fibonacci series

# Easy fibonacci exercise
# Method #1
def fibonacci(n):
    # 1th: 0
    # 2th: 1
    # 3th: 1 ...
    if n == 1:
        return 0
    elif n == 2:
        return 1
    else:
        return fibonacci(n - 1) + fibonacci(n - 2)

# Method #2
def fibonacci2(n):
    if n == 0: return 0
    n1 = 1
    n2 = 1
    # (1, n - 2) because start by 1, 2, 3... not 0, 1, 1, 2, 3....
    for i in range(1, n - 2):
        n1 += n2
        n2 = n1 - n2
    return n1


print(fibonacci(13))
# return the nth element in the fibonacci sequence

View another examples Add Own solution

Remort 95 points

                                    //to find nth fibonacci number(recursive solution)
class Solution {
    public int fib(int n) {
     if(n==0){
         return 0;
     }
        if(n==1){
            return 1;
        }
        if(n==2){
            return 1;
        }
        return fib(n-1)+fib(n-2);
    }
}

Thank you! 1

4.67

Nataly Vinogradova 125 points

                                    class Solution {
    public int fib(int n) {
     if(n==0){
         return 0;
     }
        if(n==1){
            return 1;
        }
        if(n==2){
            return 1;
        }
        return fib(n-1)+fib(n-2);
    }
}

Thank you! 6

4.67 (6 Votes)

Hotfix 80 points

                                    // FIBONACCI SERIES
// 0 1 1 2 3 5 8 13 

let number = 7;
// let a=0,b =1,next;
let a=-1,b=1,next;

for(let i=1;i&lt;=number;i++){
  next= a + b;
  a = b;
  b = next
  console.log(next)
}

Thank you! 6

4 (6 Votes)

Ottenalm 170 points

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

Thank you! 1

5 (1 Votes)

4.11

Supermeerkat 120 points

                                    //basic fibonacci series
0, 1, 1, 2, 3, 5, 8, 13, 21, ...

Thank you! 9

4.11 (9 Votes)

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