Fibonacci Number

by arunoda

Babel + JSX

let ops = 0

function Fib(n) {
	if (n < 2) return n
  
  let n2 = 0
  let n1 = 1
  for (let i = 2; i < n; i++) {
	  ops ++
  	const total = n1 + n2;
    n2 = n1
    n1 = total
  }
  
  return n1 + n2
}

console.log(Fib(4), ops);