[Tutor] Calculate hours
Dave Angel
d at davea.name
Wed Jan 23 04:34:07 CET 2013
On 01/22/2013 10:08 PM, Mitya Sirenef wrote:
> On 01/22/2013 09:52 PM, anthonym wrote:
>> Hello All,
> >
> > I originally wrote this program to calculate and print the employee
> > with the most hours worked in a week. I would now like to change this
> > to calculate and print the hours for all 8 employees in ascending
> > order.
> >
> > The employees are named employee 0 - 8
> >
> > Any ideas?
> >
> > Thanks,
> > Tony
> >
> > Code below:
> >
> >
> >
> > # Create table of hours worked
> >
> > matrix = [
> > [2, 4, 3, 4, 5, 8, 8],
> > [7, 3, 4, 3, 3, 4, 4],
> > [3, 3, 4, 3, 3, 2, 2],
> > [9, 3, 4, 7, 3, 4, 1],
> > [3, 5, 4, 3, 6, 3, 8],
> > [3, 4, 4, 6, 3, 4, 4],
> > [3, 7, 4, 8, 3, 8, 4],
> > [6, 3, 5, 9, 2, 7, 9]]
> >
> > maxRow = sum(matrix[0]) # Get sum of the first row in maxRow
> > indexOfMaxRow = 0
> >
> > for row in range(1, len(matrix)):
> > if sum(matrix[row]) > maxRow:
> > maxRow = sum(matrix[row])
> > indexOfMaxRow = row
> >
> > print("Employee 7", indexOfMaxRow, "has worked: ", maxRow, "hours")
>
>
> There is an issue with this program: it omits the first row.
No, it doesn't. The OP fills in item 0 in the initial values for maxRow
and indexOfMaxRow. Then he figures he can skip that row in the loop,
which is correct.
>
> It's better to use enumerate, e.g.:
>
> for n, row in enumerate(matrix): ...
>
>
> To make the change you need, use list comprehension to make sums of all
> rows, sort it (using list sort method); iterate over it using
> enumerate() and print out "employee N, sum of hours:"
>
>
> HTH, -m
>
>
--
DaveA
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