Re: nested lists as arrays

[EMAIL PROTECTED] wrote: Hi, why can't I do this: dummy = self.elements[toy][tox] self.elements[toy][tox] = self.elements[fromy][fromx] self.elements[fromy][fromx] = dummy after initialising my nested list like this: self.elements = [[0 for column

Re: nested lists as arrays

[EMAIL PROTECTED] wrote: Hi, why can't I do this: dummy = self.elements[toy][tox] self.elements[toy][tox] = self.elements[fromy][fromx] self.elements[fromy][fromx] = dummy after initialising my nested list like this: self.elements = [[0 for column in range(dim)] for

Re: nested lists as arrays

Diez B. Roggisch wrote: [EMAIL PROTECTED] wrote: Hi, why can't I do this: dummy = self.elements[toy][tox] self.elements[toy][tox] = self.elements[fromy][fromx] self.elements[fromy][fromx] = dummy after initialising my nested list like this:

Re: nested lists as arrays

naturalborncyborg [EMAIL PROTECTED] wrote: Hi, I'm using nested lists as arrays and having some problems with that approach. In my puzzle class there is a swapelement method which doesn't work out. what happens, and what do you expect? Any help and comments on the code will be appreciated.

Re: nested lists as arrays

naturalborncyborg wrote: Hi, I'm using nested lists as arrays and having some problems with that approach. In my puzzle class there is a swapelement method which doesn't work out. What doesn't work out? On casual inspection that method seems to work: p = Puzzle(2) p.elements[0][0] = 1

Re: nested lists as arrays

Thanks for the code. What I want to do is this: I want to solve the block puzzle problem. The problem is as follows: You have a nxn Array of Numbers and one empty space. Now you there are up to four possible moves: up, right, down and left, so that each neighbour of the empty slot can be moved

Re: nested lists as arrays

Diez B. Roggisch [EMAIL PROTECTED] wrote in message And use xrange instead of range. For small dimensions like 3,4,5, xrange is way overkill and perhaps takes both more space and time. Since dim is a constant for a given puzzle, I would set self._range = range(dim) in __init__() and use

Re: nested lists as arrays

Allright. What difference in runtime and space would it make using dictionaries instead? Do you have a pointer for me concerning runtime of standard manipulations in Pythons? Thanks for tip. -- http://mail.python.org/mailman/listinfo/python-list

Re: nested lists as arrays

Allright. What difference in runtime and space would it make using dictionaries instead? Do you have a pointer for me concerning runtime of standard manipulations in Pythons? Thanks for the tip. -- http://mail.python.org/mailman/listinfo/python-list

Re: nested lists as arrays

[EMAIL PROTECTED] wrote: Allright. What difference in runtime and space would it make using dictionaries instead? is this for an interactive game? if so, the answer is none at all. (on my machine, you can make about 600 dict[x,y] accesses per second, compared to 750 list[x][y]

Re: nested lists as arrays

[EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] def setRandomState(self): # container for the elements to pick from container = [1,2,3,4,5,6,7,8,-1] # create elements of puzzle randomly i = 0 j = 0 while i = self.dim-1: while j

Re: nested lists as arrays

Terry Reedy wrote: [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] def setRandomState(self): # container for the elements to pick from container = [1,2,3,4,5,6,7,8,-1] # create elements of puzzle randomly i = 0 j = 0 while i = self.dim-1: while