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  • level3-lesson14-diy2
  • diy2.py
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  • BellCodeEditor's avatar
    save project · c8a69b07
    BellCodeEditor committed 2 years ago
    c8a69b07
diy2.py 394 Bytes
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# 尝试编写func()函数输出斐波那契数列的第十五个数是什么?
# 斐波那契数列:1,1,2,3,5,8,13,21,34,55……
import time
start_time=time.time()
def func(n):
    if n<=2:
        return 1
    else:
        a=func(n-1)+func(n-2)
        return a










print(func(39)) #调用函数并打印结果
end_time=time.time()
p=end_time-start_time
print(p)