Here's my cheating version that uses a third-party library: add1_cheating = (arr, val, n) -> n = arr.length if n is 0 start = if n < 0 then arr

Here's my cheating version that uses a third-party library: add1_cheating = (arr, val, n) -> n = arr.length if n is 0 start = if n < 0 then arr.length else 0 end = if n < 0 then 0 else arr.length step = n/(Math.abs n) n = Math.abs n count = 0 for i in _.range start, end, step break if count > n arr[i]++ if arr[i] is val count++ return arr