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/*
Description:
We want an array, but not just any old array, an array with contents!
Write a function that produces an array with the numbers 0 to N-1 in it.
For example, the following code will result in an array containing the numbers 0 to 4:
arr(5) // => [0,1,2,3,4]
*/
const arr = n => Array.from({length: n}, (_, i) => i);
