2017.11.25(python)

2017-11-25  本文已影响5人  流星雨的梦

金融

python

def sum(n):
    if type(n) != type([]) and type(n) != type(()):
       return None
    if len(n) == 0:
        return None
    sum = 0
    for i in range(0,len(n)):
        sum = sum+n[i]
    return sum
n=(1,2,4)
sum(n) 
def max(n):
    if type(n) != type([]) and type(n) != type(()):
       return None
    if len(n) == 0:
        return None
    for i in range(0,len(n)):
        for j in range(i+1,len(n)):
            a=n[i]
            b=n[j]
            if a<b:
               n[i]=n[j]
               n[j]=a
    return n[0]
n=[1,2,3]
max(n)
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