class Solution:
def fib(self, n: int) -> int:
a, b = 0, 1
for _ in range(n):
a, b = b, a + b
return a
509. Fibonacci Number - LeetCode
· One min read
class Solution:
def fib(self, n: int) -> int:
a, b = 0, 1
for _ in range(n):
a, b = b, a + b
return a