Code Signal_练习题_alternatingSums

转载于 2018-07-23 23:17:00 发布 · 200 阅读

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原文链接：http://www.cnblogs.com/BlameKidd/p/9357538.html

本文介绍如何使用Python解决数组元素交替求和的问题，并对比了两种不同的解决方案，包括作者的实现方式和官方推荐的简洁代码。通过实例分析，帮助读者理解如何优化代码并提高编程效率。

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Several people are standing in a row and need to be divided into two teams. The first person goes into team 1, the second goes into team 2, the third goes into team 1 again, the fourth into team 2, and so on.

You are given an array of positive integers - the weights of the people. Return an array of two integers, where the first element is the total weight of team 1, and the second element is the total weight of team 2after the division is complete.

Example

For a = [50, 60, 60, 45, 70], the output should be
alternatingSums(a) = [180, 105].

我的解答：

def alternatingSums(a):
    sum1 = sum2 = 0
    for i in a[0::2]:
        sum1 = sum1 + i
    for j in a[1::2]:
        sum2 = sum2 + j
    return sum1,sum2

膜拜大佬：

def alternatingSums(a):
    return sum(a[::2]),sum(a[1::2])

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转载于:https://www.cnblogs.com/BlameKidd/p/9357538.html