Rosetta Code

Fibonacci word

Build the opening Fibonacci words by concatenating the two previous terms.

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Sourcerosettacode/popular/fibonacci_word.vibe
def fibonacci_words(count: int) -> array<string>
  words: array<string> = []
  previous = "1"
  current = "0"
  index = 0

  while index < count
    words.push(current)
    next_word = current + previous
    previous = current
    current = next_word
    index = index + 1
  end

  words
end

def run -> { final_length: int, words: array<string> }
  words = fibonacci_words(8)
  {
    words: words,
    final_length: words.fetch(words.length - 1).length
  }
end

Output

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