Polyak Window Average

Problem

Average only the most recent parameter values.

Return the arithmetic mean of the last min(k, len(values)) entries. An empty list or a non-positive window returns 0.0.

Hint

Slicing from the end keeps the newest values and drops the oldest.

case 1

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

expected: 3.5

case 2

in: [[1,2],5]

expected: 1.5

case 3

in: [[],3]

expected: 0

case 4

in: [[5],0]

expected: 0

Starter codePython

def polyak_window_average(values, k):
    # Your code here
    pass

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