to compute the solide angle defined by a cone whose angle θ is known. I tried with the definition but I probably mistook since it lead me to compute an integral worth...0. I then tried with a rule of three, but the result I get is clearly wrong too. Could you...

I'm afraid the first way doesn't work, it generates the following exception: UnboundLocalError: local variable 'col' referenced before assignment About your second suggestion: Could you tell me how to exit the function please? (I just begging in programming)

Hi Radou Here's my program (edited with IDLE) The problem occurs when I execute Roulette() on python's shell and when I choose 'No' when he asks me whether I want to play I didn't put much comments on my program, so if there is something you don't understand, just ask. Since I can't...

Hi guys I'm trying to program a Roulette game on Python My programs asks for inputs and I gave names to these inputs. The point is, since I didn't assign these names before, the following error occurs: UnboundLocalError: local variable 'color' referenced before assignment I tried to get...