DPCM Step

Problem

Return the differential pulse-code modulation residual for one sample: the difference between the sample x and its prediction.

Hint

A perfect prediction produces a zero residual.

case 1

in: [0.5,0.7]

expected: 0.19999999999999996

case 2

in: [1,1]

expected: 0

case 3

in: [-2,3]

expected: 5

case 4

in: [0,0]

expected: 0

Starter codePython

def dpcm_step(prediction, x):
    # Your code here
    pass

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