python function to find sum of positive numbers in an array
arrays, python, sum
Solution
Use super functions and list comprehension instead:
>>> a = [1, 2, 3, -4, 5, -3, 7, 8, 9, 6, 4, -7]
>>> sum(x for x in a if x > 0)
45
`[x for x in a if x > 0]` will create an array made of the positive values in `a`.
`sum(...)` will return the sum of the elements in that array.
Problem
i need to write a function that takes an array of numbers and finds the maximum sum of all the numbers. In other words, I need to find the sum of just the positive numbers. I wrote this, I'm getting "list is out of range" thoughts? ``` def maximum_sub(A): x = 0 i = 0 for i in A: while A[i] > 0: x+=A[i] i+=1 return x ```