擅长:python、mysql、java
<p>检查<a href="http://book.pythontips.com/en/latest/map_filter.html#filter" rel="nofollow noreferrer">this</a></p>
<pre><code>>>> matrix = [
... [[0], "whatever0"],
... [[1], "whatever1"],
... [[1, 1], "whatever11"],
... [[1, 2], "whatever12"],
... [[1, 3], "whatever13"],
... [[1, 4], "whatever14"]
... ]
res=list(filter(lambda x: x[0][0]>0, matrix))[-1]
</code></pre>
<p>res包含每个矩阵项的第一项的最后一个元素(粗体)</p>
<p>。。。[[0],“whatever0”]</p>
<p>。。。[[<strong>1</strong>],“whatever1”]</p>
<p>。。。[[<strong>1</strong>,1],“whatever11”]</p>
<p>。。。[[<strong>1</strong>,2]**,“whatever12”]</p>
<p>。。。[[<strong>1</strong>,3]**,“whatever13”]</p>
<p>。。。[[<strong>1</strong>,4]**,“whatever14”]</p>