how to make program of Fibonacci series?

Answer 1

public static int fibonacci_rec(int i, int curr, int prev) {
if (i == 0) {return prev;}
if (i == 1) {return curr;}
return fibonacci_rec(i-1, curr+prev, curr);
}
public static int fibonacci(int i) {
return fibonacci_rec(i, 1, 0);
}

Answer 2

My try:

https://code.sololearn.com/cRdvpVrWwP57/?ref=app

Answer 3

Python 3 -

x,y,z=0,1,0
i = 400000000
while y < i:
z = x + y
x = y
y = z
print(y)