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Please use markdown tags to format your code or it is very discomfortable to read: how-to-format-code-in-markdown.

Not a kata issue. Use Question label next time.

returns the first n elements - signature included of the so seeded sequence.

How many elements are you returning there?

You shouldn't change the order of the strings in the array, it's been discussed many times already (some post are hidden, but some are still visible).

Don't mutate the array you're going through, that way you skip values.