Positive partial sums X54583
The partial sums of a list of integers v are:
v[0] v[0]+v[1] v[0]+v[1]+v[2] ... v[0]+v[1]+v[2]+...+v[len(v)-1]
Design a function @sumes_parcials_pos(v)@ that, given a list of integers v, returns the list containing the positive partial sums of the list v, that is, those that are greater than zero.
For example, if v is [0, 3, -4, -5, 7], then the partial sums are
0 0+3 == 3 0+3+(-4) == -1 0+3+(-4)+(-5) == -6 0+3+(-4)+(-5)+7 == 1
and, therefore, the list with the two positive partial sums must be returned
[3, 1] == [0+3, 0+3+(-4)+(-5)+7]
DON’T use the Python function sum(v[i:j]).
Sample session
>>> sumes_parcials_pos([6, 3, -2, -5, 7]) [6, 9, 7, 2, 9] >>> sumes_parcials_pos([0, 3, -4, -5, 7]) [3, 1] >>> sumes_parcials_pos([]) [] >>> sumes_parcials_pos([0, -1, -4, -2]) []