擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/2/library/collections.html#collections.Counter" rel="nofollow">collections.Counter</a>,它是为此而构建的:</p>
<pre><code>from collections import Counter
mylist = [1,2,3,4,5,5,6,7,7,7,8,9]
for value, repeats in Counter(mylist).items():
if repeats > 1:
print("Value {} repeats {} times".format(value, repeats)
</code></pre>