擅长:python、mysql、java
<p>您可以将先前的斜率添加到<a href="http://docs.python.org/2/library/stdtypes.html#set-types-set-frozenset" rel="nofollow">set</a>中,并在内部循环中观察添加后的长度:</p>
<pre><code>slope = set()
slope.add(previous_slope)
old_length = len(slope)
for first_loop:
slope.add(current_slope)
if len(slope) > old_length:
print 'Changed!'
break
</code></pre>
<p>对每个内循环重复此模式。在</p>