[Tutor] Help me with two dimensional arrays in Python

[Asrarahmed Kadri]

Thank you so much.
I am trying to implement. I hope I can do it.

A gentle note: This is not a homework question.
I am learning python as a part of my Project work.



On 10/5/06, Luke Paireepinart <rabidpoobear at gmail.com> wrote:
>
> Asrarahmed Kadri wrote:
> > Its something very close.
> > What I want is:
> >
> > 1
> > 1 1
> > 1 2 1
> > 1 3 3 1
> > 1 4 6 4 1
> >
> > This can be done using arrays, right or is there any other way??
> They're not arrays, they're lists!
> arrays imply contiguous memory blocks and single data types.
> Lists are neither of these.
> > My logic in C is:
> >
> > int arr[5][5];
> > for (i=0;i<5;i++)
> > {
> >    flag = 0;
> >    for (j=0;j<=i;j++)
> > {
> >    if (flag == 0 || j == i)  // print 1 if the array element is the
> > first or the last number
> >      {
> >       arr[i][j] = 1;
> >       flag = 1;
> >     }
> >   arr[i][j] = arr[i-1][j-1] + arr[i-1][j];
> > }
> Yes, you could do this in Python.
> I'm guessing it'd be something like this:
>
> lst = []
> for x in range(5):
>    tmp = []
>    for y in range(x):
>       if y == 0:
>          tmp.append(1)
>       else:
>          tmp.append(tmp[y-1]) #this line would be different
>    lst.append(tmp)
>
> That's the best I can do.
>
> HTH,
> -Luke
>



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