擅长:python、mysql、java
<p>您可以使用以下函数:</p>
<pre><code> In [178]: def swap_index_values(my_string):
...: l = list(my_string)
...: middleIndex = (len(l) - 1)/2
...: middle_val = l[middleIndex]
...: l[middleIndex] = l[-1]
...: l[-1] = middle_val
...: return ''.join(l)
...:
In [179]:
In [179]: a
Out[179]: '012345678912345'
In [180]: swap_index_values(a)
Out[180]: '012345658912347'
</code></pre>
<p>在上面,您可以看到中间值和最后一个值已经交换。你知道吗</p>