How far off is it?

Problem

A suitcase is only accepted if it weighs between low and high kilos, both ends included. Write a function that returns how far the weight is outside that range: 25 in a range of 10 to 20 gives you 5, and 7 gives you 3. If the weight is inside you return 0, and sitting right on one of the ends counts as inside. What you return is never negative.

Examples

• Over the top

  25, 10, 20 → 5

• Under the bottom

  7, 10, 20 → 3

• Inside the range

  15, 10, 20 → 0

Besides these, the challenge has hidden tests that are revealed when you submit your solution.

You start with this

def off_by(value, low, high):
    pass

function offBy(value, low, high) {
}