擅长:python、mysql、java
<p>使用Python可以通过以下方式获得结果:</p>
<pre><code>In [25]: start = [1,2,3,4,5,6,7,8]
In [26]: tuples = [item for item in zip(start[::2], start[1::2])]
In [27]: tuples
Out[27]: [(1, 2), (3, 4), (5, 6), (7, 8)]
In [28]: answer = sum(rhs-lhs for (lhs, rhs) in tuples)
In [29]: answer
Out[29]: 4
</code></pre>