Javascript: How do I prevent my Fibonacci generator from producing two "1"?

July 17, 2023

let sayi3 = 0, sayi4 = 1, nextTerm;
let number = 10;

console.log("Girdiğiniz sayının sırasına kadar olan Fibonacci değerleri:");

for (let i = 1; i <= number; i++) {
    console.log(sayi3);
    nextTerm = sayi3 + sayi4;
    sayi3 = sayi4;
    sayi4 = nextTerm;
}

This is the output:

output

There is nothing wrong with my code, I just want to know how can I stop it from generating two 1’s. Can you tell me the solution if possible?

I’ve searched forums and stackoverflow but no results

>Solution :

This is Fibonacci sequence:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144 ...

If you want only one 1, that’s not called Fibonacci sequence anymore, however, you can do it this way:

let sayi3 = 1;
let sayi4 = 2;
let nextTerm;
let number = 10;
  console.log(0)
for (let i = 2; i <= number; i++) {
    console.log(sayi3);
    nextTerm = sayi3 + sayi4;
    sayi3 = sayi4;
    sayi4 = nextTerm;}