Implement the function generateRange which takes three arguments (start, stop, step) and returns the range of
integers from start to stop (inclusive) in increments of step.
(1, 10, 1) -> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
(-10, 1, 1) -> [-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1]
(1, 15, 20) -> [1]
- start < stop
- step > 0
def generate_range(min, max, step)
min.step(max, step).to_a
enddef generate_range(min, max, step)
(min..max).step(step).to_a
end