计算机基础

动态规划 ≈ 分治法 + memo

def memo(func):
    cache = {}
    def wrap(*args):
        if args not in cache:
            cache[args] = func(*args)
        return cache[args]
    return wrap


@memo    # 注释掉这个装饰器
def fib(i):
    if i < 2:
        return 1
    return fib(i-1) + fib(i-2)

print(fib(55))

cache = {}
def memo(func):
    
    def wrap(*args):
        if args not in cache:
            cache[args] = func(*args)
        return cache[args]
    return wrap


@memo
def fib(i):
    if i < 2:
        return 1
    return fib(i-1) + fib(i-2)

print(fib(55))
print(cache)

另外，关于*args当参数传函数为unpack

def foo(*args):
    print(args)

args = (1,2,34,)

foo(*args)
foo(args)