ScriptdrillRange of numbers
A JavaScript exercise from Scriptdrill. Solve it with a code editor in your browser that runs your function against example and hidden tests, and it is checked the moment you submit.
The task
Return the numbers from `start` up to, but not including, `end`, counting by `step`. A negative `step` counts down (then `end` is below `start`). If the step never reaches `end`, or `step` is 0, return an empty array.
What this exercise teaches
The loop condition flips with the direction of step, so the same code counts up and down, and a range that points the wrong way stops immediately. The early return for a step of 0 prevents an infinite loop.
A hint if you get stuck
Use a loop whose condition depends on the sign of `step`: `x < end` going up, `x > end` going down. Return early when `step === 0`, or the loop never ends.
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