recursive cumulative sums
- by user1816377
I need to write a program that compute cumulative sums from a list of numbers with def but ONLY with recursion.
I did it, but now I need to write the same program without using the method sum, but no success so far.
Any idea?
my code:
def rec_cumsum(numbers):
''' Input: numbers - a list of numbers,
Output: a list of cumulative sums of the numbers'''
if len(numbers)==0: return numbers
return rec_cumsum(numbers[:-1])+ [sum(numbers)]
input:
1 [1,2,3]
2 [2, 2, 2, 3]
output:
1 [1,3,6]
2 [2, 4, 6, 9]
