fibonachi

# 1 1 2 3 5 8 13 21 44
import sys
import time

sys.setrecursionlimit(9999999)

def fibonachi(n):
    last1 = 1
    last2 = 1
    cur = 0
    for i in range(1, n+1):
        if i == 1:
            cur = 1
        elif i == 2:
            cur = 1
        else:
            cur = last1 + last2
            last1 = last2
            last2 = cur
    return cur

t1 = time.monotonic()
for n in range(0, 35):
    res = fibonachi(n)
    #print(res)
t2 = time.monotonic()
print('indus style: %.6f' % (t2-t1))

def fibonachi_rec(n):
    if n <= 0: return 0
    elif n == 1 or n == 2:
        return 1
    else:
        return fibonachi_rec(n-1) + fibonachi_rec(n-2)

t1 = time.monotonic()
for n in range(0, 35):
    res = fibonachi_rec(n)
t2 = time.monotonic()
print('recursion style: %.6f' % (t2-t1))