Re: Baby X is bor nagain

On 6/18/2024 3:52 PM, Mark Bourne wrote:

DFS wrote:

On 6/18/2024 12:11 PM, David Brown wrote:
>
>

if n % 2 == 1 :
         median = sorted(data)[n // 2]
else :
         median = sum(sorted(data)[(n // 2 - 1) : (n // 2 + 1)]) / 2

>
I think your else formula (n % 2 == 0) is incorrect:
>
n      = 4
data   = [1,2,3,4]
median = 2.5
>
Yours appears to sum (1,2,3) = 6 / 2 = 3.
>
Am I reading it correctly?

 Python ranges include the start index but exclude the end index.  So data[1:3] gives the items at data[1] and data[2], but not data[3]. Indexes are zero-based, so data[1:3] == [2, 3], sum([2, 3]) == 5, and 5 / 2 == 2.5.

I knew python is index-0 based and I've done a lot of string slicing, but I didn't know you could sum a slice.
Thanks.