Kata

Create a function, that accepts an arbitrary number of arrays and returns a single array generated by alternately appending elements from the passed in arguments. If one of them is shorter than the others, the result should be padded with empty elements.

Examples:

Kata.interleave([1, 2, 3], ["c", "d", "e"]) == [1, "c", 2, "d", 3, "e"]
Kata.interleave([1, 2, 3], [4, 5]) == [1, 4, 2, 5, 3, null]
Kata.interleave([1, 2, 3], [4, 5, 6], [7, 8, 9]) == [1, 4, 7, 2, 5, 8, 3, 6, 9]
Kata.interleave([]) == []

interleave([1, 2, 3], ["c", "d", "e"]) === [1, "c", 2, "d", 3, "e"]
interleave([1, 2, 3], [4, 5]) === [1, 4, 2, 5, 3, null]
interleave([1, 2, 3], [4, 5, 6], [7, 8, 9]) === [1, 4, 7, 2, 5, 8, 3, 6, 9]
interleave([]) === []

interleave([1, 2, 3], ["c", "d", "e"]) == [1, "c", 2, "d", 3, "e"]
interleave([1, 2, 3], [4, 5]) == [1, 4, 2, 5, 3, None]
interleave([1, 2, 3], [4, 5, 6], [7, 8, 9]) == [1, 4, 7, 2, 5, 8, 3, 6, 9]
interleave([]) == []

interleave([1, 2, 3], ["c", "d", "e"]) == [1, "c", 2, "d", 3, "e"]
interleave([1, 2, 3], [4, 5]) == [1, 4, 2, 5, 3, nil]
interleave([1, 2, 3], [4, 5, 6], [7, 8, 9]) == [1, 4, 7, 2, 5, 8, 3, 6, 9]
interleave([]) == []