Square(n)Sum

Complete the square sum function so that it squares each number passed into it and then sums the results together.
完成平方和函数，对每个传入其中的数字平方并相加。

def square_sum(numbers):
    sums=0
    for i in numbers:
        sums+=i*i
    return sums

def square_sum(numbers):
    result=[]
    for sqr in numbers:
        result.append(sqr**2)
    return sum(result)

def square_sum(numbers):
    return sum([x**2 for x in numbers])

def square_sum(numbers):
    return sum(x**2 for x in numbers)

import numpy
def square_sum(numbers):
    return sum(numpy.array(numbers)**2)

def square_sum(numbers):
    return sum(map(lambda x:x**2,numbers))

sum(iterable[,start])
对序列中的每个元素求和
返回数值

• iterable--列表、元组、集合
• start--指定相加的参数

map(function,iterable,...)
iterable中的每个元素调用function
返回iterable

• function--函数
• iterable--一个或多个序列