1、[1,1,2,3,5,8,13......]
递归加缓存
def fibs(i, buffer): # 返回斐波那契数列第i个数
# 定义递归边界
if i in (1, 2):
buffer[i] = 1
return 1 # 上面就是递归边界
elif i in buffer:
return buffer[i]
else:
result = fibs(i-1, buffer) + fibs(i-2, buffer) # 递归表达式
buffer[i] = result
return result
if __name__ == '__main__':
for i in range(1,10):
buffer = {} # 递归加缓存
print(fibs(i, buffer))