Fib

fib.js

// using iteration
const fib = (number) => {
  const results = [0, 1]
  for (let i = 0; i <= number - 2; i++){
    results[i+2] = results[i+1] + results[i];
  }
  
  return results[number];
}


// using recursion (be aware of stack overflow :neckbeard:)
const fib = (number) => {
  if (number<2) return number
  
  return fib(number - 2) + fib(number - 1);
}