编程实现：a[0]*b[0] + a[1]*b[1] +...+a[i]*b[j]
>>> a=[1,2,3,4,5]
>>> b=[6,7,8,9,0]
>>> from functools import reduce
>>> from operator import add,mul
>>> reduce(add,map(mul,a,b))
80
>>> filter(lambda x:x>2,a)
[3, 4, 5]
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编程实现：a[0]*b[0] + a[1]*b[1] +...+a[i]*b[j]
>>> a=[1,2,3,4,5]
>>> b=[6,7,8,9,0]
>>> from functools import reduce
>>> from operator import add,mul
>>> reduce(add,map(mul,a,b))
80
>>> filter(lambda x:x>2,a)
[3, 4, 5]
相关文章：