Simple Moving Average Endpoint

Problem

Compute the simple moving average of the last k observations in a series, that is, the mean of series[-k:].

Return 0.0 when k is not positive or when k exceeds the length of the series.

Hint

Only the tail of the series participates in the average.

case 1

in: [[1,2,3,4,5],3]

expected: 4

case 2

in: [[10,20],1]

expected: 20

case 3

in: [[1,2],5]

expected: 0

case 4

in: [[],2]

expected: 0

Starter codePython

def sma_endpoint(series, k):
    # Your code here
    pass

4 test cases · run your code against them in the editor