Fibonacci

fibonacci.js

// get the fib number:
function fib(n) {
  let arr = [0,1,1];
  
  for (let i = 3; i <= n; i++) {
    arr.push(arr[i-2] + arr[i-1])
  }
 return arr[n]
}


// get first 30 numbers:
for (let i=0; i<30; i++) {
  console.warn(fib(i));
}


//////////
function fibonacci(num) {
  if (num <= 1) return 1;

  return fibonacci(num - 1) + fibonacci(num - 2);
}